C6LB-U6-4-QS, Lockbolt Break-Pins (Unified), Huck, C6L Lockbolts, Style : 63253, Fractional Diameter : 3/16 Inch, Head Capped : No, Body Material : Stainless Steel, Material Detail : Stainless Steel 304/305, Finish Detail : Passivated, Underhead Length to Breakpoint : 0.519 Inch (13.18mm);, Drill Size : #9