1-8 x 8 Grade 5 Hex Cap Screw Zinc Plated

5/16 Cobalt Heavy Duty Jobber Drill Bit

3/4-10 x 24 A307 Grade A Carriage Bolt HDG

Grade 2 Finished Hex Nuts are manufactured from low carbon steel

7/16 Cobalt Heavy Duty Jobber Drill Bit (6) M20-2.50 Hex Cap Screws DIN 933 18-8 Stainless Steel (A2) 1-8 x 8 Grade 57 16 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.