2-4 1/2 A194 2H Heavy Hex Nut Plain

you protect your surfaces from enduring sudden failures or breakages while promoting long-term durability

frictional fit restricting movement of the screw when it is subjected to vibration

33/64 x 6 Reduced Shank Drill Bit (1/2 Shank)

Phosphorus: Maximum 0

11/64 Cobalt Heavy Duty Jobber Drill Bit (12) 1/2 Hex Lag Screws Hot Dipped Galvanized 2-4 1/2 A194 2H Heavy11 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.