C6L90-R12-12GA-QS, Lockbolt Break-Pins (Unified), Huck, C6L Lockbolts, Style : 33524, Grade : 2, Fractional Diameter : 3/8 Inch, Head Capped : No, Body Material : Steel, Material Detail : Carbon Steel, Finish Detail : Zinc Electroplated, Clear Trivalent Chromate, ASTM B-633, 0.0004 Inch, Underhead Length to Breakpoint : 1.309 Inch (33.25mm);, Drill Size : W