#8 Heavy Duty Jobber Drill Bit

3/4-16 x 6 Grade 5 Hex Cap Screw Zinc Plated

3/4-10 x 2 Hex Cap Screw SS 316 (A4)

1/4 x 1 3/4 Tie Wire Split Drive Anchor Zinc Plated (100)

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

29/64 Cobalt Heavy Duty Jobber Drill Bit (6) Jobber Drill Bits - Cobalt #8 Heavy Duty Jobber Drill29 64 Cobalt Heavy Duty Jobber Drill Bit . Heavy duty construction made to Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium, high temperature and high strength alloys. High red hardness of cobalt permits speeds 30% greater than standard heavy duty split point (HSS) drills.