Boneham P4822IM Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P4822IM is a press fit headless drill bushing designed to guide cutting tools with precision in production drilling, reaming, and boring operations. Manufactured from steel, it features a 5/16 inch (0.3125 inch decimal) inside diameter with a tight tolerance range of +0.0001 to +0.0005 inches, a 3/4 inch body outside diameter, and an overall length of 1-3/8 inches. Classified under Bushing Industry Code P, this headless style seats flush within a jig plate and does not require a retaining screw or locking mechanism. Machinists and tool-and-die professionals install this bushing in drill jig fixtures to maintain hole location accuracy across repeated operations.

This bushing suits production environments where a renewable liner bushing is not required and a permanent or semi-permanent installation is acceptable. The press fit installation method drives the bushing directly into the jig plate bore using an arbor press, making it a practical choice for high-volume drilling fixtures in metalworking shops, machine shops, and manufacturing facilities. Its headless design allows flush seating in plates where a headed bushing would interfere with workpiece clearance.

Key Features

• 5/16 inch (0.3125 inch) inside diameter with +0.0001 to +0.0005 inch tolerance for precise tool guidance
• 3/4 inch body outside diameter for secure press fit retention in standard jig plate bores
• 1-3/8 inch overall length provides sufficient guidance depth for drilling and reaming operations
• Headless design seats flush with jig plate surface, eliminating interference with workpieces
• Steel construction for durability under repeated tool contact and production cycles
• Bushing Industry Code P classification for straightforward cross-reference and replacement sourcing

Compatibility

Designed as an OEM-style replacement or new-installation press fit headless drill bushing for use in standard drill jig fixtures requiring a Code P bushing with 5/16 inch ID and 3/4 inch OD.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press to drive the bushing into a properly sized jig plate bore. Ensure the receiving bore is clean, dimensionally correct, and free of burrs before pressing to avoid bushing damage or misalignment. Do not use a hammer directly on the bushing face. Once pressed in, this bushing is not designed for removal and reinstallation, as it is a non-renewable type.