Value Collection MSC67703801X Threaded Taper Pin Size 4

Product Description

The VALUE COLLECTION MSC67703801X is a Size 4 externally threaded taper pin manufactured from C-12L14 steel in an uncoated finish. Taper pins are precision-fit cylindrical fasteners used to secure hubs, collars, and mechanical components to shafts or through aligned bores, preventing rotational or axial movement. This pin features a 1/4-28 threaded end that accepts a nut for positive retention, a large end diameter of 0.248 inches, a neck diameter of 0.198 inches, and a pin length of 1.5 inches. It conforms to AN386 standards. Machinists, maintenance technicians, and assembly professionals install these pins where a reliable, removable shaft-to-component connection is required.

This threaded taper pin is suited for general mechanical assembly, tooling fixtures, and machine maintenance applications where AN386-standard taper pins are specified. The threaded end allows controlled extraction with standard tooling, making it a practical choice for assemblies that require periodic disassembly or realignment. The C-12L14 free-machining steel grade offers good machinability and consistent dimensional accuracy, appropriate for light- to medium-duty industrial and maintenance environments.

Key Features

• AN386-standard taper pin geometry for interchangeable fitment in conforming bores
• 1/4-28 threaded end enables nut-secured retention and controlled extraction
• Large end diameter of 0.248 inches with a maximum diameter tolerance of 0.0013 inches
• Neck diameter of 0.198 inches for clearance fit at the threaded transition
• C-12L14 free-machining steel grade for consistent dimensional accuracy
• Uncoated finish; pin length of 1.5 inches

Compatibility

Designed as an AN386-standard Size 4 threaded taper pin for use in any application or fixture specifying AN386 taper pin geometry with a 1/4-28 threaded end.

Installation Notes

Threaded taper pins are typically installed by machinists or maintenance technicians using a pin driver or press to seat the pin fully into a reamed taper bore before threading on the retaining nut. Ensure the mating bore is reamed to the correct AN386 Size 4 taper before installation, as forcing an oversized pin can damage the bore or component. Always de-energize and lock out any machinery before servicing shaft-mounted components. A proper taper pin reamer should be used to size the bore; do not use drill bits as a substitute.