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The GIBRALTAR DIFR-500 is a quick release pin receptacle designed for secure, tool-free pin retention in mechanical assemblies and structural connections. Machined from Grade 303 stainless steel, it provides strong corrosion resistance in demanding environments. The receptacle features a diamond-shaped mounting flange with a 10-32 threaded mounting hole, a 0.75 inch receptacle diameter, and accepts a 0.5 inch diameter quick release pin. With a receptacle depth of 1.195 inches and a flange thickness of 0.1 inches, the DIFR-500 is built for precision fitment where reliable latch and release cycles are required. Licensed tradespeople and MRO technicians working with jigs, fixtures, equipment panels, and structural hardware are the primary installers.
The DIFR-500 is suited for use in industrial machinery, fabricated equipment frames, tooling fixtures, and maintenance access panels where quick pin removal is a design requirement. The diamond flange configuration allows installation in tight or rotationally constrained spaces where a round or square flange would not fit. The 1-1/8 inch center-to-center distance between mounting holes aligns with standard hardware patterns on fabricated steel and aluminum assemblies. This receptacle is typically installed in applications requiring repeated removal and reinstallation without tools.
Designed as an OEM-style replacement or new-installation receptacle for quick release pin systems requiring a 0.5 inch pin diameter and a diamond flange mount with 10-32 hardware.
Installation is typically performed by maintenance technicians, millwrights, or mechanical assemblers using standard hand tools. Power down or de-energize any equipment before installing or servicing pin receptacles on live machinery. Ensure mating surfaces are clean and flat before securing the flange to prevent misalignment that could affect pin engagement. Verify that the selected quick release pin matches the 0.5 inch receptacle diameter before assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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