Value Collection MSC67706929X Threaded Taper Pin Size 8

Product Description

The VALUE COLLECTION MSC67706929X is a Size 8 threaded taper pin machined from 303 grade 18-8 stainless steel with a passivated finish. At 4 inches in length with a large end diameter of 0.49 inches and a neck diameter of 0.368 inches, this pin provides a secure, removable method of locking hubs, collars, and levers to shafts in mechanical assemblies. The passivated surface treatment enhances corrosion resistance without altering dimensional tolerances. With a maximum diameter tolerance of 0.0013 inches, this pin meets AN386 standards and is suited for applications where precise fit and corrosion resistance are required. Machinists, maintenance technicians, and MRO professionals typically install this fastener in industrial and aerospace-adjacent mechanical assemblies.

This threaded taper pin is designed for use in mechanical assemblies where a standard taper pin needs the added retention of a threaded end and nut. Typical applications include securing shaft-mounted components such as couplings, sprockets, and gear hubs in industrial machinery, pumps, and drive systems. The stainless steel construction makes it well suited for environments with moisture exposure or mild chemical contact. The AN386 standard rating makes it appropriate for defense and industrial specification work where documented material and dimensional compliance is required.

Key Features

• Size 8 taper pin with 4-inch pin length and 0.49-inch large end diameter
• Threaded end sized 7/16-20 for positive retention with a mating nut
• 303 grade 18-8 stainless steel construction for corrosion resistance in wet or chemically exposed environments
• Passivated finish removes free iron and improves surface oxide layer without altering dimensions
• Maximum diameter tolerance of 0.0013 inches ensures consistent, precise fit in reamed taper holes
• Meets AN386 standard for documented dimensional and material compliance

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for Size 8 threaded taper pin applications conforming to AN386 requirements in industrial, MRO, and specification-grade mechanical assemblies.

Installation Notes

Threaded taper pins are installed by machinists or maintenance technicians using a properly reamed taper hole sized to match the pin taper. The assembly should be fully de-energized and depressurized before disassembly or installation. Drive the pin into the reamed hole using a pin driver until seated, then secure the threaded end with a mating nut to prevent backing out. Avoid hammering directly on the threaded end to prevent thread damage.