Value Collection R57700721 Slotted Spring Pin 18-8 Ss

Product Description

The VALUE COLLECTION R57700721 is a slotted spring pin manufactured from 18-8 stainless steel. Slotted spring pins, also called roll pins or tension pins, are cylindrical fasteners with a lengthwise slot that allows the pin to compress during installation and exert a constant outward spring force against the host bore. This self-retaining action locks the pin in place without adhesives or secondary fasteners. At 0.5 inches in overall length and 0.125 inches in diameter, the R57700721 suits tight assemblies where a compact retention fastener is required. Machinists, maintenance technicians, and assembly professionals install these pins in production and repair environments across a wide range of industrial applications.

Slotted spring pins in this size range see use in light mechanical assemblies, shaft-to-hub connections, hinge pivots, and alignment applications. The 18-8 stainless steel construction provides corrosion resistance suitable for moderately wet or chemically exposed environments, including food-processing equipment, marine hardware, and general industrial machinery. This pin is sold as a single unit, with a minimum order quantity of 100 pieces, making it appropriate for production runs and MRO stocking programs.

Key Features

• 18-8 stainless steel construction provides corrosion and oxidation resistance
• Slotted design allows radial compression for self-retaining fit in drilled bores
• 0.5 inch overall length suits compact mechanical assemblies
• 0.125 inch diameter for use in standard 1/8 inch pin bores
• No military specification — suitable for commercial and industrial applications
• Inch measurement system; consistent with standard fractional tooling

Compatibility

Designed as a standard slotted spring pin for use in any commercial or industrial assembly requiring a 0.125 inch diameter, 0.5 inch long retention pin in a drilled or reamed bore.

Installation Notes

Slotted spring pins are typically driven into a drilled bore using a pin punch and hammer or an arbor press; the bore diameter should match the nominal pin diameter per applicable tolerance standards. Always verify bore depth before installation to prevent the pin from bottoming out or protruding beyond the assembly face. Wear appropriate eye protection when driving pins. Removal requires a pin punch sized to fit through the bore from the opposite side.