Dimensions MaterialCarbon Steel Amount of Clins4 Internal thread5/16-24 External thread9/16-12 Shear Engagementcontact us IN2 Length (L)0.43 Locking Depth (Z)n/a Installation Dimensions Tap Drill D10.516 Countersink D30.572 Thread D29/16-12 Min. Depth T0.5 Removal Dimensions Drill Diameter15/32 Drill Depthn/a Keenserts ® is a registered brand name from Note: This Clinserts ® 74053 is also available in starter kit with installation tool and refill kit