Expands the size range capacity of a 1/2 inch portable drill chuck

8 x 2 1/4 Phillips Flat w/ Nibs Self Drilling Cement Board Screws w/ Wings Ruspert Coated - Carton (3000)

7/16-14 x 4 1/2 Hex Cap Screw SS 316 (A4)

1/4-20 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (50)

L9® components are fabricated from high-grade alloy steel AISI 8640H on state-of-the-art equipment right here in the USA

1/4-28 x 7/8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) Phillips Flat Self Drilling Cement Board Screws with Wings Expands the size range capacity1 4 28 x 7 8 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 of