Boneham H6412LP Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H6412LP is a Type H press fit headed drill bushing machined from steel for use in jig and fixture applications requiring precise hole guidance. With an inside diameter of 33/64 inches and a body outside diameter of 1 inch, this bushing is pressed directly into a drill jig plate and held permanently in place without a locking collar or liner bushing. The head outside diameter measures 1-15/64 inches and the head height is 5/16 inches, providing a positive stop against the jig surface. Length under the head is 3/4 inches. It is not renewable and is intended for permanent installation in fixed-cycle drilling operations.

Type H headed press fit drill bushings are commonly used in production drilling jigs and fixtures across machining, metalworking, and fabrication environments. The headed design seats flush against the top face of the jig plate, resisting axial push-through under drilling load. This bushing suits applications where a single tool size is used repeatedly through the same fixture location and bushing replacement is not a routine requirement.

Key Features

• Press fit installation — no liner bushing or locking collar required
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for close-tolerance drill guidance
• Head outside diameter of 1-15/64 inches seats against jig plate surface to resist axial displacement
• Steel construction for durability in repetitive production drilling cycles
• Non-renewable fixed design — suited for permanent single-tool fixture locations
• Not counterbored — standard head profile for straightforward jig plate installation

Compatibility

Designed as a standard Type H press fit headed drill bushing for use in drill jigs and fixtures where a permanent, non-renewable bushing is specified.

Installation Notes

Press fit bushings are installed by machinists or toolmakers using an arbor press into a precisely reamed hole in the jig plate. The jig plate hole should be sized to the bushing body outside diameter tolerance to achieve the correct interference fit. Do not hammer the bushing in freehand, as this can damage the bushing bore or distort the jig plate. Verify the bore is clean and free of burrs before pressing.