Tensile strength (not pull out) will meet a minimum of 60

5/32 Heavy Duty Drill Bit - Stubby Length

Lag screws longer than 12 inches will have a minimum thread length of 50% of the screw length up to a maximum of 8 inches

Alloy Flat Socket Head Cap Screws from Brighton Best

#2 drill point for quick penetration of metal up to 0

10 x 1 Simpson Pancake-Head Screw - Square Drive 410 SS - Carton (4500) 7/8-9 Grade 8 Hex Cap Screws Yellow Zinc Plated Tensile strength (not pull out)10 x 1 Simpson Pancake Head Screw Square Drive 410 SS Carton (4500) . Low profile head Ideal for securing clips used in standing seam roofing #10 Diameter #2 Square drive