Drill: D0397 Tapping Hole (Through): TTI0397 Tapping Hole (Blind): TBI0397 Broaching Tools : BT397-2 Temperature Range :
Dimensions Material4140 Alloy Amount of Clins2 Internal thread1/4-28 External thread7/16-14 Shear Engagement0.2842 Length (L)0.37 Locking Depth (Z)n/a Installation Dimensions Tap Drill D10.397 Countersink D30.447 Thread D27/16-14 Min. Depth T0.43 Removal Dimensions Drill Diameter11/32 Drill Depthn/a Keenserts ® is a registered brand name from Note: This Clinserts ® PKNH428JMX is also available in starter kit with installation tool and refill kit