Die Nuts | McMaster-Carr

Clamp these dies around your workpiece, so you can start thread repair anywhere along the length of a bolt, stud, or rod. They're hex shaped for use with conventional wrenches.

Pipe and Conduit Thread Repairing Dies

Renew rusted and damaged pipe and conduit threads.

Bearing-Locknut Shaft Thread Repairing Dies

Clean and restore the fine threads on power transmission shafts that are used with bearing locknuts. Dies are sized according to the American Bearing Manufacturer's Association (ABMA).

Acme Thread Repairing Dies

Repair the broad, square threads on Acme threaded studs and rods. These dies are for general purpose Acme threads with a Class 2G thread fit.

External Screw, Pipe, and Conduit Thread Repairing Tools

External Screw, Pipe, and
Conduit Thread Repairing Tools

Slide over the end of threaded rod, pipe, and conduit to the area where threads are damaged, then tighten and rotate to repair threads.

Side-Grip External Screw, Pipe, and
Conduit Thread Repairing Tools

Clamp onto threaded rod, pipe, and conduit from the side to repair threads in tight spaces and where threaded ends are not exposed.

External Thread Repairing Files

External Screw, Pipe, and
Conduit Thread Repairing Files

Restore any size screw, pipe, and conduit threads.

External Screw, Pipe, and Conduit
Thread Repairing File Sets

Four or six files and four handles are included in these sets.

External Screw Thread Repairing Files

Repair rusted and damaged threads on any diameter bolt, stud, or rod.

External Pipe and Conduit Thread Repairing Files

One file restores pipe and conduit threads in many sizes.

Screw Thread Dies

Use these dies to create external threads on bolts, studs, and rods.

Left-Hand Screw Thread Dies

Cut left-hand external threads on bolts, studs, and rods.

Pipe and Conduit Thread Dies

Create external pipe and conduit threads.

Ridgid Dies and Pipe and Conduit Threaders

Die Heads for Ridgid Pipe and Conduit Threaders

Connect to a compatible ratchet or electric threader to cut external pipe and conduit threads.

Ridgid Pipe and Conduit Threader Ratchets with Handle

Grip compatible die heads to cut external pipe and conduit threads by hand.

Ridgid Pipe and Conduit Threader Sets

Each set includes a ratchet with handle, die heads, and dies. Use them to cut NPT threads in steel pipe and conduit by hand.

Ridgid Dies for Cutting Pipe and
Conduit Threads in Stainless Steel

The teeth on these high-speed steel dies are designed to cut through stainless steel.

Ridgid Dies for Cutting Pipe
and Conduit Threads in Steel

Use these dies with Ridgid pipe and conduit threader die heads on Ridgid pipe and conduit threaders.

Ridgid Dies for Cutting Pipe
and Conduit Threads in PVC

Cut threads in PVC with the specially designed teeth on these high-speed steel dies.

Ridgid Dies for Cutting Screw Threads

Use these dies with Ridgid pipe and conduit threader die heads on Ridgid pipe and conduit threaders.

Hand-Held Ridgid Electric Pipe and Conduit Threaders

Carry this pipe and conduit threader to your work site.

Ridgid 300 Electric Pipe and Conduit Threaders

Thread, cut, and ream pipe and conduit with these machines.

Ridgid Large Size Pipe and Conduit Threader Adapters

Use with Ridgid Electric Pipe and Conduit Threaders and Ridgid Hand-Held Electric Pipe and Conduit Threaders to thread pipe and conduit sizes of 2-1/2, 3, 3-1/2, and 4.

Ridgid 535A Electric Pipe and Conduit Threaders

These machines thread faster than the Ridgid 300 and include a self-lubricating die head and automatic chuck.

Replacement Parts and Accessories for Ridgid
Large Size Pipe and Conduit Threader Adapter

Add or replace parts such as drive adapters, die sets, and drive bars for the Ridgid Large Size Pipe and Conduit Threader Adapter.

Replacement Parts and Accessories
for Ridgid Pipe and Conduit Threaders

Add or replace parts such as die sets, power drives, and die head adapters on Ridgid Pipe and Conduit Threaders.

Die Holding

Wrenches for Round Dies

Also known as die stocks, these wrenches grip round dies so you can turn them by hand.

Wrenches for Hex Dies

Use these wrenches to turn hex-shaped dies by hand. They're also known as die stocks.

Round Die to Hex Die Adapters

Convert round dies to hex dies for use with a conventional wrench.

Threading Sets

Thread Repairing Die Sets

Repair rusted or damaged external threads in a variety of sizes.

Two-Piece Thread Repairing Die Sets

Clamp these dies around your workpiece, so you can start thread repair anywhere along the length of a bolt, stud, or rod.

Thread Repairing Die and File Sets for Tight Spots

Renew external threads in a wide range of sizes. The dies in these sets have a narrower width than standard dies, making them a good choice for thread repair in tight spots.

Die Sets

Cut several sizes of external screw threads.

Tap and Die Sets

Use a single set for many sizes of internal and external threads. All sets include tap and die wrenches.

Tap, Die, and Drill Bit Sets

Cut and repair threads and drill holes in many different sizes. Tap and die wrenches are included.

Thread Repairing Tap, Die, and File Sets

Repair screw threads in a wide range of sizes.