Boneham H166DA Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H166DA is a Type H press fit headed drill bushing manufactured from steel for use in precision drilling and machining applications. The bushing features a 0.0995 inch inside diameter with a tolerance of +0.0001 to +0.0004 inches, providing accurate and repeatable hole guidance. The body outside diameter is 0.25 inches, and the length under the head is 0.375 inches. The headed design seats flush against the jig plate surface, keeping the bushing in position during drilling operations without a locking collar. This part is installed by machinists, toolmakers, and precision fabricators working with drill jigs and fixture plates.

The H166DA is suited for production and prototype drilling operations where a permanent, non-renewable bushing is required. It is pressed directly into a drilled and reamed jig plate hole, making it appropriate for applications where the bushing will not need to be replaced after initial installation. Typical use cases include drill jigs used in metalworking, aerospace fabrication shops, and general manufacturing environments where hole location accuracy is critical.

Key Features

• Type H press fit installation — no locking collar required
• 0.0995 inch ID with tight tolerance of +0.0001 to +0.0004 inches for precise drill guidance
• 0.25 inch body outside diameter with 0.375 inch length under head
• Head outside diameter of 0.359 inches (23/64 inch) and head height of 0.094 inches (3/32 inch)
• Steel construction for durability in repetitive drilling operations
• Non-renewable design — intended as a permanent fixture installation

Compatibility

Designed as an OEM-style replacement or new-installation component for standard drill jig plates and fixtures requiring a Type H press fit headed bushing with a 0.0995 inch inside diameter and 0.25 inch body outside diameter.

Installation Notes

Press fit drill bushings are installed by machinists or toolmakers using an arbor press or hydraulic press to drive the bushing into a pre-reamed hole in the jig plate. The receiving hole must be machined to the appropriate tolerance to achieve the correct press fit interference. Do not hammer the bushing in freehand, as this can damage the head or distort the inside diameter. Confirm the jig plate is securely fixtured and the bushing is properly aligned before pressing.