Boneham H135CY Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H135CY is a Type H press fit headed drill bushing designed to guide cutting tools accurately during drilling operations. Made from steel, this bushing features an inside diameter of 0.098 inches (wire size 40) and a body outside diameter of 13/64 inches. It installs by press fitting directly into a jig plate or fixture without requiring a locking collar or liner bushing, making it a fixed, permanent-style guide. Machinists and tooling specialists use this component in drill jigs to maintain hole location accuracy across repeated operations. The head design seats flush against the jig plate surface to control tool entry depth and prevent the bushing from pushing through the plate.

This bushing is suited for production drilling applications in machine shops, toolrooms, and manufacturing environments where precise hole placement is required. Its compact dimensions make it appropriate for close-tolerance jig fixtures where spacing between drill points is limited. The press fit installation method means the bushing is not intended for frequent removal or field replacement once seated. It is installed by qualified toolmakers or machinists during jig assembly or refurbishment.

Key Features

• Type H press fit headed design — permanent installation without a liner bushing
• Inside diameter: 0.098 inches (wire size 40) with a tolerance of +0.0001 to +0.0004 inches
• Body outside diameter: 13/64 inches; head outside diameter: 19/64 inches
• Length under head: 5/16 inches
• Head height: 3/32 inches
• Steel construction for durability in repetitive drilling applications

Compatibility

Designed as an OEM-style fixed drill bushing for use in standard drill jig fixtures requiring a Type H press fit headed bushing with a 0.098-inch inside diameter.

Installation Notes

Installation is performed by toolmakers or machinists using a press to seat the bushing into the jig plate bore. Ensure the receiving bore in the jig plate is machined to the correct tolerance for a press fit before installation. Once pressed in, this bushing is not designed for routine removal. Verify inside diameter clearance for the intended drill or reamer before seating the bushing permanently.