Huck MGPB-R12-14G-MCT Magna-Grip Lockbolts, Unit of Measure: Inch, Diameter: 0.375 Inch, Minimum Grip: 0.125 Inch, Maximum Grip: 0.875 Inch, Grip Range: 0.125 - 0.875 Inch, Button Head, Carbon Steel Material, Material Detail: Grade 2 Carbon Steel, Zinc Clear Trivalent Chromate Finish, Finish Detail: Zinc Electroplated, Clear Trivalent Chromate, ASTM B633 .0003 Thick, Minimum Hole Size: 0.386 Inch, Maximum Hole Size: 0.422 Inch, Drill Size: Z, Head Diameter: 0.780 Inch, Head Height: 0.250 Inch, Diameter Tolerance: 0.369 - 0.375 Inch, Diameter of Ungrooved Area Under Head: 0.188 Inch, Under Head Pin Length: 2.875-2.925 Inch, Under Head Length to Minimum Grip: 0.125 Inch, Exposed Pin at Minimum Grip: 0.000 - 0.171 Inch, Pin Length to Lock Groove: 0.188 Inch, Clamp Strength: 4000 lbf. (17.79kN), Shear Strength: 6000 lbf (26.689kN), Tensile Strength: 9000 lbf (40.034kN), RoHS Compliant: Yes