1/2-20 x 6 1/2 Socket Cap Screw Alloy

7/8-14 x 5 Hex Cap Screw SS 18-8 (A2)

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

9/16 x 6 ITM SDS Plus eVolution™ Hammer Drill Bit

3/4-10 x 3 1/2 Hex Cap Screw SS 18-8 (A2)

31/64 x 12 High Speed Aircraft Bit Cobalt (3) 2 1/2-4 Socket Cap Screws Alloy 1/2-20 x 6 1/2 Socket31 64 x 12 High Speed Aircraft Bit Cobalt . Manufactured to NAS 907 Type J specifications Heavy duty construction for portable or machine drilling For use in drilling in high tensile strength alloy steels, stainless steels, titanium and other difficult to machine materials Made in the USA