Boneham H648MU Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H648MU is a Type H press fit headed drill bushing manufactured from steel and hardened to 60 to 65 HRC for long service life in precision drilling applications. The bushing features a 45/64 inch inside diameter and a 1 inch body outside diameter, with a 1/2 inch length under the head. It installs by press fit into a drill jig or fixture plate without the need for a locking mechanism. Machinists and tooling technicians install this bushing as a permanent guide for drill bits, reamers, or similar cutting tools where consistent hole location and alignment are required across repeated operations.

This bushing is suited for use in drill jig assemblies in machine shops, manufacturing lines, and fabrication environments. The headed design provides a positive stop against the jig plate surface, ensuring consistent seating depth on every installation. The press fit method locks the bushing in place without fasteners, making it appropriate for high-cycle, production-volume drilling setups where repeatability and positional accuracy are critical. It is a non-renewable bushing, meaning it is intended as a fixed installation rather than a field-replaceable liner.

Key Features

• Type H headed design with 1-15/64 inch head outside diameter and 5/16 inch head height for positive seating against jig plate
• Press fit installation method secures bushing without fasteners or locking rings
• Steel construction hardened to 60 to 65 HRC for wear resistance in high-cycle drilling
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inch for precise tool guidance
• ANSI standard compliant geometry for interchangeability with standard jig tooling
• Non-renewable, fixed-mount design suited for permanent jig setups

Compatibility

Designed as an ANSI-standard Type H press fit headed drill bushing for use in drill jigs and fixture plates requiring a permanent, headed bushing with a 45/64 inch bore.

Installation Notes

Installation of press fit drill bushings is typically performed by toolmakers or machining technicians using an arbor press or hydraulic press to drive the bushing flush into a prepared jig plate bore. The receiving hole must be machined to the correct press fit tolerance before installation to avoid damage to the bushing or jig plate. Once pressed in, this bushing is not intended for removal and reinstallation. Always verify bore alignment and cleanliness before pressing the bushing into position.