9/16-18 x 1 1/4 Socket Set Screw Cup Point Alloy

#3 square drive

A307A Hex Tap Bolts are manufactured from low carbon steel

Wings ream hole in board preventing "jacking action"

9/16-12 x 5 Hex Cap Screw SS 316 (A4)

1-14 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated 5/8-11 Socket Cap Screws Zinc Plated 9/16-18 x 1 1/4 Socket1 14 x 2 1 4 Grade 5 Hex Cap Screw Zinc Plated . Grade 5 Hex Cap Screws are manufactured from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1