ARP 134-1504 Rear Motor Cover Bolt Kit for CHEVROLET LS Gen III/IV. 8740. 12pt ymm_47 5 1) Thread Size 3/8˝

5 1) Thread Size 3/8˝ 2) UHL 1

5/16 12pt Material: 8740 Chrome Moly

12-position rotary dial with 330° sweep

000˝ 4) Grip Length 0

F-250 1969-1997

ARP 134-1504 Rear Motor Cover Bolt Kit for CHEVROLET LS Gen III/IV. 8740. 12pt ymm_47 5 1) Thread Size 3/8˝Available in a variety of sizes to suit your needs, all ARP 12 point nuts are constructed from 8740 chrome moly steel or ARP 300 Series stainless steel material, and meet ARPs highest standards of quality. Rated at 180, 000 psi tensile strength, ARP 12 point nuts are manufactured in thick wall versions for optimum strength and rigidity and thin wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black