Value Collection MSC67703884X Threaded Taper Pin Size 4

Product Description

The VALUE COLLECTION MSC67703884X is a Size 4 threaded taper pin machined from C-12L14 steel with an uncoated finish. It features a 1/4-28 threaded end for positive retention and a large-end diameter of 0.248 inches with a maximum diameter tolerance of 0.0013 inches. The pin measures 2.5 inches in overall length and conforms to AN386 standards. This type of fastener is used to locate, align, or lock mating components in mechanical assemblies where disassembly and reassembly are required without loss of position accuracy. Installation is performed by machinists, millwrights, and maintenance technicians.

Threaded taper pins are commonly installed in shafts, hubs, collars, and machinery frames in both light industrial and heavy industrial settings. The 1/4-28 threaded end allows a standard nut to pull the pin securely into a tapered hole or to facilitate controlled extraction without driving tools. The AN386 rating indicates compliance with established aerospace and industrial fastener standards, making this pin suitable for precision alignment and load-transfer applications in demanding environments.

Key Features

• Size 4 taper pin profile for standard tapered-hole applications
• Large-end diameter of 0.248 inches with tight tolerance of 0.0013 inches for precise fitment
• 1/4-28 threaded end for nut-driven installation and controlled extraction
• C-12L14 free-machining steel construction for consistent surface finish and dimensional accuracy
• Uncoated finish suitable for environments where secondary coating or plating is applied in the field
• Conforms to AN386 standard

Compatibility

Designed as an OEM-style replacement or production fastener for machinery and mechanical assemblies requiring Size 4 tapered holes with 1/4-28 threaded-end taper pins per AN386.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a tapered reamer to prepare the mating hole before driving the pin. Always de-energize and lock out equipment before servicing any assembly that includes taper pins. Use the threaded end and a standard nut to draw the pin fully into position rather than striking the large end directly, which can deform the pin head. Follow applicable machinery safety standards and the equipment manufacturer's assembly procedures.