A307A Hex Tap Bolts are manufactured from low carbon steel

8 x 1 5/8 Phillips Wafer Hi-Low Cement Board Screws w/ Nibs Spoon Point Ruspert Coated - Carton (4000)

1/4 x 1 1/4 Mushroom Spike Zinc Plated (100)

Heavy duty construction made to Type J aircraft specifications

1-14 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated 5/8-11 Socket Cap Screws Zinc Plated A307A Hex Tap Bolts are1 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