Gibraltar 646490-G Press Fit Rest Button 1in Od Black Oxide

Product Description

The GIBRALTAR 646490-G is a ground press fit rest button made from low carbon steel with a black oxide finish. It is designed to seat firmly into a bored hole via press fit, providing a hardened, stable rest surface in jigs, fixtures, and workholding setups. The button features a 1 inch outside diameter, a 1.219 inch overall length, a 0.5 inch head height, and a 0.626 inch pin diameter. Machinists, tool and die makers, and fixture builders install these components during machine tool setup and production fixture fabrication.

This rest button is suited for use in precision machining environments where a repeatable, wear-resistant contact surface is required. It fits into ground or reamed bores and is appropriate for both production and prototype jig and fixture applications. The black oxide coating provides mild corrosion resistance for shop-floor conditions. Individual unit packaging makes it suitable for single-piece replacement or low-volume fixture builds.

Key Features

• Ground press fit construction for precise bore seating and repeatable positioning
• Low carbon steel body with black oxide finish for corrosion resistance in shop environments
• 1 inch outside diameter with 0.626 inch pin diameter for positive press fit engagement
• 0.5 inch head height provides a stable, low-profile rest surface
• 1.219 inch overall length accommodates standard fixture plate thickness ranges

Compatibility

Designed as an OEM-style replacement or direct fitment component for precision jigs and fixtures requiring a ground press fit rest button with a 1 inch outside diameter and 0.626 inch pin diameter.

Installation Notes

Installation is performed by machinists or tool and die professionals using a press or arbor press to drive the pin into a reamed or ground bore. The bore should be machined to the appropriate tolerance for a press fit prior to installation. Do not hammer the button directly on the head surface, as this may damage the ground contact face. No special certifications are required for installation, but standard shop safety practices apply.