1/8 Cobalt Heavy Duty Jobber Drill Bit

1/4-20 Drop-In Anchor 303 SS (100)

3/4-10 x 10 A307 Grade A Carriage Bolt Zinc Plated

Good for exterior and most marine applications

1 1/2-12 Nylon Insert Locknut Zinc Plated

7/64 Cobalt Heavy Duty Jobber Drill Bit (12) Drop-In Anchors 303 Stainless Steel 1/8 Cobalt Heavy Duty Jobber7 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.