Boneham AM00000631 Press Fit Headless Drill Bushing Pm

Product Description

The BONEHAM AM00000631 is a press fit headless drill bushing in industry code PM, designed to guide drill bits with precision in fixed tooling applications. Made from hardened steel with a Rockwell hardness of 60 to 65 HRC, this bushing is pressed directly into a jig plate without a head or locking collar, keeping the working surface flush. The inside diameter is 6.30 mm with a tolerance of +0.005/+0.014 mm, and the body outside diameter is 12.00 mm. Overall bushing length is 20.00 mm. It meets ANSI standards and weighs 0.37 pounds. Machinists and toolmakers install this type of bushing to ensure repeatable hole location in production drilling operations.

This bushing is suited for use in drill jigs and fixture plates in light to medium production machining environments. It is not renewable, meaning it is pressed in permanently and replaced as a unit when worn. Typical applications include repetitive hole drilling where close positional tolerance must be maintained across multiple workpieces. Because it is headless, it is particularly useful where a flush or recessed bushing surface is required by the jig design.

Key Features

• Press fit installation - no head or collar, installs flush with the jig plate surface
• 6.30 mm inside diameter with tight tolerance of +0.005/+0.014 mm for accurate drill guidance
• 12.00 mm body outside diameter and 20.00 mm overall length
• Hardened steel construction, 60 to 65 HRC for wear resistance in repetitive drilling
• Meets ANSI standards for drill bushing geometry and dimensions
• Non-renewable design - permanently pressed into the jig plate

Compatibility

Designed as an ANSI-compliant PM-code press fit headless drill bushing for use in standard drill jig plates and fixture tooling that accept a 12.00 mm outside diameter bushing bore.

Installation Notes

Installation is performed by toolmakers or machinists using a shop press or arbor press to seat the bushing into a precision-bored hole in the jig plate. The mating bore in the jig plate must be machined to the appropriate interference fit tolerance for a PM-type bushing before installation. Power down all equipment in the work area before pressing the bushing into or out of the plate. Because this is a non-renewable bushing, removal typically damages the bushing and requires replacement.