Home /Ridgid /Tools & Hardware /RIDGID 38120 5-Piece High-Speed Steel Pipe Threader Die Set for Model 141

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Tools & Hardware

RIDGID 38120 5-Piece High-Speed Steel Pipe Threader Die Set for Model 141

Name: RIDGID 38120 5-Piece High-Speed Steel Pipe Threader Die Set for Model 141
Brand: Ridgid
SKU: WOR-TOO-1193
Price: 92.79 USD
Availability: InStock
Rating: 4.4 (9 reviews)

4.4 (9)

$277.92 $92.79

The RIDGID 38120 five-piece high-speed steel die set threads 2-1/2 in to 4 in NPT pipe at 8 TPI and is purpose-built for the RIDGID Model 141 receding geared threader.

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Pair withRIDGID 38540 Manual Pipe Threader for 00-R / 00-RB Systems – 3 ft Ratchet Handle$43.20

Categories : Tools & Hardware

SKU : WOR-TOO-1193

Description

The RIDGID 38120 five-piece high-speed steel pipe threader die set is designed specifically for the RIDGID Model 141 receding geared threader. It cuts National Pipe Taper (NPT) threads on pipes from 2-1/2 in to 4 in at a standard 8 threads per inch. The high-speed steel construction keeps cutting edges sharp longer, even on steel pipe and frequent job-site threading.

RIDGID 38120 Pipe Threader Dies for the Model 141

This replacement die set includes five dies in the sizes needed for the Model 141’s capacity. Each die is precision-ground and manufactured to fit the threader’s sliding head for clean, consistent threads.

Compatibility and Thread Specifications

Use these dies with the RIDGID Model 141 receding geared threader. They cut right-hand NPT threads at 8 TPI, which is standard for larger pipe sizes. The die set is not a complete threader; it includes only the dies.

Installation and Replacement

Remove the old dies, clean the slots in the threader head, then insert the new dies in the correct sequence as shown in the RIDGID 141 manual. Make sure the die numbers match the head positions and tighten retaining bolts securely. Test the die on a piece of scrap pipe before starting a full run.

Who Needs the RIDGID 38120?

Plumbers, pipefitters, sprinkler fitters, and maintenance crews who own a Model 141 threader and need sharp, dependable replacement dies for 2-1/2 in to 4 in pipe will find this set a direct fit.

Features

Five high-speed steel dies: Precision-ground for clean NPT threads on 2-1/2 in to 4 in pipe.
Engineered for RIDGID Model 141: Exact die fit for the receding geared threader.
8 TPI right-hand threading: Standard NPT pitch for larger pipes.
High-speed steel construction: Holds an edge longer than carbon steel, reducing replacements.
Professional-grade durability: Built for heavy-duty threading applications.
Model: 38120
Material: High-Speed Steel
Pipe Sizes: 2-1/2 in to 4 in
Thread Type: NPT
Product Type: Pipe Threader Die Set
Threading Hand: Right
Compatible With: RIDGID Model 141 Receding Geared Threader
Number of Pieces: 5
Threads Per Inch: 8 TPI
Seller: Workbench World
MPN: 38120

Product Details

High-Speed Steel vs. Carbon Steel

High-speed steel retains hardness at elevated temperatures, meaning it cuts longer between sharpenings and handles steel pipe better than carbon steel dies.

How NPT Threads Create Seals

NPT threads are tapered, which creates a wedged joint when assembled with pipe dope or tape. The 8 TPI pitch is the standard for 2-1/2 in to 4 in pipe.

Replacing Dies on the Model 141

Clean the die head before installing replacements. Insert dies in the correct order, tighten the bolts gently, then run a test thread on scrap pipe to check alignment.

Frequently Asked Questions

Will these dies fit my RIDGID 141 threader?

Yes, this set is specifically designed for the RIDGID Model 141 receding geared threader.

What pipe sizes can I thread?

The set includes five dies covering 2-1/2 in to 4 in NPT pipe sizes.

Does the set come with a die stock or threader?

No, this is a replacement die set only; it fits the Model 141 threader.

What is NPT?

National Pipe Taper, the standard for pipe threads; these dies cut tapered threads for leak-tight connections.

How do I install the dies?

Follow the RIDGID Model 141 manual; clean the die slots and align each die with the corresponding slot before tightening the retaining bolts.

Customer Reviews

9

5.0

@pipewrench

Verified

Works as intended

Works as intended.

5.0

Jake T.

Verified

Perfect threads

Used with my Model 141. Cuts perfect threads. High quality.

5.0

Sal

Plumber approved

I've been a plumber for 25 years. These dies are the real deal. They thread 2-1/2 to 4 inch pipe smoothly. The HSS teeth stay sharp for a long time. They fit my RIDGID threader perfectly. The case keeps everything organized. A must have for any professional plumber.

4.0

Mason B.

Verified

Good quality

I only needed the 2-1/2 size, but the set includes 3, 3-1/2, and 4. It's good to have them all. Threads came out clean.

5.0

@plumb_pro

Verified

Solid

Cuts like butter. Great investment.

4.0

Rebecca L.

Verified

Good set

I bought these for my husband's plumbing business. He says they're great quality. They cut clean threads. No complaints.

5.0

Oscar

Verified

Expensive but worth it

If you do a lot of large pipe threading, these are the best. Don't bother with cheap imports. RIDGID knows what they're doing.

3.0

Diana P.

Verified

Decent but high price

They work fine, but I think they're overpriced. For occasional use, rent them. But for pros, it's a good buy.

4.0

@tool_seeker

Verified

Good dies

These made threading a 3 inch pipe easy. The teeth are sharp. The set is complete.

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RIDGID 38120 5-Piece High-Speed Steel Pipe Threader Die Set for Model 141

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Description

RIDGID 38120 Pipe Threader Dies for the Model 141

Compatibility and Thread Specifications

Installation and Replacement

Who Needs the RIDGID 38120?

Features

High-Speed Steel vs. Carbon Steel

How NPT Threads Create Seals

Replacing Dies on the Model 141

Frequently Asked Questions

Customer Reviews

@pipewrench

Works as intended

Jake T.

Perfect threads

Sal

Plumber approved

Mason B.

Good quality

@plumb_pro

Solid

Rebecca L.

Good set

Oscar

Expensive but worth it

Diana P.

Decent but high price

@tool_seeker

Good dies

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