7 x 3 Simpson Trim-Head Self-Drilling Siding Screw - Square Drive 410 SS - Box (100)

Fastest dust removal

3/8 inch reduced shank with ground flute of M2 high speed steel

including concrete-over-metal decking

1 1/4-7 x 2 3/4 Socket Cap Screw Alloy

1/4-28 x 5 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) Flat Split Drive Anchors Zinc Plated 7 x 3 Simpson Trim-Head1 4 28 x 5 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) . Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on