Lang 972M 40 Pc Tap Die Set Unc Unf Metric Carbon Steel

Product Description

The LANG 972M is a 40-piece tap and die set built for threading, re-threading, and thread repair work across inch and metric fastener standards. The set covers UNC, UNF, Metric Coarse, and Metric Fine thread forms, with taps ranging from 1/4-20 to 9/16-18 inch and M6 x 1.00 to M12 x 1.75 metric. Dies span 1/4-20 to 5/8-18 inch and M6 x 1.00 to M12 x 1.75 metric. All taps and dies are carbon steel construction. A metric rethread file is included. The set stores in a plastic carry case and weighs 4.25 pounds. It is well suited to HVAC techs, plumbers, electricians, and general mechanical tradespeople who need a broad thread range in a single kit.

This set is designed for shops and field technicians who regularly work with both SAE and metric fasteners. The wide thread range covers the most common sizes encountered in HVAC equipment, refrigeration components, plumbing fixtures, and electrical enclosures. With 7 taps and a matching die selection across four thread standards, a single kit handles the majority of thread repair and thread-cutting tasks on the job or at the bench. The included metric rethread file adds a restoring option for damaged external threads without cutting new material.

Key Features

• 40-piece set covering UNC, UNF, Metric Coarse, and Metric Fine thread standards
• Inch taps: 1/4-20 through 9/16-18; metric taps: M6 x 1.00 through M12 x 1.75
• Inch dies: 1/4-20 through 5/8-18; metric dies: M6 x 1.00 through M12 x 1.75
• Hex die shape for use with standard wrenches — no special die stock required
• Carbon steel taps and dies for general-purpose threading on mild steel, aluminum, and soft alloys
• Includes metric rethread file for external thread restoration
• Organized plastic carry case for storage and field transport

Compatibility

Designed as a general-purpose tap and die set compatible with standard hex die wrenches and tap handle drivers. Die thread sizes included: 1/2-13, 1/2-20, 1/4-20, 1/4-28, 3/8-16, 3/8-24, 5/16-18, 5/16-24, 5/8-11, 5/8-18, 7/16-14, 7/16-20, 9/16-12, 9/16-18 inch; M10 x 1.00, M12 x 1.25, M12 x 1.50, M12 x 1.75, M6 x 1.00, M8 x 1.25 metric.

Installation Notes

Use appropriate cutting fluid when tapping or threading to extend tool life and produce cleaner threads, especially in steel. Always back the tap out periodically to clear chips and prevent binding or breakage. Power down and de-energize any equipment before performing thread repair work on electrical enclosures or mechanical assemblies. Inspect worn or damaged threads before cutting to determine whether re-threading or fastener replacement is the correct repair path.