Value Collection R57700321 Slotted Spring Pin 0.5 in 3 in

Product Description

The VALUE COLLECTION R57700321 is a slotted spring pin used to secure assembled components by providing controlled radial resistance within a bored hole. Made from 1070-1090 alloy steel with a plain finish, this pin measures 0.5 inches in diameter and 3 inches in overall length. The slotted design allows the pin to compress slightly on insertion, creating a friction fit that resists vibration-induced loosening. It is installed by maintenance technicians and machinists working on mechanical assemblies, tooling, and industrial equipment where reliable, removable fastening is required.

Slotted spring pins are a common fastening solution in mechanical assemblies across manufacturing, industrial, and maintenance applications. This pin is suited for use in shafts, linkages, hinges, and housings where a standard solid pin would require tighter tolerances. The 0.5-inch diameter and 3-inch length make it appropriate for medium-duty fastening scenarios in both light industrial and heavy equipment contexts. This part ships in a minimum order quantity of 50 units, making it suitable for shop stock, production use, or MRO replenishment.

Key Features

• Slotted design allows radial compression for friction-fit installation without adhesives
• 1070-1090 alloy steel construction provides strength and hardness suitable for mechanical fastening
• Plain finish — no coating or plating that could affect dimensional tolerance in tight bores
• 0.5 inches diameter and 3 inches length for medium-duty shaft and housing applications
• Inch system of measurement — compatible with standard imperial bore specifications
• Does not meet military specifications — intended for commercial and industrial applications

Compatibility

Designed as a standard imperial-dimension slotted spring pin for use in mechanical assemblies requiring a 0.5-inch bore diameter and up to 3 inches of pin engagement depth.

Installation Notes

Slotted spring pins are typically installed and removed by machinists or maintenance technicians using a pin punch and hammer or a press. Always ensure the receiving bore is clean and within the specified diameter tolerance before driving the pin. Inspect the pin for deformation after removal — spring pins should not be reused if the slot has closed or the body is visibly bent. Follow applicable facility safety procedures when working with pressed or driven fasteners.