The nylon flange head adds stability in hollow surfaces

2-4 1/2 x 14 Socket Cap Screw Alloy

3/4-10 x 8 A307 Grade A Carriage Bolt HDG

8 x 1 5/8 Simpson Self-Drilling Fiber-Cement Screws 410 SS - Carton (3000)

1/4 x 2 Nailon™ Anchor Mushroom Zinc Plated (100)

8 x 1 1/4 Simpson Mod Truss-Head Self-Drilling Wire Lath Screws - Phillips Drive 410 SS - Carton (4000) Grade 2 Finished Hex Nuts Zinc Plated The nylon flange head adds8 x 1 1 4 Simpson Mod Truss Head Self Drilling Wire Lath Screws Phillips Drive 410 SS Carton (4000) . Fastens corrugated siding panels to steel stud without pre drilling #3 drill point for quick penetration of aluminum panels without "point walking" Securely fastens one to three panel thicknesses #8 Diameter #2 Phillips drive Drilling thickness capacity: up to 0. 142" (118 mils or 10 ga.)