Boneham AM00000231 Hm Headless Drill Bushing 6.6in Id

Product Description

The BONEHAM AM00000231 is a press fit headless drill bushing in the HM industry standard configuration, designed to guide drill bits and other cutting tools with precision during machining operations. Manufactured from steel, this bushing installs flush with the jig plate surface — no head or collar protrudes above the work face. With an inside diameter of 6.6 inches and a body outside diameter of approximately 0.472 inches (12.00 mm), it delivers consistent tool guidance in high-tolerance drilling fixtures. Machinists and tool-and-die professionals install this type of bushing in drill jigs to maintain hole location accuracy across repeated production runs.

This bushing is suited for use in production drilling jigs and fixtures in both light manufacturing and precision machining environments. The headless profile makes it the correct choice when a flush or sub-flush bushing installation is required and a renewable slip bushing is not needed. The HM industry code designates this as a fixed, non-renewable liner bushing, meaning it is pressed permanently into the jig plate and is not intended for routine field replacement.

Key Features

• Press fit installation method — no fasteners or locking rings required
• HM industry code: fixed headless configuration for permanent jig plate mounting
• Steel construction for wear resistance and dimensional stability under repeated tool passes
• Non-renewable design — rated for long-service permanent press-in applications
• Inside diameter of 6.6 inches for precise tool guidance and hole location control
• Compact overall bushing length of approximately 0.630 inches (16.00 mm) for shallow jig plates

Compatibility

Designed as an OEM-style replacement or direct-fit component for drill jigs and fixtures requiring a press fit headless bushing with HM industry coding and a 6.6-inch inside diameter.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing into a precisely reamed jig plate bore. The mating bore in the jig plate must be machined to the appropriate interference fit tolerance before pressing the bushing in place. Do not hammer the bushing in freehand, as this can damage the bore alignment or distort the bushing. Once pressed in, this non-renewable bushing is not designed for removal and reinstallation.