Specialist in Manufacturing Industrial Steel Fasteners

A4-80 Stainless Steel Bolt

Vision alloy is the number one supplier of steel products. These steel products are commonly manufactured by using high-quality grades and raw materials. We are the number one suppliers of grade A4-80 stainless steel bolts. These bolts are enriched with excellent properties and characteristics. Vision Alloy is one the most famous supplier of stainless steel bolts, fasteners, and other products. 

Grade A4-80 stainless steel bolt is made of high quality and superior material. These bolts are being used in multiple industries for various applications. The estimated working temperature for these bolts is below and above 500ºC. These bolts are highly ductile and durable. The chemical composition of this A4-80 grade includes a high amount of molybdenum, chromium, and nickel. It also includes a moderate amount of carbon in it. A4-80 stainless steel bolts also include some amount of nitrogen in them which provide great stability and strength to an alloy. 

The A in this grade identifies as austenitic steel. This grade is made by using austenitic steel which provides great strength and ductility to an alloy. Grade A4-80 provides excellent resistance from all types of chemical reactions. It provides great resistance from corrosion, crevice corrosion, and stress cracking. It also provides excellent efficiency to the product. Stress cracking occurs above 60ºC so this grade can easily prevent that. 

Bolts are commonly used for firmly joining two or more parts or objects together. Sturdiness, strength, and malleability plays an important role in the manufacturing of these bolts. The tensile and yield strength of these bolts is comparatively higher than of other grades. ( tensile: 800 Mpa/ yield: 600 Mpa). 

A4 80 Stainless steel bolt

A4-80 Stainless Steel Bolt Specification :

Product name Stainless Steel A4 80 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
Stainless Steel A4 80 Bolts Size M2 – M100
Stainless Steel A4 80 Bolts Diameter M3-M60
Stainless Steel A4 80 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
Stainless Steel A4 80 Bolts Application Wind tower, Nuclear power, Railway, Automotive industry, Construction, Electronic industry
Dimensions ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded.
Drive Style Type I
Stainless Steel A4 80 Bolts Material 18-8 Stainless Steel, stainless steel ss 304/ SS316 A2/A4, SS201, SS303, SS304, SS316, SS316L, SS904L, A4-80; 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 stainless steel A4 80 Bolts, A4 80: 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 stainless steel A4 80 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
Tolerance of stainless steel A4 80 Bolts +/-0.01mm to +/-0.05mm
Samples Yes
Production Capacity 2,700,000 pieces per month

Property Class :

For Bolts & Screws: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H

For Nuts: A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040

For SHCS: F837B, F837C, F837E, F837

For Threaded Rods: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2

A4-80 Stainless Steel Bolt Composition :

Chemical Composition
Typical compositional ranges for grade A4-80 Stainless Steel Bolt

Grade C Si Mn P S Cr Mo Ni Cu N
A4-80 Min 16.0 2.0 10.5
ISO Max 0.08 1.00 2.00 0.045 0.03 18.5 3.0 14.0 1.0
A4-80 Min 16.0 2.0 11.5 0.12
ISO² Max 0.03 1.00 2.00 0.045 0.03 18.5 3.0 14.0 1.0 0.22

Mechanical Properties
Typical mechanical properties for grade A4-80 Stainless Steel Bolt

Grade Tensile Strength (MPa) min Yield Strength
0.2% Proof
(MPa) min
(% in 50mm) min
Rockwell B (HR B) max
Brinell (HB) max
A4-80 800 600 30 Not required Not required

Physical Properties
Typical physical properties for annealed grade A4-80 Stainless Steel Bolt

Grade Density
Elastic Modulus (GPa) Mean Co-eff of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat
0-100 °C (J/kg.K)
Elec Resistivity (nΩ.m)
0-100 °C 0-315 °C 0-538 °C
At 100 °C At 500 °C
A4-80 8000 193
15.9 16.2 17.5
16.3 21.5
500 740
Our Products