zinc plated in either a flat or round head style

Flat countersunk head with self-countersinking nibs

#43 Heavy Duty Jobber Drill Bit

#38 x 6 High Speed Aircraft Bit Cobalt

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

5/8 x 18 High Speed Long Boy (1/2" Shank) 1-8 Grade 5 Hex Cap Screws Zinc Plated zinc plated in either a5 8 x 18 High Speed Long Boy (1 2" Shank) . Straight shank to 1 2 1 2 reduced shank for sizes above 1 2 M2 high speed steel Sharp cutting edge to drill in many different materials: Mild Steel Cast Iron Aluminum Wood Extra length flute with continuous cutting edges for drilling deep holes and fast chip removal Reduced shank fits all drill motors with 1 2 chucks Non slip grip prevents the bit from spinning in the chuck