A2-70 Stainless Steel Hex Head Bolt (2023)

A2-70 Stainless Steel Hex Head Bolt (1)

Manufacturer of A2 70 Bolt Material according to standard, Check A2-70 Bolt Size Chart

A2 70 Bolt is classification of high tensile bolts. Viha Steel & Forging is a leading manufacturer and supplier of the different types of bolts such as the A2 70 Hex Head Bolt. The nomenclature is based on the minimum tensile strength of the bolt. The bolts have 700Mpa minimum tensile strength and they are called the A2 70 Hex Bolt. There are other classes which correspond to their respective minimum tensile strength values.

The applications of these high tensile bolts include construction, machinery, oil and gas and many other industrial applications. The A2-70 Stainless Steel Bolt can come in various shapes, structures and dimensions. The material used for this class of steel bolts is the 304 austenitic stainless steel. The Stainless Steel Bolt Grade A2-70 is cost effective, strong, hard and general corrosion resistant as well.

The size of the bolts range from ¼ inches to 24 inches and these bolts are used in different application needs. The Stainless Steel Hex Bolt A2-70 dimensions involve different torque capacities as well. The smaller ones such as the M4 sizes have about 2.7Nm torque while the larger ones have larger torque values. The a2-70 allen bolt is a special head bolt that can take an allen key in for tightening. Please feel free to contact us for more information on the different types of SS Grade A2-70 Bolt products and the prices.

A2-70 Stainless Steel Bolts Specification

Product name A2-70 Stainless Steel Bolts
Place of Origin India
Standard ISO 4017, DIN931, GB5783, DIN, ASTM, ANSI, JIS, EN, AS
DIN Standard B.S. DIN933 DIN931 DIN934 DIN912 DIN603 DIN6923
Surface treatment
Passivation /plain
A2-70 Stainless Steel Bolts Size M2 - M100
A2-70 Stainless Steel Bolts Diameter M3-M60
A2-70 Stainless Steel Bolts Length 6mm-500mm
Head Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc
Neck type Hex, Square, Triangular, Oval & Knurled etc
Drive type Phil, Slotted, Hex socket, Torx & square slot etc
A2-70 Stainless Steel Bolts Application Windtower, Nuclearpower, Railway, Automotiveindustry, Construction, Electronicindustry
Dimensions ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded.
Drive Style Type I
A2-70 Stainless Steel Bolts Material 18-8 Stainless Steel, stainless steel ss 304/ SS316 A2/A4, SS201, SS303, SS304, SS316, SS316L, SS904L, A2-70; A4-70; A4-80
Thread Requirements ASME B1.1, UNC & UNF, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge)
Finish Per ASTM A380/A380M
Finishing Zinc Plated (Yellow, White, Blue, Black), Hop Dip Galvanized (HDG) phosphorization, Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated, Brass Plated, Tin Plated, Black Plated, Copper Plated, Gold Plated, Salt fog test
Stock Products Stainless steel: All DIN, GB Standard and part ASNI standard A2-70 Stainless Steel Bolts, Example: ISO7380, DIN7981, DIN7982, DIN916, DIN913, DIN7985, DIN912
Production technology Cold Forged
Manufacturing Process Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing
MOQ 10 pieces
Delivery time Regular product is about 7-15 days, custom product will according to special requirement
Others OEM, ODM, ±0.03MM tolerance
Surface treatment of A2-70 Stainless Steel Bolts
  • Passivation
  • Polish
  • Anodizing
  • Sand blasting
  • Electroplating (color, blue, white, black zinc, Ni, Cr, tin, copper, silver)
  • Black oxide coating
  • Heat-disposing
  • Hot-dip galvanizing
  • Rust preventive oil
Coatings Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request
Toleranceof A2-70 Stainless Steel Bolts +/-0.01mm to +/-0.05mm
Samples Yes
Production Capacity 2,700,000 pieces per month
Payment Terms T/T, Paypal, Western Union, L/C or Trade Assurance 30% deposit & balance before shipping

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(Video) Identify hex head bolts and set screws by grade of stainless steel 001.MPG

A2 70 Hex Head Bolt Suppliers, View IS 1367 Grade a2-70 allen bolt Torque Chart


A2-70 Stainless Steel Bolts Dimensions

Metric, Socket Head Cap Screws, A2-70 Stainless Steel

A2-70 Stainless Steel Hex Head Bolt (26)

A2-70 Stainless Steel Hex Head Bolt (27)

Check A2-70 Stainless Steel Bolts Dimensions full Catalog

All Sizes available in Stainless Steel Bolt Grade A2-70 with Test Certificates, check ISO 3506 Grade A2-70 Specification


A2-70 Stainless Steel Bolts Weight Chart

A2-70 Stainless Steel Hex Head Bolt DIN 933Weight


A2-70 Stainless Steel Hex Head Bolt (28)

Groups A2-70 and A4-70 with standard metric threads to DIN 13

Diameter Load1)Force at 0.2% yield point N Initial Stressing ForceN Tightening TorqueNm Force in service N
Axial Static Axial Dynamic Radial Static or Dynamic
M3 2250 1420 0.9 610 360 120
M4 3960 2490 2.2 1070 640 210
M5 6390 4030 4.3 1730 1040 350
M6 9040 5700 7.3 2440 1470 490
M8 16470 10380 17.7 4450 2670 890
M10 26100 16440 35.5 7050 4230 1410
M12 37930 23900 61.3 10240 6150 2050
M16 70650 44510 147.1 19080 11450 3820
M20 110250 69460 285.1 29770 17860 5950

1)The values correspond to 100% of the 0.2%

Designation System for Stainless Steel (ISO 3506 1979)

(Video) Good quality Stainless steel Fully Threaded Hex Bolts A2-70 suppliers

Composition Groups Austenitic Ferritic Martensitic
Identification of Steel Grades A1, A2, A4 F1 C1, C4 C3
Property Class 50 70 80 45 60 50 70 80
Soft Cold-Worked High-Strength Soft Cold-Worked Soft Hardenedand Tempered Hardenedand Tempered

Stainless Steel Properties

Extract from DIN 267 Part 11 – Chemical Compositionof austenitic chromium-nickels steels in % by weight

AusteniticGrade Material No. to AISI C Si Mn P S Cr Mo Ni
A1 303 0.12 1.0 2.0 0.20 0.15 to 0.35 17.0 to 19.0 0.6 8.0 to 10.0
A2 304 0.08 1.0 2.0 0.05 0.03 17.0 to 20.0 8.0 to 13.0
A4 316 0.08 1.0 2.0 0.05 0.03 16.0 to 18.5 2.0 to 3.0 10.0 to 14.4
  • Maximum values unless otherwise stated.
  • Types A2 and A4 may contain up to a maximum of 4% copper.

Mechanical Properties-Austenitic Grades

Bolts, Screws and Studs

Grade PropertyClass Tensile Strength Rm MPa(N/mm2) minimum Yield Stress Rp0.2 Mpa(N/mm2) minimum Elongation ALMinimum Diameter Range
A2and A4 70 700 450 0.4d =<M20
80 800 600 0.3d =<M20

Comparison: US and ISO (DIN) Stainless Steels

Tensile Load

A2 and A4 as compared to 304 and 316 Percent difference from US – Stainless Steel
up to M20 44% higher
M22 and over 6% lower
Are you looking for ss bolt a2-70 updated price list 2020-21, find here.

A2-70 Stainless Steel Bolts Price List

(Video) A2 70 Bolts Stockist In India

  • M8 full threaded DIN931 stainless steel hex head bolt a270
    Price: US $0.1-100 / Piece1 Piece (Min. Order)
  • Stainless steel welded eye bolts long type with washer and nut SUS304 A270
    Price: US $0.01 / Pieces100 Pieces (Min. Order)
  • Hexagon head bolts DIN 931(half thread) steel iso 4017 hex bolt
    Price: US $0.05-0.09 / Piece1 Piece (Min. Order)
  • Stainless steel A270 bolt head marking
    Price: US $0.001-0.8 / Piece50 Pieces (Min. Order)
  • ss304 a270 stainless steel m16 bolt diameter
    Price: US $800-1000 / Ton0.9 Tons (Min. Order)
  • M8 full threaded DIN931 stainless steel hex head bolt a270
    Price: US $0.1-100 / Piece1 Piece (Min. Order)
  • stainless steel u bolts for pipe
    Price: US $1000-2000 / Ton1 Metric Ton (Min. Order)
Do you need A2 70 Hex Bolt in specific size? Check out our inventory of A2-70 Stainless Steel Bolt

FAQs

What does A2-70 mean on a bolt? ›

Metric bolts made of 304 stainless steel are marked on the bolt head with A2-70. The A2 represents 304 stainless steel and 70 represents the tensile strength. The tensile strength equals 700 MPA general-purpose stainless steel.

Is A2-70 the same as 18 8? ›

A2 / ASTM-304 Is An 18/8 Stainless Steel : This Designates A Metallurgical Content Of 18% Chromium & 8% Nickel. A Bolt Marked A2-70 Is A 304 Stainless Steel Bolt With A 700 N/mm2 Tensile Strength (See Below Table). The -70 Representing The Tensile Strength Divided By 10.

How strong is an A2-70 bolt? ›

For example, A2-70 has a tensile strength of 700 Nmm-2 and 450 Nmm-2 proof stress.

What size is A2-70 bolt? ›

A2-70 Stainless Steel Hex Head Bolt Manufacturer and Suppliers in India
ProductA2-70 Bolts
DIN StandardDIN603 DIN931 DIN933 DIN912 DIN934 DIN6923 B.S.
DiameterM3 to M60
SizeM2 to M100
Length6mm to 500mm
6 more rows

Are A2 stainless steel bolts strong? ›

A2 grade stainless steel is also often referred to as type 304 or 18/8 - this latter label denotes the fact that A2 grade stainless steel contains approximately 8% nickel and 18% chromium. With a high hardness level and consistent dimensional stability, A2 stainless steel shows good resistance to wear & tear.

Which is stronger A2 or A4 stainless? ›

A2 vs A4 stainless steel strength

Whereas grade A4 is stronger than grade A2, and its tensile properties are almost similar to alloy steel grade 8.8.

Are stainless steel bolts stronger than Grade 8? ›

Despite the popular belief, a stainless steel bolt is actually weaker than a grade 8 bolt. In fact, according to the Society of American Engineers (SAE), grade 8 bolts are the strongest and hardest hex bolt you would want to use in constructions or the automotive industry.

What is the strongest grade of stainless steel bolt? ›

BUMAX® Ultra – the world's strongest bolt

Since its launch in 2014, the BUMAX® Ultra range has proven that it is capable of exceeding tensile strengths of between 1 500 to 1 700 MPa on various applications, with good corrosion resistance and an operating range of between -50 and 400°C.

Is A2 stainless steel the same as 316? ›

These are called A2 and A4. A2 is also known as 304, whereas A4 is also known as 316.

Is A2 stainless OK for marine use? ›

Grade A2 (AISI 304) has excellent resistance to atmospheric corrosion, except in severe industrial and marine environments.

Is grade 10.9 stronger than stainless steel? ›

Since the material has resistant to shock, it won't come undone, unlike some stainless steel fasteners. Usually, bolts produced in grade 10.9 are tempered and quenched. Because carbon steel has been tempered and quenched, the resultant high strength bolts grade 10.9, becomes harder and tougher.

Is A2 the same as 304? ›

A2 stainless steel is often referred to as 304 or 18/8 Stainless. 18/8 actually refers to the amount of chromium and nickel in the alloy – 18% chromium and 8% nickel. A2 (304, 18/8) is an austenitic steel and is non-magnetic.

What size is A2 in USA? ›

Standard International Paper Sizes and Measurements
Paper SizeInchesMillimeters
A216-1/2 x 23-3/8 in420 x 594 mm
A311-3/4 x 16-1/2 in297 x 420 mm
A48-1/4 x 11-3/4 in210 x 297 mm
A55-7/8 x 8-1/4 in148 x 210 mm
5 more rows

What does A2 size mean? ›

The A2 format is 420 x 594 mm or 42 x 59.4 cm. In inches, A2 paper has a size of 16.5in x 23.4in. These dimensions mean A2 is normally the perfect choice for calendars, posters and larger format printing.

What size is oversize A2? ›

Paper Sizes
Paper Choice / NameU.S. Measurement (Inches)Metric Measurement (mm)
Oversize A219.13×24.61486×625
Oversize A124.61×35.43625×900
Oversize A035.43×49.01900×1245
JIS B410.12×14.33257×364
19 more rows
Mar 15, 2021

Are stainless steel bolts strong enough? ›

In fact, due to their low carbon content, many stainless steel alloys cannot be hardened through heat treatment. Therefore, when compared to regular steel, the stainless alloys used in bolts are slightly stronger than an un-hardened (grade 2) steel but significantly weaker than hardened steel fasteners.

What is the strongest grade bolt you can buy? ›

A grade 8 bolt is the highest grade SAE bolt. Grade 8 bolts have a minimum tensile strength of 150,000 PSI.

What is A2 steel equivalent to? ›

Equivalent materials to A2 tool steels are: AFNOR Z 100 CDV 5. DIN 1.2363. JIS SKD 12.

Why is German stainless better? ›

German-Style Steel

Stainless steel contains chromium. This is what lowers the Rockwell scale rating. The benefit is a knife blade that resists corrosion and rust. Cooks generally agree that German-style, stainless steel knife blades are hardier than Japanese-style blades.

Will A2 rust stainless? ›

To put it simply, an A2 stainless steel does not rust, but must not come into direct contact with salt. On a boat, it will therefore be used for all the fittings screws or mechanical fasteners. On the other hand, an A4 stainless steel may be in direct contact with the salt and will be used on deck.

Is A2 steel hard to sharpen? ›

A2 steel takes a little more effort to sharpen, but you are rewarded with a more durable edge that lasts longer.

Which bolt is stronger zinc or stainless steel? ›

Though some Zinc alloys can be very strong, overall stainless steel is stronger. However, zinc is a heavy element, and when alloyed with other metals it provides better corrosion resistance, stability, dimensional strength and impact strength.

What grade of stainless steel is best? ›

Most stainless steel ordered around the world is Grade 304. It offers the standard corrosion resistance, formability, strength, and easy maintenance for which stainless is known. While 316 comes in second in terms of quantities sold, it offers vastly superior corrosion resistance to chlorides and acids.

Which bolt is stronger galvanized or stainless steel? ›

Stainless steel screws have an incredibly high tensile strength, measuring between 100,000 and 150,000 tensile pounds per square inch (PSI). Screws made from galvanized steel, on the other hand, have an average of only 62,000 PSI.

Is A2 70 stainless steel magnetic? ›

A2 Stainless Steel

A2 (304, 18/8, EN 1.4301) is an austenitic steel and is non-magnetic. The chromium provides a corrosion and oxidation resistance, however, it can tarnish. It is immune to foodstuffs, sterilizing solutions, most organic chemicals and dyestuffs, also a wide variety of inorganic chemicals.

What grade are stainless steel hex bolts? ›

303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. They are corrosion-resistant and durable.

What is the difference between A2 and a4 stainless steel bolts? ›

The a4 material has 16% chromium, 2% molybdenum and 10.5% nickel in the composition. The a2 material has 10.5% chromium in the composition. The a4 material has much corrosion resistance than the a2 material. The a4 grade material is used in marine grade applications mostly due to the higher corrosion resistance.

What Rockwell is A2 steel? ›

A2 is a 5% Chromium steel which provides high hardness after heat treatment with good dimensional stability. It is heat treatable and will offer a hardness in the range 57-62 HRC.

What is A2 steel used for? ›

A2 steel bar is available in a several forms, including square, round, and rectangular. This highly versatile material can be used for a wide variety of tools that require wear resistance, such as industrial hammers, knives, slitters, punches, tool holders, and woodworking cutting tools.

What are the 3 grades of stainless steel? ›

As you may have noticed, the grades of stainless steel are divided into three categories: Austenitic, Ferritic and Martensitic. This classification depends on their structure and composition. The three types will have differing levels of the elements carbon, chromium and nickel.

What is best grade of stainless steel for saltwater? ›

SAE 316 stainless steel is a molybdenum-alloyed steel and the second most common austenitic stainless steel (after grade 304). It is the preferred steel for use in marine environments because of its greater resistance to pitting corrosion than most other grades of steel without molybdenum.

What grade stainless steel is best for Marine? ›

316 grade steel is often known as Marine Grade Stainless Steel and is one of the most common stainless steel on the market. It is an austenitic grade that has also 2-3% molybdenum, further enhancing corrosion resistance.

What grade stainless steel is marine grade? ›

Type 316 steel or marine grade stainless steel is an austenitic chromium-nickel stainless steel somewhere in the range of two and a 3% molybdenum. The molybdenum content increases corrosion resistance, improves protection from pitting in chloride particle arrangements, and builds quality at high temperatures.

What grade of stainless steel will not rust? ›

All grades of stainless steel resist corrosion, but grade 304 is particularly rustproof because of its high nickel content. This addition to the alloy makes grade 304 considerably more expensive than grade 430 stainless steel, however.

What is the most rust resistant stainless steel? ›

Austenitic stainless steels generally provide the most corrosion resistance because of their high amounts of chromium. This makes grade 304 an excellent choice when corrosion resistance is important.

What stainless steel has the highest tensile strength? ›

High Strength

The highest tensile strengths are seen in the martensitic (431) and precipitation hardening grades (17-4 PH). These grades can have strengths double that of TYPES 304 and 316, the most commonly used stainless steels.

What ratio is A2 size? ›

A2 – 420 mm X 594 mm – 42m x 59.4cm – 15.52 inch x 23.39 inch -1:1.41.

Is legal size A2? ›

Those dimensions are the following: A4 = 216 x 279mm (8.5 x 11 inches) A3 = 279mm x 432mm (11 x 17 inches) A2 = 432 x 559mm (17 x 22 inches)

What is the difference between A1 and A2 size? ›

Prepare for every papercraft project with our handy guide to all the key sizes.
...
International A Sizes.
FormatW x H - InchesW x H - Millimetres
A133.1 x 23.4 in841 x 594 mm
A223.4 x 16.5 in594 x 420 mm
A316.5 x 11.7 in420 x 297 mm
4 more rows

Is A2 twice the size of A3? ›

This gives us an A2 size of 420mm x 594mm. You will notice that this is exactly the same size as 2 A3 sheets or 4 A4 sheets.

Is A1 twice A2 size? ›

The A Series paper size chart, below left, gives a visual representation of how the sizes relate to each other - for example A5 is half of A4 size paper and A2 is half of A1 size paper.

What size is half of A2? ›

An A2 piece of paper measures 420 × 594 mm or 16.5 × 23.4 inches. Cutting it in half will create two A3 sheets of paper.

What does A2 mean on a bolt? ›

A2 stainless steel is often referred to as 304 or 18/8 Stainless. 18/8 actually refers to the amount of chromium and nickel in the alloy – 18% chromium and 8% nickel. A2 (304, 18/8) is an austenitic steel and is non-magnetic. The chromium provides a corrosion and oxidation resistance, however it can tarnish.

What is the difference between A2 70 and A4 70? ›

Stainless Steel A4 Vs A2 Strength

The A4 grade has 800MPa minimum tensile strength and 600MPa minimum yield strength. The A2 grade has 700MPa minimum tensile strength and 450MPa minimum yield strength. None of these materials could be heat treated to get more strength.

Is A2 70 the same as 304? ›

The “70” denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture). Therefore, A2-70 is an austenitic, acid proof stainless grade (usually 304 material – 304 or 304L) which has been cold worked to provide a minimum tensile strength of 700N/mm² (MPa).

What is stainless steel grade A2? ›

A2 Stainless Steel

A2 (304, 18/8, EN 1.4301) is an austenitic steel and is non-magnetic. The chromium provides a corrosion and oxidation resistance, however, it can tarnish. It is immune to foodstuffs, sterilizing solutions, most organic chemicals and dyestuffs, also a wide variety of inorganic chemicals.

What hardness is A2 stainless steel? ›

A2 is a 5% Chromium steel which provides high hardness after heat treatment with good dimensional stability. It is heat treatable and will offer a hardness in the range 57-62 HRC.

Is stainless steel bolts stronger than Grade 8? ›

Despite the popular belief, a stainless steel bolt is actually weaker than a grade 8 bolt. In fact, according to the Society of American Engineers (SAE), grade 8 bolts are the strongest and hardest hex bolt you would want to use in constructions or the automotive industry.

Is A2 tool steel any good? ›

A2 has good toughness, better than many high wear resistance steels. It also offers great ease in grinding and polishing for the knifemaker, and ease in sharpening for the end user.

Can you harden A2 stainless steel? ›

Hardening Tools made from A2 tool steel may be hardened by placing them in a furnace maintained at a temperature of 1725/1775°F (940/969°C). Let the tools heat naturally to the furnace temperature, soak for 20 minutes plus 5 minutes per inch of thickness and air quench.

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