Gibraltar 85549921 Counterbored Rest Button Steel

Product Description

The GIBRALTAR 85549921 is a counterbored rest button machined from heat treated steel with a black oxide finish. Rest buttons are precision workholding components used in jigs, fixtures, and tooling setups to provide a stable, repeatable seating surface for workpieces. This button measures 0.75 inches overall length and 0.625 inches outside diameter. The counterbored design allows for flush or recessed mounting, keeping the seating surface clean and the mounting hardware below the contact face. Installers and toolmakers choose heat treated steel buttons for their resistance to wear and deformation under clamping and locating loads.

This rest button is suited for use in precision machining fixtures, drill jigs, assembly fixtures, and inspection tooling in industrial and manufacturing environments. The black oxide coating provides mild corrosion resistance and reduces light reflection on the working surface. It is typically installed by toolmakers, machinists, or fixture builders assembling or maintaining production tooling. The compact 0.75-inch profile fits confined fixture layouts where space is limited.

Key Features

• Counterbored design allows recessed mounting to keep hardware below the seating surface
• Heat treated steel construction for wear and deformation resistance under load
• Black oxide finish for mild corrosion resistance and reduced surface glare
• 0.75 inches overall length suits compact fixture and jig applications
• 0.625 inches outside diameter for consistent, repeatable workpiece contact

Compatibility

Designed as an OEM-style replacement or new-build component for standard industrial workholding fixtures, drill jigs, and assembly tooling that require precision rest button seating surfaces.

Installation Notes

Rest buttons are typically installed by toolmakers or machinists during fixture fabrication or maintenance. Ensure the mounting bore is clean and dimensionally correct before pressing or fastening the button in place. De-energize or lock out any automated equipment before servicing live production fixtures. Follow your facility safety and tooling maintenance procedures when replacing worn or damaged buttons.