Boneham P204DY Press Fit Headless Drill Bushing

Product Description

The BONEHAM P204DY is a press fit headless drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Manufactured from steel, this bushing features a 0.1285 inch inside diameter (wire gauge No. 30) and a 5/16 inch body outside diameter, with an overall length of 0.25 inches. The inside diameter is held to a tight tolerance of +0.0001 to +0.0004 inches, ensuring consistent tool guidance and repeatable hole location. It is installed without fasteners by pressing directly into a jig plate, making it a straightforward solution for production drilling fixtures.

This bushing suits machine shops, tool-and-die operations, and manufacturing environments where a permanent, low-profile guide bushing is required. The headless design sits flush with the jig plate surface, which is preferred when clearance is limited or when the fixture surface must remain unobstructed. The P series industry code identifies it as a standard fixed press fit type, compatible with jig plates sized to accept a 5/16 inch OD bushing bore.

Key Features

• Press fit installation — no fasteners or locking collar required
• Headless design for flush, low-profile seating in jig plates
• 0.1285 inch ID (No. 30 wire gauge) with +0.0001 to +0.0004 inch tolerance
• Steel construction for wear resistance in repeated-use drilling fixtures
• Industry standard P bushing code for consistent interchangeability
• Non-renewable fixed installation — intended as a permanent bushing

Compatibility

Designed as a permanent press fit replacement or new-installation bushing for jig plates bored to accept a 5/16 inch outside diameter P-series headless drill bushing per standard industry tooling specifications.

Installation Notes

Installation is performed by a machinist or toolmaker using an arbor press or hydraulic press to seat the bushing flush into a properly sized jig plate bore. The receiving bore in the jig plate must be machined to the correct interference fit tolerance to retain the bushing securely during service. Because this is a non-renewable bushing, removal typically damages either the bushing or the plate, so bore location should be confirmed before pressing. Always de-burr the jig plate bore before installation to avoid misalignment or bushing damage.