Wiseman HSS UNC Hexagon Die Nuts – Unified Coarse Right Hand Thread

Wiseman HSS UNC Hexagon Die Nuts are manufactured from High Speed Steel (HSS) and designed for repairing, cleaning and restoring damaged or worn external UNC (Unified National Coarse) threads. Dimensions to BS1127-5. 

These precision-engineered hexagon die nuts feature a fixed, non-adjustable design and can be operated using a suitable spanner or socket, making them particularly useful for maintenance, repair and general engineering applications.

Manufactured with a right-hand thread profile, these die nuts are suitable for restoring existing UNC threads on bolts, studs and other externally threaded components.

Key Features

• High Speed Steel (HSS) – Durable construction for reliable thread restoration and maintenance.

• UNC Thread Form – Designed for Unified National Coarse external threads.

• Right Hand Thread – Standard clockwise tightening thread direction.

• Hexagon Design – Can be operated using a suitable spanner or socket.

• Thread Repair & Restoration – Ideal for cleaning, chasing and restoring damaged or worn external threads.

• Fixed Die Nut – Non-adjustable design for consistent thread engagement.

• Uncoated Finish – Traditional HSS construction without additional surface coating.

• Professional Quality – Manufactured by Wiseman Threading Tools for engineering and maintenance applications.

Applications

Suitable for:

• Repairing damaged UNC threads on bolts and studs.

• Cleaning existing external threads.

• Restoring worn or contaminated threads.

• General engineering and workshop maintenance.

• Automotive, machinery and equipment repairs.

• Maintenance of components using imperial UNC fasteners.

Recommended Use

Select the correct UNC thread size and pitch to match the existing external thread.

Position the die nut squarely onto the thread and rotate using a suitable spanner or socket. Apply an appropriate cutting lubricant where required and avoid excessive force.

Hexagon die nuts are primarily intended for thread cleaning, chasing and restoration rather than cutting new threads from plain bar stock.

Important

• Suitable for UNC (Unified National Coarse) right-hand external threads only.

• Not compatible with UNF, metric or other thread forms.

• Non-adjustable hexagon die nut.

• Ensure the correct thread diameter and threads per inch (TPI) are selected before use.