Value Collection -34844-1X Taper Pin Size 4 Uncoated Steel

Product Description

The VALUE COLLECTION -34844-1X is a Size 4 taper pin manufactured from C-12L14 steel in an uncoated finish. Taper pins are precision-machined fasteners used to locate, align, or lock machine components — such as hubs, collars, and gears — onto shafts. This pin measures 4 inches overall length with a small end diameter of 0.1668 inches and a large end diameter of 0.25 inches. The tapered geometry creates a self-locking fit when driven into a reamed hole, making it a reliable choice for assemblies that require repeatable disassembly and reassembly. Machinists, millwrights, and maintenance technicians are the typical installers in industrial and manufacturing environments.

This taper pin is suited for general industrial machine assembly applications where precise component alignment and positive locking are required. It is commonly used in shaft-to-hub connections, jig and fixture construction, and production machinery maintenance. The C-12L14 free-machining steel grade offers good machinability and consistent dimensional tolerances. This pin conforms to ANSI/ASME B18.8.2 standards, making it interchangeable with other compliant Size 4 taper pins used in standard reamed holes.

Key Features

• Size 4 taper pin per ANSI/ASME B18.8.2 standard for dimensional interchangeability
• 4 inches overall length suitable for moderate-depth shaft and hub assemblies
• Small end diameter of 0.1668 inches and large end diameter of 0.25 inches
• C-12L14 free-machining steel construction with diameter tolerance range of -0.0007 to +0.0013 inches
• Uncoated finish — ready for installation without additional surface treatment
• Self-locking taper geometry eliminates the need for adhesives or additional fasteners in most applications

Compatibility

Designed as an ANSI/ASME B18.8.2-compliant Size 4 taper pin, compatible with standard Size 4 reamed taper pin holes in industrial machine assemblies.

Installation Notes

Taper pins are installed by machinists or millwrights using a reamed hole sized to match the pin taper — never force a taper pin into a drilled-only hole. De-energize and lock out all equipment before beginning installation or removal. Drive the pin from the small end using a pin punch and hammer; remove by driving from the large end. Inspect the reamed hole for wear or out-of-round condition before reinstalling a taper pin in a previously used assembly.