Value Collection R57900643 Slotted Spring Pin 12mm 4mm Steel

Product Description

The VALUE COLLECTION R57900643 is a metric slotted spring pin designed for fastening and alignment applications in mechanical assemblies. Manufactured from 1070-1080 grade steel with a plain finish, this pin measures 12 mm in overall length and 4 mm in diameter. The slotted design allows the pin to compress during installation and exert radial force against the bore wall, creating a secure, vibration-resistant fit without the need for adhesives or threading. Machinists, maintenance technicians, and assembly mechanics use slotted spring pins as economical, reliable fasteners in a wide range of industrial and mechanical applications.

This pin is suited for metric assemblies requiring a 4 mm bore diameter and a 12 mm pin length. Common applications include shaft-to-hub connections, hinge pivots, gear and pulley retention, and alignment of mating components in equipment, machinery, and fabricated assemblies. The plain finish is appropriate for interior or protected installations where additional corrosion protection is not required. Sold individually per order increment, with a minimum order quantity of 100 pieces.

Key Features

• Slotted design compresses on installation for a secure radial interference fit
• 1070-1080 grade steel construction for reliable tensile and shear strength
• 12 mm overall length with 4 mm diameter — standard metric sizing
• Plain finish for use in dry or protected interior environments
• Metric system of measurement; does not meet military specifications

Compatibility

Designed as a standard metric slotted spring pin for use in any mechanical assembly requiring a 4 mm bore diameter and 12 mm pin length.

Installation Notes

Slotted spring pins are typically installed using a pin punch and hammer or an arbor press; always support the workpiece to prevent damage to surrounding components. Power down and de-energize any equipment before servicing assemblies containing spring pins. Ensure the bore diameter matches the nominal pin diameter within standard tolerance before driving the pin to avoid bore damage or pin deformation. Removal is performed with a punch sized to the pin diameter driven from the appropriate end.