5/16-18 Heavy Hex Nuts - Grade 5

Manufactured to ASME B18.2.2 & SAE J995 specifications

Proof Load:
Coarse:(1/4" thru 1" diam): 133,000 psi;
(1-1/8" thru 1-1/2" diam): 116,000 psi

Fine: (1/4" thru 1" diam): 120,000 psi;
(1-1/8" thru 1-1/2" diam): 105,000 psi

Coarse Thread / Steel Zinc Plated