ThruLOK® is a three-part assembly including a ThruLOK® fastener featuring the patent-pending Paddle Point

#17 x 6 High Speed Aircraft Bit Cobalt

1-14 x 2 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/8-16 x 6 Hex Tap Bolt Silicon Bronze

0 x 240 Hex Cap Screw 8

5/8-11 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (25) 5/8-11 Socket Cap Screws Zinc Plated ThruLOK® is a three-part assembly5 8 11 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (25). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4 to 2