XB-21-S-500-2750
Spring Roll Pin
SAF-Holland

Roll pin style retention device used across various SAF-Holland assemblies to secure components under dynamic loading. This version is specified by VMRS 053-007-025 and falls under category 42784, signaling a family of components where rapid assembly and reliable retention are critical. The dimensions are not published here, but typical applications include hinges, linkages, and bracketry where vibration and impact require a robust retention element that remains centered under load. Benefits include quick field installation, symmetric load distribution, and straightforward replacement. The design accommodates a range of hole tolerances and work-hardening behaviors, making it forgiving in off-spec or field repair scenarios. Maintenance focuses on ensuring the pin remains fully seated, checking for wear at the hole edge, and replacing after a fixed number of cycles or signs of wear. Because no cross-reference is listed, compatibility should be confirmed against the vehicle’s maintenance manual and the specific SAF-Holland component family being serviced to avoid misfit or degraded retention.