ASTM Studs & Bolts

The ASTM standard covers alloy steel and stainless steel bolting materials for high and low temperature service. This specification includes fasteners intended for use in pressure vessels, valves, flanges, and fittings.

Available in various finishes such as PTFE, RILSAN, DACROMATE, ZINC FLAKE , TEFLON etc.


12 mm dia to 72 mm diaA193 Grade B7 | Nuts A194 Grade 2H
A193 Grade B7M | Nuts A194 Grade 2HM
A193 Grade B16 | Nuts A194 Grade 4
A320 Grade L7 | Nuts A194 Grade 2H
A320 Grade L7M | Nuts A194 Grade 2HM
A325 Bolts, Nuts & Washer