Boneham H4816IW Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H4816IW is a Type H press fit headed drill bushing used to guide cutting tools during precision drilling operations. Made from steel, this bushing installs directly into a jig plate without a locking mechanism, making it well suited for fixed, high-volume production setups where the bushing does not need to be changed between operations. The inside diameter is 0.332 inches with a tolerance of +0.0001 to +0.0005 inches, holding tight positional accuracy for repetitive hole patterns. The body outside diameter is 3/4 inch and the length under the head is 1 inch.

This bushing is used in drill jig assemblies across metalworking, machining, and fabrication environments. The headed design seats flush against the jig plate surface, providing a positive stop that controls depth and prevents the bushing from being pushed through the plate during drilling. It is a non-renewable type, meaning it is pressed permanently into the jig and is not intended for routine field removal. Machinists and toolmakers install this bushing during jig construction or repair.

Key Features

• Press fit installation — no locking collar or liner bushing required
• Type H headed design provides a positive seating surface against the jig plate
• 0.332 inch (Letter Q) inside diameter with +0.0001 to +0.0005 inch tolerance for repeatable tool guidance
• Steel construction for durability in production drilling applications
• Head outside diameter of 59/64 inch and head height of 7/32 inch
• Non-renewable, fixed-installation design for permanent jig assemblies

Compatibility

Designed as a standard Type H press fit headed drill bushing conforming to industry code H, suitable for use in drill jig plates requiring a permanently installed bushing with a 3/4 inch body outside diameter and 0.332 inch bore.

Installation Notes

Installation is performed by pressing the bushing into a precision-reamed hole in the jig plate using an arbor press or similar press equipment. The jig plate bore must be sized to the appropriate interference fit tolerance for the bushing outside diameter before installation. Because this is a non-renewable bushing, removal typically damages the bushing or the jig plate — verify placement before pressing. Follow your facility or shop standards for press fit tooling procedures.