5/16"-18 x 3-1/2" (USS) HEX HEAD CAP SCREW, Zinc Plated (25-PACK)

MATERIAL AND MECHANICAL PROPERTIES OF SAEJ429

THREAD COUNT: 5/16"-18

DIMENSIONS: ANSI/ASME B18.2.1 HEX HEAD CAP SCREWS 

TENSILE: 1/4"-1" NOMINAL DIAMETER 120,000 PSI (MINIMUM) OVER 1" NOMINAL DIAMETER 105,000 PSI (MINIMUM) 

PROOF LOAD: 1/4"-1" NOMINAL DIAMETER 85,000 PSI; OVER 1" NOMINAL DIAMETER 74,000 PSI

THREADS: RADIUS ROOT CLASS 2A TO ANSI/ASME B1.1

HARDNESS: 1/4"-1" NOMINAL DIAMETER ROCKWELL C25-C34 OVER 1" NOMIANL DIAMETER C19-C30

DECARBURIZATION: MEETS SAE J121

DISCONTINUITIES: MEETS SAE J1061