Stainless steel magnetic bit holders for all 1/4 inch insert bits

#28 High Speed Aircraft Bit

5/16-18 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (450)

7/8-9 x 11 Socket Cap Screw Alloy

7/8-9 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (85) 5/8-18 Socket Cap Screws Alloy Stainless steel magnetic bit holders7 8 9 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (85) . 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