Boneham H484JW Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H484JW is a Type H press fit headed drill bushing manufactured from steel. It is designed to guide cutting tools accurately during drilling, reaming, and boring operations in jig and fixture applications. The bushing features an inside diameter of 0.386 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring precise hole location and consistent tool guidance. The headed design seats against the jig plate surface to control depth positioning without requiring a locking collar. This part is installed by toolmakers, machinists, and fixture builders working in production and prototype environments.

The H484JW is suited for press fit installation into drill jig plates and fixtures where a permanent, non-renewable bushing is required. Its 3/4-inch body outside diameter and 1/4-inch length under head make it appropriate for moderate-thickness jig plates. The steel construction provides durability for repetitive drilling cycles in both light and medium production runs. No counterbore is required for installation.

Key Features

• Type H headed design seats flush against jig plate surface for controlled depth positioning
• Inside diameter tolerance of +0.0001 to +0.0005 inches for accurate tool guidance
• Press fit installation — no locking collar or renewal required
• Steel construction provides wear resistance across repeated drilling cycles
• Head outside diameter of 59/64 inches and head height of 7/32 inches for positive seating
• Non-renewable design suited for permanent fixture applications

Compatibility

Designed as a standard press fit headed drill bushing for use in drill jigs and machining fixtures requiring a permanent bushing with a 0.386-inch bore and 3/4-inch body outside diameter.

Installation Notes

Installation is performed by toolmakers or machinists using a press or arbor press to seat the bushing into the jig plate bore. Ensure the receiving bore in the jig plate is dimensioned to the correct interference fit before pressing. The jig plate and workpiece should be secured and all cutting operations should be performed with appropriate guarding in place. Do not use impact tools to drive the bushing, as this may damage the head seating surface or alter bore alignment.