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The VALUE COLLECTION R57900637 is a slotted spring pin designed for use in mechanical assemblies requiring a compressed, flexible fastener that seats securely under radial tension. Manufactured from Grade 1070-1080 steel with a plain finish, this pin measures 4mm in diameter and 6mm in length. The slotted design allows the pin to compress during insertion and exert outward pressure against the host bore, resisting vibration and shock loads without permanent deformation. It is installed by machinists, maintenance technicians, and assembly workers in production and repair environments.
Slotted spring pins of this size are commonly used in light- to medium-duty mechanical assemblies, including linkage connections, gear and shaft retention, and pivot points in industrial equipment. The 4mm by 6mm profile suits compact assemblies where space is limited and a reliable, reusable retention method is needed. Suitable for both original equipment assembly and field repair applications across a broad range of industries.
Designed as a standard slotted spring pin for use in any mechanical assembly with a properly sized 4mm bore requiring a compressed retention pin per common engineering standards.
Slotted spring pins are installed using a pin punch and hammer or an arbor press — never drive with impact directly on the pin face without a properly sized punch, as this can collapse the slot unevenly. Ensure the receiving bore diameter matches the nominal pin diameter per design tolerances before installation. De-energize and lock out any machinery before servicing assemblies containing spring pins. Follow applicable facility safety and mechanical assembly procedures during installation and removal.
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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