Alloy steel, AISI 4140/4142 Quenched and tempered, the specification covers alloy steel bolting materials for low temperature service and  intended for use for pressure vessels, valves, flanges, and fittings.

Material:                 ASTM A320 GRADE L7

Coating:                 PTFE / COLD GALVANIZING / H.D.G / ELCTRO PLATING / PLAIN

Dimensional Standard:  ANSI/ASME B1.1

Available Diameter :   1/2″ TO 4″