ASTM A320 Grade L7

Low Temperature Alloy Steel Bolting

ASTM A320 Grade L7

ASTM A320 Grade L7 Studs ASTM A320 Grade L7 is a standard specification for high tensile 4140 alloy steel bolting materials, intended for use in low temperature services. The term "bolting material" as used in this specification covers, rolled, forged or strain hardened bars, bolts, screws, studs and stud bolts. These alloy steel fasteners are used for bolting pressure vessels, valves, flanges and fittings for low-temperature service.

Boltport Fasteners is a manufacturer and supplier of ASTM A320 Grade L7 bolts, screws, studs, stud bolts, threaded rod and round bars. We offer full range of sizes, threads and fasteners such as hex bolts, heavy hex bolts, hex cap screws, socket head cap screws, set screws, full threaded stud bolts, double end studs, threaded rods, eye bolts and anchor bolts, etc.,

View Specification page to know more about A320 Grade L7 chemical compositions, mechanical properties such as tensile, yield strength, hardness, heat treatment procedure, product marking, etc.,

ASTM A320 Grade L7 Fasteners

Product Standards

Product DIN ISO ASME UNI
Imperial Metric
Hex Bolts 931 4014 B18.2.1 B18.2.3.5M 5737
Heavy Hex Bolts 6914 7412 B18.2.1 B18.2.3.7M 5712
Hex Cap Screws 933 4017 B18.2.1 B18.2.3.1M 5739
Socket Head Cap Screws 912 4762 B18.3 B18.3.1M 5931
Set Screws 916 4029 B18.3 B18.3.1M 5929
Stud Bolts 976 -- B18.31.2 B18.31.1M 6610
Countersunk Screws 7991 10642 B18.3 B18.3.1M 5933
Hex Nuts 934 4032 B18.2.2 B18.2.4.1M 5588
Heavy Hex Nuts 6915 4775 B18.2.2 B18.2.4.6M 5713