Value Collection R57700287 Slotted Spring Pin 0.375 in 4 in

Product Description

The VALUE COLLECTION R57700287 is a slotted spring pin designed for use in mechanical assemblies requiring a reliable, radially compressible fastener. Measuring 0.375 inches in diameter and 4 inches in length, this pin is manufactured from 1070-1090 alloy steel with a plain finish. The slotted design allows the pin to compress on insertion and exert a constant outward spring force against the bore wall, resisting loosening from vibration or shock loads. It is installed by maintenance technicians and industrial mechanics in production, repair, and field service applications.

This slotted spring pin is suited for general industrial and mechanical applications where a positive retention fastener is needed in a through-hole or blind assembly. Typical use cases include shaft-to-hub connections, linkage assemblies, and alignment fixtures across manufacturing, agricultural equipment, and general machinery. The 3/8-inch fractional diameter and 4-inch length make it appropriate for medium-duty structural and mechanical retention tasks where alloy steel strength is required.

Key Features

• Slotted spring pin design provides radial compression and consistent bore engagement
• 1070-1090 alloy steel construction delivers high strength and fatigue resistance
• 0.375 inches (3/8 inch) diameter with 4 inches overall length
• Plain finish suitable for standard environmental conditions
• Inch system of measurement for compatibility with standard U.S. tooling and drawings
• Does not meet military specifications — intended for commercial and industrial use

Compatibility

Designed as a standard slotted spring pin for general industrial mechanical assemblies requiring a 0.375-inch diameter, 4-inch length alloy steel retention pin in inch-dimensioned applications.

Installation Notes

Slotted spring pins are installed using a pin punch and hammer or a hydraulic press, depending on bore fit and assembly requirements. Always de-energize and lock out equipment before servicing any assembly that includes drive or retention pins. Ensure bore diameter and depth are within tolerance before driving the pin to prevent bore damage or pin shear. Removal is performed with a punch of appropriate diameter applied to the pin end.