the hardness rating is HRC 24-35

7/8-14 x 4 Grade 5 Hex Cap Screw Zinc Plated

Choose type 316 stainless steel for superior corrosion resistance

you’re able to move much more quickly and efficiently

3/4-10 x 1 1/2 Socket Cap Screw 316 Stainless Steel

8 x 1 5/8 Simpson Bugle-Head Self-Drilling Screw - Square Drive 410 SS - Box (100) Finished Hex Nuts 18-8 Stainless Steel the hardness rating is HRC8 x 1 5 8 Simpson Bugle Head Self Drilling Screw Square Drive 410 SS Box (100) . Fasten wood, plywood and OSB panels to steel studs #2 square drive bugle heads drive flush with work surface Tapping screw threads, #3 drill points Drilling thickness capacities: up to . 083" (68 mils, 14 ga.) for #6, up to . 142" (118 mils, 10 ga) for #8 and up to . 177" for #10