Value Collection MSC67703769X Threaded Taper Pin Size 4

Product Description

The VALUE COLLECTION MSC67703769X is a Size 4 externally threaded taper pin manufactured from C-12L14 steel with an uncoated finish. It features a large end diameter of 0.248 inches, a neck diameter of 0.198 inches, and a pin length of 1.25 inches. The 1/4-28 threaded end accepts a nut to secure the pin against pullout, making it suitable for precision alignment and retention of assemblies subject to vibration or axial loads. Machinists, maintenance technicians, and mechanical assemblers install this fastener where repeatable, removable alignment is required in shaft-to-hub or component-to-component connections.

This threaded taper pin is used in light to medium-duty mechanical assemblies across industrial, aerospace, and general manufacturing applications. The 1/4-28 thread conforms to AN386 standards, making it a recognized fastener type in aerospace and military maintenance environments. It is suited for manual assembly work where controlled disassembly and repositioning of mating components is part of the service procedure.

Key Features

• Size 4 taper pin with 0.248 inch large end diameter for precise hole fitment
• 1/4-28 threaded end for positive nut retention and pullout resistance
• C-12L14 free-machining steel for consistent dimensional accuracy
• Uncoated finish compatible with post-installation plating or treatment if required
• Meets AN386 standard for use in aerospace and military maintenance applications
• Maximum diameter tolerance of 0.0013 inches for controlled interference fit

Compatibility

Designed as a standard AN386-compliant Size 4 threaded taper pin for use in any application requiring a 1/4-28 threaded taper pin with a 0.248 inch large end diameter.

Installation Notes

Installation is performed by machinist or maintenance technician using a pin driver or press to seat the taper into a reamed taper hole; the hole must be properly reamed to the correct taper before installation. Thread the nut onto the 1/4-28 end after seating to lock the pin in place and prevent withdrawal. Ensure all connected machinery or power sources are de-energized or locked out before servicing any assembly containing taper pins. Do not reuse a taper pin that has been driven into a worn or oversized hole, as loss of fit will compromise joint integrity.