While grade 2 is one of the most popular grades of alloy, the Grade A2 stainless steel fasteners exhibit several important properties, which makes them very relevant across several industries. For instance, the demand for A2 70 Hex Head Bolt is ensured by demonstrating properties such as strong abrasion resistance and reliably low levels of distortion.

A2 70 Hex Head Bolt

A2 70 Hex Head Bolt

Since the alloy has good ductile and formability features, producing threads on the A2 50 Stainless Steel Screw is relatively easy. Another important property of the A2 70 Bolts is their good resistance to corrosion at low and ambient temperatures. In fact, the Stainless Steel A2-80 Nuts has good mechanical strength even in cryogenic temperatures. Furthermore, the high level of hardness in amalgamation with the consistent dimensional stability is why the A2-70 g304 Studs exhibits good resistance to wear & tear as well.


Grade A2 Stainless Steel Fasteners Standard Dimensions

Socket & Slotted Set Screws Socket & Slotted Countersunk Screws Studs Washers
DIN 913 DIN 963 DIN 938 DIN 125
DIN 914 DIN 7991 DIN 939 DIN 9021
DIN 915 BS 4168 DIN 2510 BS 4320
DIN 916 BS 1981 BS 4439 BS 3410
DIN 551 BS 483 BS 2693  
DIN 553 BS 2470   Spring Washers
DIN 438     DIN 127
BS 4168     BS 4464
      BS 1802
Hexagon Bolts / Set Screws Stud Bolts Hexagon Nuts Socket Capscrews
DIN 931 BS4882 DIN 934 DIN 912
DIN 933 DIN 976 BS 1768 DIN 6912
BS 1768   BS 1769 DIN 7984
UNI 5731   BS 1083 ANSI B18.3
UNI 5739   BS 3692 ISO 4762
ISO 4014   ISO 4032 UNI 5931
ISO 4017   ISO 4033 BS 2470
BS 1769   ANSI B18.2.2 BS 4168
BS 3692      
ANSI B18.2.1      

A2 50 Stainless Steel Screw Mechanical And Physical Properties

Grades Tensile Strength (MPa) min Yield Strength
0.2% Proof
(MPa) min
Elong
(% in 4D min)
Red of Area (% min) Hardness (HRC max)
A2 700 450 40 Not required Not required

Stainless Steel A2-80 Nuts Chemical Composition Table

Product   C Mn P S Si Cr Ni Cu
A2 Min - - - - - 15.0    
  Max 0.1 2.0 0.05 0.03 1.0 20.0 19.0 4.0

A2 70 Hex Head Bolt size standard and specification

Specifications ASTM A193, A194, F594, F593, F1554
Size of Machine Screw M1.6 - M12
Lengths From 3 upto 200 Millimetre
Sizes of Self Tapping Screws No.2 - No.14
Sizing 3/6 inch upto 2 inch | M3 – M56