Boneham P405KA Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P405KA is a press fit headless drill bushing used to guide drill bits and cutting tools with precision during machining and fabrication operations. Built to Industry Code P, this bushing features a 0.397-inch inside diameter, a 5/8-inch outside diameter, and a 5/16-inch overall length. Constructed from steel, it is pressed directly into a jig or fixture plate without a retaining head, providing a low-profile seating surface where clearance is limited. The inside diameter tolerance of +0.0001 to +0.0005 inches ensures consistent hole location accuracy across repeated drilling cycles. Machinists, tool-and-die makers, and fixture builders install this type of bushing in production and maintenance environments.

This bushing is suited for use in drill jigs where a permanent, non-renewable guide is required. Its headless design makes it appropriate for applications where a flush or recessed installation is necessary and a flanged head would interfere with workpiece seating or clamping. Typical use cases include production drilling fixtures in metalworking shops, maintenance jigs for repetitive hole patterns, and custom tooling plates across light to medium industrial applications.

Key Features

• Press fit installation — no retaining ring or fastener required
• Headless design allows flush or below-surface mounting in jig plates
• Inside diameter tolerance of +0.0001 to +0.0005 inches for consistent tool guidance
• Steel construction for durability under repeated drilling loads
• Bushing Industry Code P for standard jig-plate compatibility
• Non-renewable design — intended as a permanent fixture component

Compatibility

Designed as an OEM-style press fit headless drill bushing for use in standard jig and fixture plates requiring an Industry Code P bushing with a 0.397-inch inside diameter and 5/8-inch outside diameter.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into a correctly sized jig plate bore. The receiving bore in the fixture plate must be machined to the appropriate tolerance to achieve proper interference fit and prevent rotation or pullout during use. Always confirm bore diameter and depth before pressing to avoid bushing damage or misalignment. Do not drive the bushing with impact tools, as this can deform the ID or cause out-of-round conditions.