15/32 x 18 High Speed Long Boy

but they’re also vibration- and shock-resistant

10 x 2 1/2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - 5 lbs Pack (410)

1-8 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated

2-4 1/2 x 12 Socket Cap Screw Alloy

9 x 2 1/2 Star Flat Decking Screws w/ Nibs W.A.R. Coated Type 17 - Carton (2,500) Flat Washers 316 Stainless Steel 15/32 x 18 High Speed9 x 2 1 2 Star Flat Decking Screws w Nibs W. A. R. Coated Type 17 Carton (2,500) . Exterior wood screws used for attaching wood to wood. Exceeds 1,000 hr. salt spray resistance Designed to work with ACQ treated lumber High degree of corrosion resistance Star drive prevents cam out and stripping for improved drivability