Gibraltar 9663121 Press Fit Rest Button 52100 Steel

Product Description

The GIBRALTAR 9663121 is a press fit rest button designed for use in precision workholding, fixture, and tooling applications. This button provides a hardened, stable contact surface for positioning and supporting workpieces on jigs, fixtures, and machining setups. Constructed from 52100 steel with a black oxide coating, the 9663121 offers corrosion resistance and surface hardness suited for production shop environments. Key dimensions include an overall length of 0.969 inches, an outside diameter of 0.5 inches, a head height of 0.5 inches, and a pin diameter of 0.251 inches. The unground press fit design allows for straightforward installation without secondary grinding. Machinists, tool and die makers, and fixture builders are the primary installers.

This rest button is intended for use in metalworking and machining environments where accurate workpiece location is required. It is suited for installation in drill jigs, milling fixtures, welding fixtures, and inspection plates. The press fit retention method seats the button securely into a prepared hole in the fixture body without additional fasteners. Applications include both prototype and production tooling where a low-profile hardened rest point is needed to maintain consistent part positioning across multiple cycles.

Key Features

• 52100 steel construction for high hardness and wear resistance in tooling applications
• Black oxide coating provides corrosion resistance and reduces light reflection on the work surface
• Unground press fit type for direct installation into a prepared bore without post-installation grinding
• 0.969 inch overall length with 0.5 inch head height for a low-profile seating surface
• 0.251 inch pin diameter for consistent, repeatable press fit retention in fixture bores
• Sold individually, suitable for single-point replacement or new fixture builds

Compatibility

Designed as an OEM-style replacement or new-build component for precision workholding fixtures, drill jigs, and tooling plates requiring a press fit hardened rest button with a 0.251 inch pin diameter.

Installation Notes

Installation is performed by tool and die makers or machinist-level trades using a press or arbor press to drive the pin into a properly sized and toleranced bore in the fixture body. The receiving hole should be prepared to the appropriate press fit tolerance for the 0.251 inch pin diameter before installation. Ensure the fixture is secured and supported during pressing to prevent distortion. Removal requires pressing out from the reverse side; avoid impact methods that could damage the bore or surrounding fixture material.