Boneham P4812KE Press Fit Headless Drill Bushing

Product Description

The BONEHAM P4812KE is a press fit headless drill bushing designed to guide drill bits and cutting tools with precision in metalworking and machining applications. Manufactured from steel with a hardness rating of 60 to 65 HRC, this bushing resists wear under repeated tooling cycles. The inside diameter of 0.404 inches accepts Letter Y and Wire P size tooling, while the 3/4 inch outside diameter and 3/4 inch overall length provide a compact, stable footprint in the jig plate. Machinists and tool-and-die technicians install this bushing type when a flush, headless profile is required at the jig surface. Inside diameter tolerance holds to +0.0001 to +0.0005 inches for consistent tool guidance.

This drill bushing is suited for drill jig fixture work in manufacturing, fabrication, and general machine shop environments. The headless design sits flush with the jig plate surface, making it appropriate where a protruding head would interfere with workpiece clearance or fixture stackup. It is a non-renewable type, intended as a permanent press fit installation in the jig body. Typical users include machinists, toolmakers, and fixture builders working in production or job shop settings.

Key Features

• Press fit installation method for permanent, rigid seating in jig plates
• Headless design provides a flush surface profile with no protruding collar
• Steel construction hardened to 60 to 65 HRC for extended wear life under repeated drilling cycles
• Inside diameter of 0.404 inches with a tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Meets ANSI standards for drill bushing dimensional conformance
• Non-renewable type for applications where bushing replacement is not required

Compatibility

Designed as an OEM-style replacement or new installation press fit headless drill bushing for use in standard ANSI-compliant drill jig fixtures requiring a Letter Y or Wire P size bore.

Installation Notes

Press fit bushings are installed by a qualified machinist or toolmaker using an arbor press or hydraulic press sized for the bushing outside diameter. The jig plate bore should be machined to the appropriate interference fit tolerance before installation. Do not hammer the bushing directly without a proper driver to avoid distorting the bore or damaging the bushing face. Once pressed in, this non-renewable bushing is not intended for removal and reinstallation.