5/8-11 x 7 Flat Socket Cap Screw Alloy

#2 square drive wafer head

3/4-10 x 2 Hex Cap Screw SS 316 (A4)

8 x 1 1/2 Simpson Flat-Head Marine Screw - Phillips Drive 316 SS - Box (100)

No pre-drilling required

2 1/2 F436 Flat Washer HDG Hex Washer Head Metal-Panel Screws 316 Stainless Steel with EPDM Washer 5/8-11 x 7 Flat Socket2 1 2 F436 Flat Washer HDG . F436 flat washers are manufactured from carbon steel to meet or exceed ASTM F436. Zinc plated material will meet or exceed ASTM F1941. Hot Dip Galvanized material will meet or exceed ASTM A153 and or ASTM F2329. Hardness for plain and zinc plated washers is HRC 38 45 and HRC 26 45 for hot dip galvanized washers per ASTM F436.