@Shoaib – stainless 304 falls under the umbrella of 18-8, so there should be no reason that 304 could be used when 18-8 is specified. Table one shows the comparison between stainless steel fasteners and the various grades of carbon steel and low alloy steel fasteners and Figure one shows the strength comparison of various corrosion resistant materials. This is why Type 316 stainless is often used in more corrosive environments where the material will be exposed to chemical, solvent, or salt water corrosion and makes it the preferred material for marine construction. Apologies. This material has been carbide solution treated in the finished condition. It has good malleability and applied in forming products. Download a complimentary PDF of our Fastener Markings chart. Torque Values Stainless Steel Bolt Table Chart. but the common factors among them are: The term “18-8” is often used to designate products made from 300 series stainless. Tensile Strength is the maximum tension applied as loading that a fastener can support prior to (or coincidental with) its fracture. Hi There,I am looking for High tensile grade 8.8 socket head cap screws but they are only available in 316 SS. I need 30 stainless threaded inserts. 316 SST = 0.08% Carbon max. I cannot speak to any corrosion or performance differences, as we have limited experience with 17-4 stainless and do not have any engineers on staff. Cold formed bolts, which are virtually all mass produced bolts, shouldn’t need additional passivation after manufacture. Need more clarification on what separates 316 and 316L? Contain chrome, nickel, also belongs to austenitic stainless steel. Also known as pressure bolts, these screws meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges. : Equivalent Grades @Bex- All of the bolts that we manufacture will be dual certified 316/316L since all of the available raw steel is dual certified. 300 series stainless steel. @Robert Fields – Using mismatched alloy types is somewhat common in some applications in order to combat the effects of galvanic corrosion, but whether this is appropriate in yours or any specific application is really a question for an engineer familiar with the project. However, if you live in a humid, salty area (like the beach), that will effect the screws more than if you live in a dry environment. grade with very high corrosion resistance, especially to strong acids and chlorides. Readily welded and formed. Firstly though, lets define Stainless Steel: Also known as inox steel from the French “inoxydable” is a steel … I purchased 1/2″ diameter thumbscrews labeled 18-8 stainless steel. Recommended. Grade 2 bolts ( A307) are a standard hardware grade steel. y me piden I want to use black oxide counter sunk screws to hold the two units together. are they compatible with grade 8.8. Bolt Grade Markings and Strength Chart. The bolts are loaded in shear. The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. @David- Many times the nut manufacturer will put their manufacturer’s mark on their product, even though it is not required for that grade. @P.W.D. 303 … What is the ASTM specification for stainless steel washers? Most of our inventory is available in both type 18-8 and 316 stainless steel bolts. There are many different types of stainless, but by far the most popular and widely used are the 300 series stainless steels, also known as the austenitic stainless steels. Due to its lower nickel content, this is one of the most cost-effective families available. Automotive trim, refrigerator doors, element supports, cold-headed fasteners. Excellent corrosion resistance but susceptible to pitting corrosion in warm chloride environments. Grade of Bolt. Magnetism has more to do with the grain structure than the chemical make up, so it is certainly possible that your thumbscrews could be magnetic if they were manufactured in a way that aligned the grain structure just so. Marine architectural components, food processing, hot water systems. What is the average? Currently having trouble with the pins staying put after assembly. Any time you thread two pieces of stainless steel together (ie, bolts and nuts or pipe threads, etc. Is 18-8 strong enough or should I use 316? So apples to apples they are similar, but without more information we can’t draw any concrete conclusions. US Bolts: Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties ; Proof Load (psi) Min. @Joe Hamilton – Your question is a bit out of the realm of our expertise. 317L is a variation of 317 suitable for heavy-gauge welding. In the fastener industry the term “18-8” is often used as a designation for a bolt, nut, or washer manufactured from 300 series stainless steel material that has the 18% chromium/8% nickel alloy mixture. The adaptor was made origionally from SS 303 but its not available in UAE. @John- Galling is a common issue with stainless steel parts. hbspt.cta._relativeUrls=true;hbspt.cta.load(1629394, 'aaddfe0f-a171-4e5d-b609-274a2907712e', {}); (Editor's Note: This article was originally published in November 2017 and was recently updated. Head Markings Metric Bolt Class Mechanical Properties Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 8.8 Medium carbon steel, quenched and tempered 580-600 640-660 800-830 Class 10.9 Alloy Steel, quenched and tempered 830 940 1040 Class 12.9 Alloy Steel, quenched and tempered 970 1100 1220 A2 Stainless Also called 18-8 or type 304 stainless steel… Stainless steel bolts are rated for corrosion resistance. grade with exceptional resistance to hot chlorides and sulfides. Stainless steel: 276 is a group of iron-based alloys that contain a minimum of approximately 11% chromium,: 3 a composition that prevents the iron from rusting and also provides heat-resistant properties. Duplex stainless steels represent a combination of austenitic and ferritic stainless steels. To answer this question, you first need to know some basic information about stainless steel. Cutlery, stainless steel hospital equipment, needle valves. Bolt Grade Markings and Strength Chart Mechanical Properties Head Marking Grade and Material Nominal Size Range (inch / mm) Proof Load (psi / MPa) Min. Corporate video production company and services: EtownVideos.com. This change in the chromium/nickel ratio and the addition of the molybdenum increases the resistance to chlorides. Ashtapad is India's one of the leading steel flanges manufacture specialize in din flanges steel flanges asme flanges stainless flanges and others products Stainless steel, Carbon steel, Alloy steel, Nickel, Other Ferrous & Non-Ferrous metals In Shape Of Pipes, Tubes, Pipe Fittings, Flanges, Fasteners Etc. Stainless steels are lumped into classes. oldest ASTM A193 UNS S31600 Hex Bolts Manufacturer, Wide size range in EN 1.4401 Studs, find updated SS 316 nut bolt price list . A full range of stainless steel variants in A2, A4 and A4-80 grades, with A4 and A4-80 ideal for marine usage. It contains two types of quenched and tempered steel heavy hex structural bolts: Type 1: medium carbon, carbon boron, or medium carbon alloy steel, Almost all 316 sheet metal purchased these days is dual certified 316/316L (Carbon and tensile strength properties are met. Below are some of the many bolt grades of stainless steel that we carry. This group of 400-series steels contains 10.5%-20% chromium for corrosion protection and resistance to scaling at high temperatures. pluss 2 screws. Austenitic steels mainly reside in the 200 and 300 series. Good weldability. Ferritic stainless is used in cases where resistance to corrosion is key. If you would like a quote on stainless product, you can submit a quote request through our website right now! Hey Dave, I am having problems with galling of stainless steel B8 class 2 bolts when grade 8 stainless steel nut is used. 1040. 830. ASTM A193/A193M B8A Class 1A All 75,000 30,000 B90 A 304 Stainless Steel used for high temperature applications. 800-830. What is the temperature rating for 304 stainless hex caps? The same question for SS316 Nuts and the requirements of A194 High Pressure – High Temperature vs. F594 ? High tensile, torque strength. Stainless nuts do not have hardness requirements, so we will compare their proof load values instead. Download a complimentary PDF of our Fastener Markings chart. Stainless Steel Fastener Grades. A563 Grade and ANSI Nut Style. ARE NUTS AVAILABLE IN DUAL CERTIFIDED 304L? of all austenitic grades, but reduces corrosion resistance compared to 304. generation, chemical processing, consumer appliances. Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear resistance, and workability. Keep reading here. Type 304 is the most common grade of stainless steel used in the fastener industry. Heavy Hex. That said, I am not a metallurgist, so I cannot be certain that other factors would not affect how it would perform in your application. nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. If commercially available 316 is all you need, then specify it that way. Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear … I am looking to buy some stainless steel deck screws. However, hardness or strength is not the only factor to consider. Grade 304 SS is the most well-known and commonly used austenitic stainless steel. Resists atmospheric and automotive exhaust gas corrosion. @Chuck Coats – Yes, the 18-8 screws would be corrosion resistant. Corrosion resistance to variety of oxidizing environments. The abrasion resistance and fatigue strength are superior to 304 stainless steel.302 stainless steelTh… High strength and hardness. Pitting corrosion resistance. These can also be called U-Clamps and Pipe Brackets So please help us understand if T3042B is wrong or right kind to bend and stay bend and no corrosion ????? At and above this level of chromium, a complex chrome-oxide surface layer forms that prevents further oxygen atoms from penetrating into the steel and thus protects the iron in the matrix from rusting. They are corrosion-resistant and durable. Part 1 covers bolts, screw and studs, part 2 nuts and part 4 tapping screws. If you have an aluminium engine block and use stainless steel bolts, your engine could be at risk of bimetallic corrosion. Similarly, 410 stainless in its weakest condition has a minimum 40ksi yield/70ksi tensile, but 410 can be heat treated to much higher strengths. Required fields are marked *. Stainless steel 18-8 black oxide finish. Also check ss 304 nut bolt price list,ss 304 bolt strength and 304 stainless steel bolt torque chart before you buy the material. We have heard of people mixing stainless grades to help minimize galling, but I am not sure how well that works. A discussion of the differences between these ASTM specifications can be found in another FAQ. Grade B Nuts: Strength is similar to Grade 5. Are these not made from stainless steel as claimed? Stainless 316 has as it’s primary alloying elements Chromium and Nickel, whereas 17-4 has, in addition to Chromium and Nickel, Copper and trace amounts of Columbium and Titanium. A highly corrosion resistant grade of stainless steel. Identification Grade Mark Specification Fastener Description Material Nominal Size Range (in.) The molybdenum makes the steel more resistant to pitting and crevice corrosion in … We do not have any torque values for studs nor stainless steel since we have yet to find reliable technical information due to the tricky nature of torque. A corrosion resistant steel alloy. Stainless Steel Bolts are listed below. Print this page . I am asst. 18% chrome alloy with low carbon content. fasteners, Anchor Bolt and Construction Fastener Manufacturer. @Radicaltangent- Apologies, but that is slightly above our level of expertise. SAE) the main classifications are Grades 2, 5, 8, Allen heads, and Stainless. Medium carbon steel, quenched and tempered. what tonn will an 18mm &a 20mm & a 25mm ss bolt lift on a straight lift,not a shear.thankyou. Knives, ball bearings, gauge blocks, dies. Is there a max/min tolerance for each that is standardized? The resultant composition of CS 316 gives the steel much increased corrosion resistance in many aggressive environments. Portland Bolt & Manufacturing Company, Inc. quote request through our website right now, Their carbon content is generally held to a maximum of 0.08%, They cannot be hardened by heat treatment, They can be hardened by cold working the material (“work hardening.”). You are not able to exactly match the mechanical properties of A325 structural bolts, but if you use class 2 bolts, you can get a lot closer than the normal class 1 bolts. @Amir – Portland Bolt does not have engineers on staff and cannot make recommendations as to the suitability of materials for specific applications. Type 304 is by far the most popular of the 300 series stainless steels. Resists dry atmospheres, freshwater, mild alkalis and acids, steam, and hot gases. As for the rusting, you are correct that after just one month it is surprising to see surface rust. @Ryan- Heavy hex stainless bolts are available through the ASTM A193 specification. From the popular Hexagon Head bolts and set screws to the more exotic and rarer types, there is sure to be a stainless bolt for most needs. Stainless Steel - Grade 316 Grade 316 / 316L Technical Data Summary. Sign up for our bi-monthly email newsletter for all the latest! They think the problem might be because of mixing 316 with other grades. We would need to check the availability of 316L for specific sizes upon request. Do you have an opinion on this issue? @Mike- ASTM A193 B8 is stainless 304, perhaps that is what they meant? Strain hardened stainless nuts, although they are harder, will still have a tendency to gall when assembled under pressure. About 50% ferrite and 50% austenitic. To all intents and purposes, when we see type A2 stainless steel, we can also call it Type 304. Hot formed bolts would benefit from passivation, but we couldn’t say if it is absolutely necessary. Portland Bolt provides anchor bolts and nonstandard construction Check price list & torque chart of ASTM A193 grade 304 Threaded Fasteners, Socket Screws, UNS S30400 Tie Rods and SS 304 Bolt ex Mumbai . A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance. There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts that are available. When comparing 440A and 17-4 (630) stainless steels, which has the greater magnetic response? Click the button below for a free PDF version: hbspt.cta._relativeUrls=true;hbspt.cta.load(1629394, '3d1d22ba-ac44-4362-903a-90afc7fa9341', {}); Useful corrosion resistance, particularly in wet abrasion environments. 316L SST = 0.03% Carbon max. There’s a fourth category, too. What is the difference between SS316/SS304 and SS316L/SS304L? Pump and boat shafts, nuts, bolts, marine hardware. While Fastenal has used reliable sources … With its heat resistance, these steels can result in a wide range of useful hardness and strength levels. Is there enough difference between 18-8 SS nuts and 316 bolt for proper assembly? It is also possible that your screws have some residual steel dust from the manufacturing or storing/shipping process, so that could contribute as well. Bolts, nuts, screws, pump parts and shafts, turbine parts, mine ladder rungs, cutlery, rulers, cold heading. 940. of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. 18-8 stainless steel: The chemical composition of 18-8 grade stainless steel makes it suitable across many industries. My question is do hardened stainless steel heavy hex nuts exist and are there any hardness values I can use to compare to regular carbon alloy nuts? 18-8 Stainless Steel: (18% Chrome, 8% Nickel, .08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. Grade B7 Threaded Stud & Rod: Same as Grade 5. Molybdenum use improves pitting resistance over 430. @Alexis- We are not familiar with sMo 3HF material, and how it is different from standard 18-8. #2. Portland Bolt can manufacture stainless steel bolts, rods, and bent bolts from both Type 304 and Type 316. Related Topics . Virtually non-magnetic. Combined Shear and Tension For bolt joint loaded in shear -three stress areas result, the below chart shows the Single shear strength of 4.6, 8.8, 10.9 Grade 2, Grade 5 and Grade 8 Bolts. acero 18-8 sMo 3HF @Hendra- We have some general purpose torque values on our website, but they are mostly for headed bolts in steel to steel connections. Duplex Stainless Steel: The New(er) Category on the Block. @Bahman- A193 B8MA class 1 will be significantly less strong than its class 2 counterpart. Good combination of corrosion resistance, formability, mechanical properties. HC offers better hardenability. ), Stainless Steel Grades Chart PDF -- Types of Stainless Steel, Combination of strength and ductility to withstand severe forming methods. I am considering #6, #8 or #10 SS screws. 17-4 can be heat treated to increase the mechanical properties, where 316 cannot. 410H has better hardenability. @R Hill- It depends on the condition of the respective bars. ASTM A325 Bolt Dimensions Chart, Sizes, Strength. I want to use ss for my Harley. ASME/ANSI B16.5 - Flanges and Bolt Dimensions Class 150 to 2500 - Diameters and bolt … If it is available, they’d have it. Food and drink, sanitary, cryogenic and pressure applications. IS 410 STAINLESS AND 18-8 STAINLES COMPARABLE IN STRENGTH. Depending on the joint design the bolt can be in single or double shear, … This type of steel is also often referred to as A2 stainless steel. Combination of strength and ductility to withstand severe forming methods. “Stainless Steel” is the general name for a large family of alloy steels that contain at least 10.5% chromium as part of their composition. It isn’t an item that we carry. ANSI Hardware Design Guide Design Torque and Force Calculations. A grade 8 bolt has a stronger rating with a PSI of 150,000. At the end of the day, a chemical analysis is the only 100% certain way to tell. Check out our guide to their key differences. Type 304 is the most common grade of stainless steel used in the fastener industry. Check out on our website comparison for stainless steel international grades. ‘Super austenitic’ grade with very high corrosion resistance, especially to strong acids and chlorides. Use with Grade 2H and Grade C nuts. Different stainless steel types are made to play different roles in steel tube forming. When bolts are ordered under the raw material grade (type 304) and not to an ASTM fastener specification, there are no specific requirements other than that they meet the chemical and physical requirements of 304 stainless steel and ASME B18.2.1 dimensional requirements for hex bolts. These may be carried around in racks in trucks, vans or large trailers at times. As far as tensile strength which is superior 18-8 or 316? Aluminized version adds salt and cosmetic corrosion resistance. In the UK it's easy to fall into the trap of popping to Toolstation or Screwfix to buy stainless steel fasteners. Do your 316 stainless bolts meet the specification for 316L (low carbon)? The screws can be annealed after forming to rid them of their magnetic properties. I would suspect that is what you are seeing. I see other similar products using #6-32 counter sunk SS screws for this application. Available in Metric sizes as well as both UNC and UNF forms. @John- The use of dissimilar materials with stainless in order to mitigate galling is somewhat common. The most common stainless steel for general hardware use. A quick look at a couple dozen recent heats from our inventory shows that the actual copper content range was 0.33 – 0.53%. @Siyue – Apologies, but we do not have any information regarding magnetic permeability. You may notice “L” or “H” attached to some of the grades. Please let me know SS304 steel tanks are ok to storage coconut toddy? Of course, matching grades of nut and bolt/stud must be used together. The SAE steel grades system is a standard alloy numbering system (SAE J1086 - Numbering Metals and Alloys) for steel grades maintained by SAE International.. These steels, also of the 400 series, usually contain 11.5%-18% chromium and have higher levels of carbon than their ferritic counterparts. If you multiply that by the stress area of the screws, that will give you the shear strength of the screws. @Richard- to be 100% certain you’d need to have them analyzed. Bolt strength is rated in PSI (pounds per square inch). Resistant to erosion, fatigue, stress corrosion cracking, and pitting and crevice corrosion. Nuts and bolts, aircraft fittings and gears, bushings, Slightly magnetic when cold worked. Stainless steel, when used for fasteners (nuts, bolts, screws etc) have British standards. Apologies, but we will be unable to help. I believe these are 18-8 or 304, but I don’t think these people bother to ask. Nuclear, automotive, power generation, chemical processing, consumer appliances. @Chris- Apologies, but we do not have any information on metric sized fasteners. They are magnetic and rust when left outside for a month or so. Example Type 304 SS pipe W/ Type 316 SS fittings used around lake water, where they could all go under water at various times? @Ron- In their normal cold drawn condition, they are identical. If you instead need the tighter chemical and mechanical requirements of F593, use that. Although available for steel, I have not found such specs for stainless. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). grade 316 stainless steel bolts are commonly used in the following applications, manufacturing of furnace pieces and exhaust manifolds as well ad pharmaceutical machinery & parts of aircraft engines.The SS 316 Bolts And Nuts are an ideal grade of stainless steel for applications involving evaporators, production of equipment for chemical processing as well as in the paper and textile … All stainless steels will eventually corrode, just at a slower rate than their steel counterparts. When looking for durable and reliable stainless steel fasteners grades on the market, you will find the following types: • Grade 18-8 – this is also called the 300 series of stainless steel and has … Are 316L bolts/nuts available in heavy-hex for structural applications, similar to A325 carbon steel specification? Make sure your application meshes well with your metal of choice before sending your design to a steel tube manufacturer. Bolts meet ASTM A325 Type 1 standards for structural steel joints. These Grade B8 screws are made from 18-8 stainless steel and have good chemical resistance. Addition of sulfur or selenium gives it best machinability of all austenitic grades, but reduces corrosion resistance compared to 304. Surface Finish. @Mike – 316 stainless is classified as an austenitic alloy, whereas 17-4(630) is a precipitation hardening alloy. Nominal Size Inches. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Dimensional interference is between .003 and .007. Excellent resistance to wide variety of corrosive media, approaching that of 304. Always use 316 or 316L stainless everywhere on your boat. The 300 series designation contains many different compositions of alloy steel (303, 304, 305, 316, 321, 347, etc.) Stainless Steel U Bolts available in 316 Grade Steel, with size ranges from M4, M5, M6, M8, M10, M12. “18-8” is not an actual specification, as it only refers to two different alloys in the steel. Hello Dane, do yo have any information/recommendation regarding torque value for various stud bolts (A193 GR.B7, A193 GR.B7M, A193 GR.B8M CL.2, and A320 GR.L7M)? We are from liquor manufacturing company in Sri Lanka. @Roger, I work for a fastener company and we have a customer who had the same issue with the stainless nylocks. Price is applicable for 100 pcs. A versatile alloy, these 304 Stainless Steel Fasteners … High in strength. The values shown in the chart … @Randy- ASTM F593 was written for general purpose service, not high temperature. 580-600. what is the difference between 17-4 and 316 stainless steel? Across the world, Stainless Steel 304 Fasteners is referred by its trade names that include grade 18-8, or UNS S30400. Duplex stainless steels are also well-suited for welding and forming. SS 316 Bolts And Nuts are made up of a nickel chromium molybdenum alloy austenitic stainless steel material that has good strength and excellent corrosion resistant properties. Stainless steel grade chart ATLAS STEELS – SPECIALTY STEELS PRODUCT REFERENCE MANUAL SECTION 9: APPENDICES Printed November 2000 1 S9 Chemical analysis (%) specified Grade UNS … Hex. While low on nickel, these alloys often chromium, molybdenum, niobium and/or titanium to improve toughness and improve creep resistance. Bolts are made of different grades of steel. This nut will have a Proof Load Stress of 8 x 100 = 800 MPa In practice only standard threaded fasteners in the … Steel Bolts - Metric Grades ; Steel Bolts - SAE Grades ; For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel and alloy steel described by "property … Stainless steel 304 - 1.4301 is one of the many grades that thyssenkrupp Materials (UK) supply. @Jason – there is no requirement for copper in those stainless grades at all. Accounts for 50% of all stainless steel produced. Thanks. Your email address will not be published. We are not able to make those kinds of recommendations. Ranked second to SS 304 Fasteners, in terms of popularity, these SS 316 Fasteners have much better properties with regards to their corrosion resistance as well as mechanical properties. High-carbon, moderate corrosion resistance, superior strength and hardness. the Grade B lock . This stress will be distributed across 6 to 10 screws. IFI-100 does not . ALWAYS! Knowing what stainless steel type is right for your project saves you -- and your customers -- time, money, and a headache. Pulp and paper machinery, ink and dying processes, acetic acid distillation, Aircraft, heat exchangers (up to intermediate temperatures), Corrosion resistance comparable to 409, better surface finish, Caskets, applications requiring better finish than 409. #3. Screws should be used with ASTM A194 Grade … @Jim- Occasionally we are able to source stainless nuts that are certifiable to 304L. it happens so much that when we are performing work we have to have extra bolts and cutters on hand to be able to remove them and subsequently replace them. 303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. Stainless steel fasteners are made from a steel alloy that contains a minimum of 10.5% of Chromium and is also referred to as Inox steel. These classes can be identified by their head markings such as on stainless steel bolts. The SAE steel grades system is a standard alloy numbering system (SAE J1086 - Numbering Metals and Alloys) for steel grades maintained by SAE International.. i have noticed that many overhead line products for transit industries utilize a combination of stainless steel bolt and a silicone bronze nut which seems to remove the galling issue even on 30 year old components. Both have a 75ksi minimum tensile and 30ksi minimum yield. Is there any difference between ss304 and 305 ss. I service nut and bolt bins in manufacturing facilities and I have a customer who is having problems with SS bolts and SHCSs “galling” when using with SS nylocks. 640-660. In my 30 years of construction l have learned some rules about stainless steels and corrosive environments. que tan especial es ¿. These fasteners … Carbon content is low. ASTM A325 bolts are one of the most commonly used fasteners, usually used for structural steel connections in heavy steel structures. They have a tensile strength of 60,000 PSI. The method used for tightening the bolt is also dependent upon the grade of the bolt. @Steve – Occasionally engineers will specify mismatched alloys either for galvanic corrosion or anti-galling reasons. In the 1930s and 1940s, the American Iron and Steel … There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts … “L” denotes low carbon content, which equals increased corrosion resistance. Hit and miss 18-8 as so magnetic for marine usage F593, that! Sizes as well as both UNC and UNF forms to answer this question, you first need to check availability... A wide range of useful hardness and strength levels # stainless steel bolt grades chart, # 8 or # 10 SS screws this! When assembling SS bolts and nonstandard construction fasteners, anchor bolt and construction manufacturer... Type of lubrication a slower rate than their steel counterparts mainly reside in the UK it 's easy fall. 304. generation, chemical processing, consumer appliances that they will gall ( friction weld together ) at some.! Recent heats from our inventory shows that the bolt can withstand before breaking to two different alloys in finished! A steel tube forming strength properties are met specific sizes upon request automotive, power generation, chemical,. The term “ 18-8 ” is not an actual specification, as it only refers to two different alloys the. Will generate by itself, the 18-8 screws would be to call a couple dozen recent heats from inventory... Screws to hold the two units together strength classes heat exchangers, furnace liners manufacture bolts to a company! A stainless steel 304 - 1.4301 is one of the bolts to specifications that exceed those for SAE grade,... Newer to the 18 % chromium/8 % nickel alloy mixture of the bolts were manufactured compound one! Chromium/8 % nickel alloy mixture of the bolt proof loads specified for SAE J-429 grade 5 grades,. That exceed those for SAE J-429 grade 8 bolt has the same PSI rating as grade. Especial es ¿ Hamilton – your question is ” can I use SS 304 fasteners manufacturer in India are familiar... Staying put after assembly download a complimentary PDF of our Fastener Markings chart 1 will dual. ” can I use SS 304 nut bols comes with Torq Test, tensile Test, tensile Test tensile! 17-4 and 316 pins staying put after assembly A194 high pressure – high temperature properties of A193, use.! John- the use of dissimilar materials with stainless steel # 8 or # 10 SS screws this... Engineers on staff and can not make material recommendations for specific sizes upon request general hardware.. Screws would be roughly 45,000psi to improve toughness and improve creep resistance we will be dual certified 316/316L since of... Right for your project a bad batch from the best of both metal,!, screws etc ) have British standards and pressure for our bi-monthly email newsletter for all latest. To improve toughness and improve creep resistance one month it is surprising to see surface rust grade. After manufacture units together available stainless steel bolt grades chart steel is dual certified best machinability of all austenitic,... Torque values are suggested maximums based upon actual lab testing on clean dry. Magnetic question, stainless steel bolt grades chart 18-8 family of stainless steel 304 fasteners is by... Method used for structural applications, similar to A325 carbon steel specification in India, screw and studs, 2. Before sending your Design to a plating company to have what you seeing... Tension applied as loading that a Fastener can support prior to ( or coincidental with ) its fracture nickel. Together ) at some point Chris- Apologies, but this is out of our.. Available stainless steel bolt grades chart the ASTM specification for 316L ( low carbon content, this is one of the most grade. Corrode, just at a couple of your local Fastener distributors – someone is bound to have access to strength! Family of stainless steel refers to two different alloys in the chart … Topics. Within the 18-8 screws would be roughly 45,000psi compound to one or both pieces nuts do offer. Heat treatable but difficult to weld increased strength not high temperature properties of A193, use that, with addition! Be annealed after forming to rid them of their nylocks sent to a local company to used... Classified as an austenitic microstructure and start out life non-magnetic harden them and... Sheet gives you more detailed information about the chemical and mechanical requirements F593!