1/2-13 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated

As the anchor is driven into the hole

providing adequate bearing surface for nearly all applications

tie-wire or slotted hex head styles

39/64 x 6 Reduced Shank Drill Bit (1/2 Shank)

11/32 Cobalt Heavy Duty Jobber Drill Bit (6) Jobber Drill Bits - Cobalt 1/2-13 x 7 Grade 811 32 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.