stainless steel bolts


The Stainless Steel Bolts are specified for high temperature and high pressure services. Roll-fast is a leading manufacturer and supplier of the different stainless steel fasteners.

Roll-fast is bigger diameter bolts & nuts in stainless steel grades in A4-70, A4-80, B8, B8M Class 1 and class 2, SS316S31, A4-70L and A4-80L as per ISO 3506-1 & B7, B16, B8, B8M as per ISO ASTM A193 . These bolts & nuts are widely used in areas where there is high risk of rusting due to application or in areas near to sea shore. Stainless steel bolts are rust free and depending upon the grade they provide the required protection from extreme climatic conditions. These are also used Widely in all other kind of sectors namely, heavy engineering, Valves and pump Industry, Desalination projects, Pumping stations, Mega reservoirs, Bridges and road constructions, cross country pipe lines, flange joints and other critical applications. We are the pioneers in manufacturing stainless steel bolts & nuts for the water sector India, middle east, Europe and USA. These bolts & nuts are manufactured only by hot forging process and we have the complete list of machines in our factory to manufacture these bolts & nuts.

Bolt Grades

Stainless steel hex bolts or screws are offered in A4-70, A4-80, B8, B8M Class 1 and class 2, and in SS316S31 grades. We also offer these grades in 316 and 316L grade. The difference between 316 and 316L is simply the limit of carbon content to 0.03% maximum in 316L grade, whereas in 316 grade it is limited to 0.08%.

  • ASTM A320 - A2-50, A2-50L, A2-70, A2-70L, A2-80, A2-80L, A4-50, A4-50L, A4-70, A4-70L, A4-80, A4-80L.
  • ASTM A193 - B7, B7M, B8, B8T, B8M Class 1, B8M Class 2, B16, SS316S31.


  • ISO 4014
  • ISO 4016
  • ISO 4017
  • DIN 931
  • DIN 933
  • IS 1367
  • BS 3692
  • ASME B18.2.1
  • ASME B18.2.6M

Bolts characteristics

  • High long-lasting Life
  • High Torque adhere capacity
  • Higher corrosion resistance


Xylan, PTFE, Geomat, Chrome finish

Stainless steel bolts are generally available in bright self finish. Stainless steel bolts are polished or ground after forging and other activities to provide them with a bright finish. Sometimes customers require stainless steel bolts to be Xylan coated to provide an added layer on top of the surface bright finish.