Designed for use in pre-tapped holes and where corrossion is of concern

This combination of features makes the 2-4 1/2 Grade 2 finished hex nut zinc plated an excellent choice for reliable fastening needs

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

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

1/4 x 2 1/2 Mushroom Spike Zinc Plated (100)

11/32 Cobalt Heavy Duty Jobber Drill Bit (6) Jobber Drill Bits - Cobalt Designed for use in pre-tapped11 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.