hollow or grout-filled block

3/4-10 x 2 Socket Cap Screw 316 Stainless Steel

1-8 x 3 1/2 Flat Socket Cap Screw Alloy

Pre-drilling is recommended near board-ends to prevent splitting

23/64 x 12 High Speed Aircraft Bit Cobalt

7/8-9 x 3 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated SDS Plus eVolution Hammer Drill Bits hollow or grout-filled block7 8 9 x 3 3 4 Grade 8 Hex Cap Screw Yellow Zinc Plated . Grade 8 Hex Cap Screws are manufactured 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 1 2 inches