Boneham H206EX Press Fit Headed Drill Bushing

Product Description

The BONEHAM H206EX is a Type H press fit headed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Machined from steel and hardened to 60 to 65 HRC, this bushing resists wear under repeated drilling cycles. The inside diameter is 0.159 inches (wire size 21) with a tight tolerance of +0.0001 to +0.0004 inches, ensuring accurate tool guidance. The body outside diameter is 5/16 inches and the length under head is 3/8 inches. The head outside diameter measures 27/64 inches with a head height of 1/8 inches. This is a permanent, non-renewable press fit design conforming to ANSI standards.

This bushing is suited for use in drill jigs and production fixtures where consistent hole location is required. It is pressed permanently into a prepared jig plate bore and is not intended to be removed or replaced once installed. Typical applications include metalworking shops, machine shops, and toolroom environments where repetitive drilling, reaming, or boring operations demand tight positional accuracy across high production volumes.

Key Features

• Press fit installation for permanent, rigid seating in jig plate bores
• Inside diameter tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Hardened steel construction at 60 to 65 HRC for extended wear life
• Headed (Type H) design provides a positive stop against the jig plate surface
• Meets ANSI standards for drill bushing geometry and dimensions
• Non-renewable design eliminates bushing liner hardware

Compatibility

Designed as an OEM-style replacement or direct-fit component for drill jigs and fixtures requiring a Type H press fit headed bushing with a 0.159 inch inside diameter and 5/16 inch body outside diameter per ANSI specifications.

Installation Notes

Installation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing flush into a reamed bore in the jig plate. The mating bore in the jig plate must be precision reamed to the appropriate press fit tolerance before installation. Power down all associated machinery before working in the fixture. Once pressed in, the bushing is permanent and removal will damage the bushing and may damage the host plate.