Value Collection MSC67705129X Threaded Taper Pin Size 8

Product Description

The VALUE COLLECTION MSC67705129X is a Size 8 threaded taper pin machined from C-12L14 free-machining steel and left uncoated. It features a 7/16-20 threaded end that accepts a nut to pull the pin into a tapered hole and lock mating components securely against rotation or axial movement. The large end diameter measures 0.49 inches and the pin body extends 2.75 inches in length. Machinists, maintenance technicians, and mechanical assemblers use this fastener where a standard straight pin would not provide adequate clamping force or where the assembly requires frequent disassembly without pin damage.

This taper pin is suited for industrial machinery, agricultural equipment, power transmission assemblies, and general mechanical fabrication where positive shaft-to-hub or shaft-to-collar retention is required. The threaded design simplifies both installation and removal compared to plain taper pins, making it a practical choice in maintenance-heavy environments. It conforms to AN386 standards, ensuring dimensional consistency for aerospace-originated and precision mechanical applications.

Key Features

• Size 8 taper pin with 0.49-inch large end diameter for positive interference fit in matching reamed holes
• 7/16-20 threaded end allows nut-driven installation and controlled removal without impact tools
• C-12L14 free-machining steel construction offers consistent dimensional accuracy and good machinability
• Uncoated finish suitable for applications where plating or coating is applied separately or not required
• Meets AN386 standard for dimensional and tolerance conformance
• Maximum diameter tolerance of 0.0013 inches ensures reliable fit in precision-reamed bores

Compatibility

Designed as a standard AN386-compliant Size 8 threaded taper pin for use in precision-reamed tapered holes in mechanical assemblies requiring shaft-to-hub or component-to-component locking.

Installation Notes

Threaded taper pins are installed by a machinist or mechanical technician into a hole reamed to the correct taper using a matched taper reamer. Always de-energize and lock out the machine before installing or removing any shaft fastener. Thread a nut onto the 7/16-20 end after insertion and tighten to draw the pin fully into the tapered bore; do not drive the pin with a hammer after the threaded nut is engaged. For removal, back off the nut and use a pin punch from the small end only.