Description Gulso Bolts 3/8″ Head, Machined Stainless Steel are purpose made for securely fastening handle scales. Each bolt consists of a male and female side. Dimensions Head diameter: 9.45 mm Barrel diameter: 6.25 mm Barrel length 10.9 mm Threaded section length: 9.5 mm Head thickness: 2.5 mm Closed length (fully tightened): 15.85 mm Length with three turns of thread: 22.5 mm