#1 Heavy Duty Drill Bit - Stubby Length

high temperature and high strength alloys

2-4 1/2 x 16 Socket Cap Screw Alloy

towers and other commercial structures

1 1/8-7 x 10 Socket Cap Screw Alloy

7 x 2 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 316 SS - 1 lbs Pack (138) 1 3/8-12 Socket Cap Screws Alloy #1 Heavy Duty Drill Bit7 x 2 1 4 Simpson Trim Head Wood Decking Screws Square Drive 316 SS 1 lbs Pack (138) . #1 square recess drive and trim head with a Type 17 tip for faster starts and to resist splitting in hardwoods. Coarse threads run approximately 2 3 up the shank to draw the decking tightly to the substrate. Pre drilling is recommended near board ends to reduce splitting. Use only with stable woods and wood substitutes for less noticeable fastening. Slender #7 shank