1/4-20 Lipped Drop-In Anchor Zinc Plated (100)

Alloy Socket Head Cap Screws from Brighton Best

A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A

#19 Heavy Duty Jobber Drill Bit

hardness will range from HRC 31-39

15/32 Cobalt Heavy Duty Jobber Drill Bit (6) 1/2-13 Grade 5 Hex Cap Screws Zinc Plated 1/4-20 Lipped Drop-In Anchor Zinc15 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.