These carbon steel cap nuts are composed of a hex nut and a top cap manufactured from 1006 to 1010 carbon steel

#17 High Speed Aircraft Bit

After installation

1/4-20 x 1 3/4 STRONG-BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor Zinc Plated (100)

7/8-14 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (15)

2 1/2-8 A194 2H Heavy Hex Nut Hot Dipped Galvanized Square Bugle Coarse Drywall Screws Black Phosphate These carbon steel cap nuts2 1 2 8 A194 2H Heavy Hex Nut Hot Dipped Galvanized . A194 2H Heavy Hex Nuts are manufactured from 1045 steel to meet or exceed ASTM A194 Grade 2H. Hot Dip Galvanized material will meet or exceed ASTM A153 and or ASTM F2329. Galvanized nuts are over tapped per ASTM A563. Typical hardness is HRC 24 35 for diameters up to 1 1 2 inches, HRB 95 HRC 35 for diameters over 1 1 1 2 inches. Proof load strength is 175,000 psi.