1-14 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/8 inch reduced shank with ground flute of M2 high speed steel

39/64 x 6 Reduced Shank Drill Bit (1/2 Shank)

18% chromium and 8% nickel for good corrosion resistance

7/8-9 x 3 Hex Cap Screw SS 18-8 (A2)

3/16 Cobalt Heavy Duty Jobber Drill Bit (12) Cap Nuts Nickel Plated 1-14 x 3 1/2 Grade3 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.