high/low thread form incorporates indentations ("teeth") that cut easily and quickly through high-density materials

HeadLOK® offers higher design shear than 3/8" lag screws and no pre-drilling is needed

75 x 90 Socket Set Screw Cup Point DIN 916 Black Oxide Alloy

50 x 55 Socket Cap Screw 12

3/8-24 x 1 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) 3/4 Hex Lag Screws Zinc Plated high/low thread form incorporates indentations3 8 24 x 1 1 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. 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 inch is a minimum