Value Collection 314-4262 Round Die 1/2-20 Unf Lh Hss

Product Description

The VALUE COLLECTION 314-4262 is a round threading die used to cut external left-hand threads on cylindrical workpieces. Manufactured from high-speed steel (HSS), this die delivers the hardness and heat resistance required for production threading on steel, stainless, and non-ferrous stock. The adjustable design allows the technician to dial in thread fit tolerance for a clean, accurate thread form. It is sized for 1/2-20 UNF (Unified National Fine) thread specification, making it a common choice in mechanical assembly, automotive, and general machining applications where fine-pitch left-hand threads are required.

This die is suited for use in machine shops, maintenance facilities, and field service environments where left-hand threaded fastener connections must be fabricated or repaired. Left-hand thread profiles are standard on applications where counter-rotation would otherwise loosen a conventional right-hand fastener, such as certain spindles, turnbuckles, and specialty mechanical assemblies. The 1/2-20 UNF specification covers a broad range of light-duty to medium-duty structural and mechanical fastening scenarios. Installation is performed by machinists, toolmakers, or skilled maintenance technicians using a standard round die stock holder sized for the appropriate die outside diameter.

Key Features

• High-speed steel construction provides hardness and wear resistance for threading ferrous and non-ferrous materials
• Left-hand thread direction for counter-rotation fastening applications
• Adjustable design allows fine-tuning of thread fit tolerance
• 1/2-20 UNF thread specification for fine-pitch external threading
• Round die format fits standard round die stock holders

Compatibility

Designed as an OEM-style replacement or direct tooling option for use in any standard round die stock holder that accepts the corresponding die outside diameter for 1/2-20 UNF dies.

Installation Notes

This die is installed and operated by machinists or maintenance technicians using a round die stock holder. Ensure the workpiece is securely fixtured and properly lubricated with an appropriate cutting oil before threading. Confirm the die is seated squarely against the workpiece before applying rotational force to avoid cross-threading or die damage. Always verify thread direction requirement before use, as left-hand dies are not interchangeable with right-hand applications.