Boneham CB00000012 Slip-fixed Drill Bushing 0.1285 Id

Product Description

The BONEHAM CB00000012 is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. It carries the industry code SF and features a 0.1285-inch inside diameter (Number 30 wire size) with a body outside diameter of 0.3125 inches (5/16 inches). The bushing is manufactured from steel and hardened to 60 to 65 HRC for long service life under repeated drilling cycles. It includes a head and is counterbored for secure seating. A length under head of 0.75 inches (3/4 inches) provides adequate tool engagement depth for typical jig plate thicknesses. Licensed machinists, toolmakers, and fixture builders install this component in production and prototype drilling operations.

This bushing is suited for use in drill jigs and tooling fixtures in manufacturing, metalworking, and machining environments. Its renewable design allows it to be replaced without retiring the fixture, reducing tooling costs in high-cycle production settings. The slip-fixed style allows the bushing to be removed and replaced while remaining locked in position during drilling via a compatible lock screw. It is compatible with the LS-1 lock screw standard, making it interchangeable within LS-1-equipped fixtures.

Key Features

• Inside diameter of 0.1285 inches (Number 30 wire size) with a tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Body outside diameter of 0.3125 inches (5/16 inches) and head outside diameter of 35/64 inches
• Length under head of 3/4 inches for adequate engagement in standard jig plate thicknesses
• Steel construction hardened to 60 to 65 HRC for extended wear resistance in repetitive drilling applications
• Counterbored and head-style design with LS-1 lock screw compatibility for secure, removable installation
• Renewable bushing design allows field replacement without replacing the fixture liner

Compatibility

Compatible with LS-1 lock screws. Designed as an OEM-style replacement or standard fit for drill jigs and fixtures using SF-series slip-fixed bushings per ANSI standards.

Installation Notes

Installation is typically performed by toolmakers or machining technicians during fixture assembly or bushing replacement. Ensure the fixture liner bore is clean and free of chips before pressing or seating the bushing. Always disengage power to the drilling machine before servicing jig components. The LS-1 lock screw must be properly engaged to prevent bushing rotation or pull-out during drilling operations.