Boneham H648LK Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H648LK is a Type H press fit headed drill bushing designed to guide drill bits and other cutting tools with precision in jig and fixture applications. Machined from steel and hardened to 60 to 65 HRC, it provides the wear resistance needed for high-repetition drilling operations. The bushing installs by pressing directly into a jig plate without locking hardware, making it a permanent or semi-permanent guide. The 0.5000-inch inside diameter carries a close tolerance of plus 0.0001 to plus 0.0005 inches, ensuring repeatable hole location accuracy. This is a component installed by tool-and-die makers, machinist trades, and production fixture builders.

The H648LK is suited for drill jig applications in manufacturing, fabrication, and machine shop environments. Its headed design seats flush against the jig plate surface, preventing the bushing from being pushed through under drilling load. With a body outside diameter of 1 inch and a length under head of 0.5 inches, it fits standard jig plate counterbores designed to the ANSI bushing standard. This bushing is appropriate for both prototype fixtures and production-volume tooling where consistent hole placement is required.

Key Features

• Press fit installation — no locking collar or hardware required
• Hardened steel construction at 60 to 65 HRC for extended wear life in high-cycle drilling
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for precise tool guidance
• Headed design resists axial push-through under drilling thrust load
• Conforms to ANSI bushing standards for interchangeability with standard jig plates
• Non-renewable design — permanent installation intended for fixed production fixtures

Compatibility

Designed as an ANSI-compliant Type H press fit headed drill bushing for use in standard jig plates and fixtures requiring a 1-inch body outside diameter and 0.5-inch inside diameter tool guide.

Installation Notes

Press fit bushings are installed by machinist or toolmaking trades using an arbor press or hydraulic press — never drive with a hammer, as this can crack the bushing or distort the bore. The receiving hole in the jig plate must be machined to the correct interference fit per ANSI standards before installation. Once pressed in, the H648LK is not intended for removal without risking damage to the bushing or plate. Verify inside diameter clearance for the intended drill or tool shank before pressing the bushing into the fixture.