Sutton M4400500 M5 x 0.8 Metric Coarse Die Nut, 18 mm AF - Carbon Alloy Steel

The Sutton M440 is a carbon alloy steel hexagon die nut for cleaning and resizing existing damaged metric coarse threads. It comes in 17 sizes, M5 to M36, with hex sizes from 18 to 70 mm AF, and can be turned with a wrench or socket where space is limited.

The hexagon die is best suited for maintenance and repair work. Because the die can be used with a wrench or socket, it works in limited space. Carbon alloy steel threading tools are not suitable for precision, safety or critical threads: they are for general purpose and DIY use only. Applications include DIY, trade, automotive, plumbing, metalworking and MRO work.

Where this product is used

• Cleaning and resizing existing damaged metric coarse threads.
• Maintenance and repair work.
• Threading in limited space with a wrench or socket.
• General purpose and DIY work where a precision thread is not required.
• Applications include DIY, trade, automotive, plumbing, metalworking and MRO work.

Design features

• Hexagon die: best suited for maintenance and repair work.
• Limited space: the die can be used with a wrench or socket.
• Designed for cleaning and resizing existing damaged threads.
• Carbon alloy steel: suitable for general purpose and DIY use only.

Sizes and item numbers

Hex size is across flats (AF): use a wrench or socket of the same size.

Using the die nut

• Clean dirt and rust from the damaged thread before starting.
• Start the die square on the thread, turning forward and backing off regularly to break the chip.
• Use a cutting fluid suited to the material being threaded.
• Die nuts are designed to clean and resize existing threads. For a new thread on plain stock, use a button die from the threading dies and sets range.
• Use for general purpose and DIY threads only.

Key specifications

Related products

Related Sutton threading tools: M441 metric fine hexagon die nuts and M454 SDN1 16 piece metric die nut set. Browse threading dies and sets and threading tools.