5/16-24 x 2.250 12pt black oxide bolts

5/16-24 x 2.250 12pt black oxide boltsMaterial: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

They’re offered in a variety of heights to accommodate most any combination of carb and spacer

This is a premium steel that is processed to deliver superior strength and fatigue properties

The parts are CNC machined from solid aluminum billet (6061) or 1018 mild steel

It is the most accurate wayto determine the correct pre-load in the rod bolt

The studs are manufactured from 8740 chrome moly steel

but are not limited to: oil or fuel tanks

To provide you with required reliability and improved performance

It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220

ARP’s timing cover bolts are available in both polished stainless steel or black oxide finish chrome moly

All Pro Series head bolts have are reduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing

That’s because Chevy Duramax

This material is easily contaminated and subject to stress corrosion