Value Collection 314-1158 Round Die 1/2-20 Unf 1 in Od Hss

Product Description

The VALUE COLLECTION 314-1158 is a round threading die designed to cut external 1/2-20 UNF right-hand threads on rod, bolt stock, and round bar. Manufactured from high-speed steel (HSS), this die maintains cutting edge hardness under the heat generated during threading operations. The 1 inch outside diameter fits standard round die stocks and holders. An adjustable design allows the technician to dial in thread fit by opening or closing the die slightly, giving control over thread tolerance and accommodating minor variations in stock diameter. Machinists, maintenance technicians, pipefitters, and plumbers use dies like this for fabricating threaded fasteners and repairing damaged threads in the field or shop.

This die is suited for threading mild steel, aluminum, brass, and similar machinable materials in both shop and field environments. The 1/2-20 UNF thread form is common in automotive, mechanical, and light industrial assemblies where a fine thread pitch provides greater holding strength and finer adjustment than coarse-thread equivalents. The 1 inch OD makes it compatible with standard round die holders sized for 1 inch dies. Right-hand thread direction is standard for the vast majority of fastener applications.

Key Features

• High-speed steel construction resists heat buildup during threading cuts
• Adjustable design allows fine-tuning of thread fit and tolerance
• 1/2-20 UNF thread specification for fine-thread fastener fabrication and repair
• 1 inch outside diameter fits standard round die stocks
• Right-hand thread direction matches standard fastener convention

Compatibility

Designed for use in standard round die holders and die stocks that accept 1 inch OD dies. Suitable for cutting 1/2-20 UNF external threads on machinable metals including steel, aluminum, and brass.

Installation Notes

Secure the die firmly in a round die stock before use, ensuring the set screw engages the adjustment slot. Apply cutting oil generously to the workpiece and die during threading to extend tool life and improve thread quality. Back off the die periodically to clear chips, especially when threading deeper lengths. Inspect the die for chipping or wear before each use, and replace if cutting edges are damaged.