Boneham PT1212BY Headless Drill Bushing P 0.07in Id Steel

Product Description

The BONEHAM PT1212BY is a press fit headless drill bushing classified under Industry Code P. It is designed to guide drill bits and cutting tools with precision during machining operations. The bushing presses directly into a jig plate or fixture body without a head flange, keeping the top surface flush. It features a 0.07 inch (wire size number 50) inside diameter and a 3/16 inch outside diameter, with an overall length of 3/4 inch. Machined from steel, this bushing holds tight inside diameter tolerances of plus 0.0001 to plus 0.0004 inches to ensure repeatable hole location accuracy. It is a non-renewable type and is counterbored for proper seating.

This bushing is used in drill jigs and fixture tooling across metalworking, manufacturing, and production machining environments. It is suited for applications where a flush, headless profile is required in the jig plate. Installation is typically performed in a machine shop or tool room setting by machinists and toolmakers building or maintaining drill fixtures. The press fit installation method provides a secure, permanent seating in the mating hole of the jig body.

Key Features

• Press fit installation for permanent, secure seating in jig plates
• Headless design provides a flush top surface with the fixture body
• 0.07 inch inside diameter (wire size number 50) for precise drill guidance
• Inside diameter tolerance of plus 0.0001 to plus 0.0004 inches for repeatable accuracy
• Counterbored construction for proper seating depth
• Steel construction for durability in production machining applications

Compatibility

Designed as an OEM-style replacement or direct-fit component for drill jigs and fixtures requiring a P-type press fit headless drill bushing with a 0.07 inch inside diameter and 3/16 inch outside diameter.

Installation Notes

Installation should be performed by a qualified machinist or toolmaker using a press or arbor press to avoid damage to the bushing or jig plate bore. Ensure the receiving hole in the jig plate is machined to the appropriate press fit tolerance before installation. Do not hammer the bushing in freehand, as this can distort the inside diameter and compromise drill guidance accuracy. This is a non-renewable bushing and is not designed for routine removal once installed.