Value Collection R57700771 Coiled Spring Pin Alloy Steel

Product Description

The VALUE COLLECTION R57700771 is a coiled spring pin designed for use in mechanical assemblies requiring a reliable, self-retaining fastener. Measuring 0.125 inches in diameter and 0.625 inches in length, this pin is manufactured from 1070-1090 alloy steel with a plain finish. Coiled spring pins compress radially during installation and exert consistent outward pressure against the host bore, creating a secure fit without the need for additional locking hardware. This style of pin is a standard fastening component used by maintenance technicians, machinists, and mechanical assemblers across a wide range of industrial and equipment applications.

Coiled spring pins in this diameter and length range are commonly used in light-duty to medium-duty mechanical assemblies, including linkages, hinges, shafts, and alignment fixtures. The 0.125-inch diameter makes this pin suitable for compact assemblies with limited space for fasteners. The alloy steel construction provides adequate strength and fatigue resistance for cyclically loaded joints. This pin is sold in single-unit packaging with a minimum order quantity of 100 units, making it appropriate for procurement in production or maintenance shop inventory.

Key Features

• Coiled spring design provides radial tension against bore walls for a secure, self-retaining fit
• 0.125 inches diameter and 0.625 inches overall length for compact assembly applications
• 1070-1090 alloy steel construction offers strength and fatigue resistance
• Plain finish with no coating or plating treatment
• Inch measurement system for compatibility with standard imperial-dimensioned components
• Does not meet military specifications — suitable for commercial and industrial use

Compatibility

Designed as a standard imperial coiled spring pin for use in mechanical assemblies, linkages, shafts, and fixtures requiring a 0.125-inch diameter spring pin with a 0.625-inch overall length.

Installation Notes

Coiled spring pins are typically installed by machinists or maintenance technicians using a pin punch and hammer or a press. Ensure the receiving bore is clean and correctly sized to the pin diameter before driving the pin. The pin should be driven flush or to the required depth using a flat-ended punch sized appropriately to avoid deforming the coil. Do not use oversized punches or excessive force that may collapse the coil structure.