Threading die FANAR 3/8" for cutting external threads, model N1-121001-4129

FANAR 3/8" threading die (model N1-121001-4129) is a hand-operable tool for cutting or restoring external threads on 3/8" diameter fasteners. Designed to be mounted in a compatible die stock or holder, this die produces a defined thread profile for repair, maintenance and fabrication tasks in metalworking and plumbing. The product is intended for manual use in workshops or on-site service operations where accurate rethreading or finishing of external threads is required.

Advantages

The FANAR 3/8" threading die provides consistent thread geometry and reliable cutting performance when used with the correct die holder and cutting lubricant. Its construction ensures repeated accuracy for thread restoration tasks and extends the service life of bolts and studs by enabling precise repair rather than replacement. The die is suitable for a range of ferrous and non-ferrous materials typically encountered in mechanical and plumbing repairs.

Suitable for

• Repairing damaged external threads on bolts, studs and rods
• Finishing newly cut external threads to required tolerance
• On-site maintenance and workshop thread restoration
• Plumbing fittings and general metalworking applications

Key specifications

• Thread diameter: 3/8" (external)
• Tool type: hand-operated threading die for external threads
• Compatibility: designed for use with standard die stocks/holders
• Application materials: suitable for common ferrous and non-ferrous metals
• Typical use: cutting and restoring external threads in maintenance and fabrication

How to use

Mount the threading die securely in a compatible die stock or holder, ensuring correct orientation of the die's cutting face. Apply appropriate cutting lubricant to the workpiece and start threading by aligning the die squarely with the fastener and turning the holder with steady, even pressure. Reverse periodically to break chips and clear swarf, and continue until the required thread length and finish are achieved. After cutting, clean chips and apply corrosion protection to the threaded area as needed.

Usage recommendations

Use appropriate personal protective equipment, select a die stock that matches the die size, and apply cutting fluid for cleaner cuts and longer tool life. Avoid forcing the die on misaligned or severely damaged fasteners; consider first reaming or using a tapered guide to restore alignment.