After installation

1 x 6 Reduced Shank Drill Bit (1/2 Shank)

Wall Anchors work in all types of materials

• Fasten aluminum agricultural siding panels to wood joists without pre-drilling • Extra-sharp point for quick penetration of aluminum panels without “point walking” • Twin-lead thread fastens one to three panel thicknesses securely to wood substrate • 5/16" Hex drive • Panel screws available with and without aluminum/neoprene bonded sealing washers

7 x 2 1/4 Simpson Trim-Head Self-Drilling Siding Screw - Square Drive 410 SS - Carton (4000) 3/4-16 Hex Cap Screws 316 Stainless Steel After installation7 x 2 1 4 Simpson Trim Head Self Drilling Siding Screw Square Drive 410 SS Carton (4000) . Attach wood siding, wood panels and metal trim to steel studs #1 square drive trim head, . 230" head diameter, #3 drill point Threaded 2 3 of overall length Drilling thickness capacity: up to 0. 125" (111 mils or 11 ga.)