ARP 641-4500 SAE Bolt Kit 5/16-18 x 4.500 12pt black oxide bolts ymm_42 Specifications Socket Size(s) 12mm hex

Specifications Socket Size(s) 12mm hex UHL 30mm Thread Length 30mm Grip Length n/amm Thread Diameter-Spacing M10 x 1

which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice)

Specifications Socket Size(s) 14mm hex UHL 90mm Thread Length 30mm Grip Length 60mm Thread Diameter-Spacing M12 x 1

Corvette 2005-2016

F-450 1988-1997

ARP 641-4500 SAE Bolt Kit 5/16-18 x 4.500 12pt black oxide bolts ymm_42 Specifications Socket Size(s) 12mm hexSpecifications Socket Size(s) 3 8 12pt UHL 4. 500 Thread Length 1. 000 Grip Length 3. 500 Thread Diameter Pitch 5 16 18 Grip Diameter 5 16 Wrenching 3 8 Head Height 0. 300 Collar Diameter 0. 620