

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The EAGLE CUTTING TOOL MHD-420-300-I is a metric carbon hex die sized M42 x 3.0, designed to cut external threads on rod, bolt stock, and fastener blanks. The hexagonal body seats securely in a standard die stock or tap-and-die wrench, allowing controlled thread cutting by hand. At 2.18 pounds, this is a robust tool suited for production threading and field repair work in plumbing, mechanical, and industrial maintenance applications. The M42 designation indicates a 42 mm nominal thread diameter with a 3.0 mm pitch, conforming to standard metric coarse thread profiles.
This hex die is used wherever a metric M42 x 3.0 external thread must be cut or restored. Typical applications include threading large-diameter steel rod or pipe nipples, repairing damaged threads on heavy fasteners, and production work in mechanical and industrial shops. Plumbers, pipefitters, and maintenance machinists commonly reach for this size when working with heavy-duty metric fastener stock or large-bore fittings that require a field-cut thread.
Designed as an OEM-style replacement or direct-use metric hex die for standard die stocks that accept M42 hex dies in trade and industrial threading applications.
This die is installed and operated by a licensed tradesperson or qualified machinist using a properly sized die stock or adjustable die wrench. Secure the workpiece in a vise before threading to prevent movement. Apply cutting oil liberally to the die and workpiece to reduce heat and extend die life. Back the die off periodically to clear chips and prevent thread damage.
Thanks for subscribing!
This email has been registered!