Hardness for plain and zinc plated washers is HRC 38-45 and HRC 26-45 for hot-dip galvanized washers per ASTM F436

Finished Hex Nuts in 18-8 stainless steel are for use with stainless steel bolts or screws with a specified minimum tensile strength equal or less than the specified proof stress of the mating nut

1/4 Heavy Duty Jobber Drill Bit

8 x 2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - Bulk Pail (3000)

Fastest dust removal

8 x 3/4 Simpson Mod Truss-Head Self-Drilling Wire Lath Screws - Phillips Drive 410 SS - Carton (6000) Phillips Self Drilling Drywall Screws Zinc Plated Hardness for plain and zinc8 x 3 4 Simpson Mod Truss Head Self Drilling Wire Lath Screws Phillips Drive 410 SS Carton (6000) . 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.)