Value Collection 34844X Taper Pin Size 4 3in Steel

Product Description

The VALUE COLLECTION 34844X is a Size 4 taper pin machined from C-12L14 carbon steel and supplied in an uncoated finish. It measures 3 inches overall length, with a small end diameter of 0.1876 inches and a large end diameter of 0.25 inches. The pin is manufactured to ANSI/ASME B18.8.2 standards, ensuring dimensional accuracy within a minimum diameter tolerance of -0.0007 inches and a maximum diameter tolerance of 0.0013 inches. Taper pins are used to secure hubs, collars, and mating components on shafts by driving the tapered body into a reamed hole, creating a tight mechanical lock without fasteners.

This taper pin is suited for general-purpose industrial and mechanical assembly applications where precise, removable shaft-to-hub connections are required. Typical use cases include machine tools, conveyor assemblies, gearboxes, and mechanical linkages where alignment and load transfer between a rotating shaft and a mounted component must be maintained. Installation is performed by machinists, millwrights, and maintenance mechanics working on rotating equipment and precision assemblies. The C-12L14 free-machining steel grade is well suited for environments where moderate strength and good machinability are priorities.

Key Features

• Size 4 taper pin per ANSI/ASME B18.8.2 dimensional standards
• C-12L14 free-machining carbon steel for good machinability and consistent tolerance control
• Small end diameter of 0.1876 inches, large end diameter of 0.25 inches
• 3 inches overall length suitable for standard hub and collar applications
• Uncoated finish — no coating thickness to account for in critical bore fits
• Tight diameter tolerance range (-0.0007 inches to +0.0013 inches) for reliable press fit in reamed holes

Compatibility

Designed as an ANSI/ASME B18.8.2-compliant Size 4 taper pin for use in standard tapered-hole applications requiring a 3-inch OAL pin with a 0.25-inch large end diameter.

Installation Notes

Taper pins are installed by machinists and millwrights using a taper pin reamer to prepare a correctly sized hole, followed by driving the pin with a hammer or press until seated. Always de-energize and lock out rotating equipment before servicing shaft-mounted components. Remove taper pins by driving from the small end using a pin punch of appropriate diameter. Do not reuse a taper pin that shows deformation, galling, or wear at the contact surfaces.