ARP 135-3601 Head Bolt Kit (Head Stud/Bolt Kit) designed for BB Chevy engines. High-performance hex head bolts manufactured with stainless steel/alloy options, painted exterior finish and fully threaded 3/8"-16 UNC thread coverage. Kit includes head studs/bolts engineered for engine head fastening with a compatible groove diameter of 0.44 inches. Item dimensions: 8.6 x 4 x 2.3 inches. Item weight (product): 2.58 kilograms (approx. 5.69 pounds). Made in USA. Manufacturer warranty included. Model/Part: 135-3601. Finish types: Painted. Metal options referenced: Alloy Steel, Stainless Steel, Titanium. Package dimensions reported as 6.096 H x 22.098 L x 10.668 W cm (approx. 2.40 x 8.70 x 4.20 inches). Fastener type: Hexagon bolt; head style: hex; screw head style: hex; screw point style: hex. Thread style: right hand; thread class: 1A; thread type: UNC. Grade rating: Ungraded; item hardness / manufacturer grade: Grade 2. This head bolt kit is a direct-fit replacement (Part Interchange Info: 135-3601) for applicable Chevy BB head applications and is packaged as a single kit (Unit Count: 1).
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