Home /Ridgid /Tools & Hardware /RIDGID 37390 Model 12-R Hand Threader Die Head – 1/2 in. NPT

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Tools & Hardware

RIDGID 37390 Model 12-R Hand Threader Die Head – 1/2 in. NPT

Name: RIDGID 37390 Model 12-R Hand Threader Die Head – 1/2 in. NPT
Brand: Ridgid
SKU: WOR-TOO-909
Price: 58.38 USD
Availability: InStock
Rating: 4.7 (6 reviews)

4.7 (6)

$123.95 $58.38

The RIDGID 37390 12-R hand threader die head cuts clean right-handed 1/2 in. NPT threads with alloy dies for plumbing and pipe fitting.

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24 people are viewing this item. 14 sold today. Only 4 left in stock.

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Pair withRIDGID 37410 Die Head for 12R Threader – 1-1/2 Inch NPT$76.56

Categories : Tools & Hardware

SKU : WOR-TOO-909

Description

The RIDGID 37390 Model 12-R Hand Threader Die Head is a right-handed NPT die head for 1/2 in. nominal pipe. It mounts to a RIDGID 12-R hand threader and holds alloy dies that produce crisp, tapered threads for dependable joints. For plumbers and sprinkler fitters who thread pipe on site, this compact head is a straightforward replacement or spare.

RIDGID 37390 12-R Hand Threader Die Head: replacement dies guide

When it's time to swap in fresh cutting edges, you need 1/2 in. right-hand NPT dies made for the RIDGID 12-R head. Using the correct die set keeps thread depth and taper consistent, so joints seal properly. Genuine RIDGID dies are the safest choice.

Why the 12-R head fits the job

The die head is designed to hold four dies that self-center on the pipe. That helps you start square and produce clean threads with fewer re-cuts. The alloy construction holds up to job-site use and repeated threading.

Features

Alloy dies cut smooth, accurate right-handed NPT threads on 1/2 in. pipe.
Direct fit for RIDGID 12-R hand threaders.
Four-die design self-centers for a true start.
Compact and rugged, ready for job-site pipe threading.
Replacement 1/2 in. NPT dies keep the head producing clean threads.
Model: 12-R (37390)
Material: Alloy steel
Pipe Size: 1/2 in. NPT
Product Type: Hand Threader Die Head
Compatibility: RIDGID 12-R hand threader
Package Weight: 4.0 lb (1.8 kg)
Thread Direction: Right-Handed
Die Configuration: Four self-centering dies
Package Dimensions: 5.0 x 4.6 x 4.1 in (12.7 x 11.7 x 10.4 cm)
Seller: Workbench World
MPN: 12-R (37390)

Product Details

RIDGID 12-R die head: keep threads cutting clean

The 12-R head is a simple four-die design that has been a standard on plumbing jobs for good reason. It's compact, positive, and easy to handle on a hand threader.

Signs it's time for replacement dies

If threads look rough, the dies have to be pushed hard, or you see more chips than usual, replace the dies. Dull dies wear out faster and make joints harder to seal.

Threading tips

Flush and ream the pipe before threading.
Use cutting oil on every pass.
Back off slightly as the dies advance to break chips.

Frequently Asked Questions

Are replacement dies available for the RIDGID 37390?

Yes, replacement 1/2 in. right-hand NPT dies are available. Use genuine RIDGID dies for consistent thread quality.

What size pipe does the 12-R head thread?

It threads 1/2 in. nominal pipe with NPT right-hand threads.

Will this die head fit my RIDGID 12-R threader?

Yes, the 37390 is the complete 12-R die head for a 1/2 in. pipe.

What is the thread direction?

Right-handed, which is standard for NPT pipe threads.

Can I use this head on a power threader?

No, it is designed for hand threading with the RIDGID 12-R hand threader, not for use on power drives.

Customer Reviews

6

5.0

Earl

Verified

Cuts clean threads

This die head is exactly what I needed for a quick repair. It cut perfect threads on the first try. Fits my RIDGID threader perfectly.

4.0

Doris

Verified

Good quality

My husband uses it for his plumbing work. He says it's a solid tool. The dies are sharp.

5.0

Gene

Verified

RIDGID quality

You can't go wrong with RIDGID. This die head is well made and threads smoothly. I've used it on schedule 40 pipe and it works great.

5.0

Lois

Verified

Works as advertised

I'm a plumber and I've used this die head for years. It consistently cuts clean threads. The dies are hardened and stay sharp. It fits my RIDGID threader perfectly. I've used it on hundreds of joints without a problem. Definitely a necessary tool for any pipefitter.

4.0

Frank

Verified

Fine dies

Good. No case.

5.0

Helen

Verified

Great for DIY

I fixed my own pipes with this. It was easy to use and the threads fit perfectly. I saved a plumber's fee.

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RIDGID 37390 Model 12-R Hand Threader Die Head – 1/2 in. NPT

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Description

RIDGID 37390 12-R Hand Threader Die Head: replacement dies guide

Why the 12-R head fits the job

Features

RIDGID 12-R die head: keep threads cutting clean

Signs it's time for replacement dies

Threading tips

Frequently Asked Questions

Customer Reviews

Earl

Cuts clean threads

Doris

Good quality

Gene

RIDGID quality

Lois

Works as advertised

Frank

Fine dies

Helen

Great for DIY

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