Value Collection MSC67704080X Taper Pin Size 5 1/4-28 Thread

Product Description

The VALUE COLLECTION MSC67704080X is an uncoated steel taper pin designed for secure, wedge-fit fastening in mechanical assemblies. Manufactured to AN386 standards from C-12L14 free-machining steel, this Size 5 pin features a 0.287-inch large-end diameter, a 0.198-inch neck diameter, and a 2-inch pin length. The 1/4-28 threaded end allows a nut to be used for positive retention, preventing the pin from backing out under vibration or load. Maximum diameter tolerance is held to 0.0013 inches for consistent fit across mating holes. Machinists, millwrights, and maintenance technicians install these pins to align or lock components on shafts, collars, and hubs.

Threaded taper pins in Size 5 are used across a wide range of industrial, OEM, and MRO applications where a removable but secure locating or locking pin is required. Common installations include shaft-to-collar connections, gear hubs, lever assemblies, and machine tool fixtures. The 1/4-28 threaded end is particularly useful in assemblies where access to the small end of the pin is limited, allowing extraction via the threaded nut rather than a punch. Suitable for both light and moderate load applications in general mechanical assembly.

Key Features

• Meets AN386 standard for taper pin dimensions and tolerances
• C-12L14 free-machining steel for consistent threading and dimensional accuracy
• 1/4-28 threaded end for nut retention and controlled extraction
• 0.0013-inch maximum diameter tolerance for reliable fit in reamed holes
• Uncoated finish suitable for use as-installed or with added corrosion protection
• Size 5 taper pin geometry with 0.287-inch large-end diameter and 2-inch length

Compatibility

Designed as an OEM-style and MRO replacement taper pin for mechanical assemblies requiring an AN386 Size 5 threaded taper pin with a 1/4-28 thread form.

Installation Notes

Threaded taper pins are installed by a machinist or millwright into a reamed taper hole sized to match the pin taper. Power down and de-energize all equipment before installation or removal. The mating hole should be reamed to the correct taper using a Size 5 taper pin reamer before driving the pin to ensure proper seating and full contact along the pin length. Thread the nut onto the 1/4-28 end after installation to secure the pin against backing out.