1 1/2-12 Nylon Insert Locknut Zinc Plated

1/8 Cobalt Heavy Duty Jobber Drill Bit

Typical hardness is HRB 68 - HRC 32

Proof load strength will meet a minimum of 100

1 3/8-6 A194 2H Heavy Hex Nut Plain

7/64 Cobalt Heavy Duty Jobber Drill Bit (12) Drop-In Anchors 303 Stainless Steel 1 1/2-12 Nylon Insert Locknut7 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.