Boneham P4016KQ Headless Drill Bushing 7/16 in Id Steel

Product Description

The BONEHAM P4016KQ is a headless, press fit drill bushing manufactured from steel and designed to guide cutting tools with precision in jig and fixture applications. It carries industry code P and features an inside diameter of 0.4375 inches, a body outside diameter of 0.625 inches, and an overall length of 1 inch. Hardness is rated at 60 to 65 HRC, providing wear resistance under repeated drilling cycles. The inside diameter tolerance is held to +0.0001 to +0.0005 inches, ensuring consistent tool guidance. This bushing is a permanent, non-renewable installation intended for production machining environments where close-tolerance hole location is required.

Press fit headless drill bushings in the P series are used in drill jigs, machining fixtures, and tooling plates across metalworking, manufacturing, and maintenance operations. The headless profile sits flush with or below the jig plate surface, making it suitable for applications where a protruding head would interfere with workpiece contact or clamping. This part is appropriate for machine shops, tool rooms, and production lines where ANSI-standard bushing dimensions are required. Installation and replacement are typically performed by machinists or tooling engineers.

Key Features

• Headless press fit design sits flush with jig plate surface for unobstructed workpiece contact
• Inside diameter of 0.4375 inches held to a tight tolerance of +0.0001 to +0.0005 inches for accurate tool guidance
• Steel construction hardened to 60 to 65 HRC for long service life under repeated drilling cycles
• ANSI-standard P series dimensions ensure interchangeability with compatible tooling setups
• Non-renewable, permanent installation - no liner or locking mechanism required
• Overall length of 1 inch suits standard jig plate thicknesses

Compatibility

Designed as an ANSI-standard P series press fit headless drill bushing for use in drill jigs and machining fixtures requiring a 0.4375 inch bore and 0.625 inch body outside diameter.

Installation Notes

Press fit drill bushings are installed by machinists using an arbor press or hydraulic press; driving with a hammer is not recommended as it can damage the bushing bore or distort the jig plate hole. The receiving hole in the jig plate must be machined to the correct press fit tolerance to achieve proper retention. Always de-burr and clean the receiving hole before pressing the bushing in. Verify alignment before applying press force to prevent cocking or seizing.