Boneham PT3610IM Headless Drill Bushing 5/16 in Id Steel

Product Description

The BONEHAM PT3610IM is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Manufactured from steel with a hardness of 60 to 65 HRC, this bushing resists wear under repeated drilling cycles. The headless profile sits flush with the jig plate surface, making it well suited for close-clearance work where a flanged head would interfere. Inside diameter is 0.3125 inches with a tolerance of +0.0001 to +0.0005 inches, ensuring tight tool guidance. It is installed by press fitting directly into a prepared hole in the jig body without mechanical fasteners.

This bushing is used in production drilling, reaming, and boring jigs across metal fabrication and machining shops. The headless, non-renewable design is appropriate for permanent installations where the bushing will not require routine replacement. The outside diameter of 0.5625 inches and overall length of 0.625 inches make it a compact fit for thin jig plates. Machinists and toolmakers typically select this bushing when building or repairing drill jigs that require repeatable hole location accuracy in steel or similar workpiece materials.

Key Features

• Press fit installation — no fasteners required for retention
• Headless design allows flush seating in jig plate surface
• 60 to 65 HRC hardness provides wear resistance through extended production runs
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Meets ANSI standards for drill bushing dimensions and tolerances
• Non-renewable, permanent installation type

Compatibility

Designed as a permanent press fit headless drill bushing conforming to ANSI standards and identified by Industry Code P, suitable for installation in jig plates and fixtures requiring a 0.5625-inch body outside diameter bore.

Installation Notes

Installation is performed by a machinist or toolmaker using an arbor press or hydraulic press to seat the bushing flush in a precision-bored hole. The receiving hole must be bored or reamed to the correct interference fit diameter before pressing to avoid bushing distortion or bore damage. Do not use impact tools to drive the bushing into position. Once pressed in, this bushing is not designed for removal and reuse.