restricting movement of the screw when it is subjected to vibration

1 1/4 x 18 ITM SDS Plus Hammer Drill Bit X-Cutter

5/8-11 x 1 3/8 Socket Cap Screw Alloy

7/8-9 x 3 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (90)

1-8 x 12 Simpson Wedge Anchor 316 SS (5)

3/4-10 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (25) 6" Aircraft Bits - Wire Gauge restricting movement of the screw3 4 10 x 6 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