4-4 A194 2H Heavy Hex Nut Plain

Marine screws are locked in place thanks to their "teeth" (the thread indentations will resist back-out even after prolonged vibration)

7/8-9 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

5/8-11 x 4 1/2 Hex Cap Screw SS 316 (A4)

7/8-9 x 2 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated

10 x 3 Simpson Bugle-Head Self-Drilling Screw - Square Drive 410 SS - Box (100) M20-2.50 Hex Cap Screws DIN 933 18-8 Stainless Steel (A2) 4-4 A194 2H Heavy Hex10 x 3 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