Tensile strength for diameters 1/4 to 1 inch is a minimum of 120

1/2-13 x 5 1/2 Socket Set Screw Cup Point Alloy

#54 Heavy Duty Jobber Drill Bit

#37 x 6 High Speed Aircraft Bit Cobalt

6 x 1 1/4 Simpson Bugle-Head Self-Drilling Screw - Square Drive 410 SS - Carton (5000)

2-4 1/2 Grade 2 Finished Hex Nut Hot Dipped Galvanized Spike Impact Anchors 316 Stainless Steel Tensile strength for diameters 1/42 4 1 2 Grade 2 Finished Hex Nut Hot Dipped Galvanized . Grade 2 Finished Hex Nuts are manufactured from low carbon steel, 1008 1010 for diameters up to 1 inch (cold formed) and 1045 steel for diameters over 1 inch (hot formed). Material is manufactured to meet or exceed ASTM A563 Grade A. Zinc plated material will meet or exceed ASTM F1941. Hot Dip Galvanized material will meet or exceed ASTM A563. Hot Dip Galvanized nuts are over tapped per ASTM