The nylon flange head adds stability in hollow surfaces

7 x 1 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - 1 lbs Pack (256)

1/2 x 6 High Speed Aircraft Bit

The Drive® anchor is a one piece

Material is manufactured with rolled threads

5/8-11 x 7 Carriage Bolt 18-8 (A2) Stainless Steel M12-1.75 Hex Cap Screws 8.8 DIN 931 Zinc Plated The nylon flange head adds5 8 11 x 7 Carriage Bolt SS 18 8 (A2) . 18 8 stainless steel carriage bolts are manufactured to meet or exceed ANSI B18. 5 and will have a typical composition of 18% chromium and 8% nickel. These percentages exist in 303, 304 and 305 series stainless steels so 18 8 is used at times to designate any and all of those alloy groups. 18 8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments.