Cle-line C66706 Two Piece Adjustable Die 3/8-24 Unf

Product Description

The CLE-LINE C66706 is a two-piece adjustable threading die designed to cut 3/8-24 UNF external threads. The split-die design allows the user to fine-tune thread fit through incremental diameter adjustment, making it suitable for both initial cutting and chasing existing threads. Constructed from carbon steel, this die provides the hardness and wear resistance required for production and maintenance threading work on ferrous and non-ferrous materials. It is sized for Collet Number 1.5 and is intended for use in a standard adjustable die stock. Machinists, maintenance technicians, and pipefitters working with fine unified threads will find this a reliable hand-threading tool.

This die is used wherever 3/8-24 UNF threads need to be cut or restored on bolts, rod stock, and threaded fasteners. The two-piece adjustable format is common in job-shop, maintenance, and field-service environments where thread fit tolerances need to be dialed in without swapping tools. The fine 24 TPI pitch suits applications requiring tighter clamp loads or use in thinner material cross-sections compared to coarse-thread equivalents.

Key Features

• Two-piece adjustable design allows incremental thread diameter adjustment for precise fit
• Cuts 3/8-24 UNF external threads to unified fine thread standard
• Carbon steel construction for hardness and durability in threading applications
• Collet Number 1.5 sizing fits compatible adjustable die stocks
• Lightweight at 0.08 pounds, suitable for portable and bench use

Compatibility

Designed as an OEM-style replacement or standard-issue threading die for use in adjustable die stocks accepting Collet Number 1.5 dies sized for 3/8-24 UNF thread cutting.

Installation Notes

This die is installed and adjusted by a machinist or maintenance technician using a compatible adjustable die stock. Before use, secure the workpiece firmly and apply cutting oil to reduce heat and extend die life. Adjust the die set screws incrementally to achieve the desired thread class fit, and always take a test pass before committing to final thread depth. Inspect the die for wear or chipping before each use.