600-I / 690-I
Choose when portability matters and the existing 11-R ecosystem is useful. The 600-I favors compact work through 1-1/4 inch; the 690-I extends the portable range to 2 inches.
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RIDGID threading-system guide
RIDGID Pipe Threaders: 300, 535, 700 & Portable Power Drives
RIDGID offers compact and full-size portable drives, the 12-R-centered Model 700, and established 300/535 stationary platforms. The key is matching the job to the correct die-head family rather than treating every RIDGID threader as one interchangeable system.
RIDGID is not one threading ecosystem
The 600-I/690-I portable drives, 700 Power Drive, 300 platform and 535 machines use different head architectures and workflows. Start by identifying which family matches the job and any die heads you already own.
Last technical review: August 25, 2026. For exact head compatibility, use the Die & Die Head Finder.
RIDGID threading families at a glance
| Family | Normal capacity | Primary head path | Workflow |
|---|---|---|---|
| 600-I | 1/8–1-1/4 in. | 11-R | Compact corded portable |
| 690-I | 1/8–2 in. | 11-R | Full-size corded portable |
| 700 | 1/8–2 in. | 12-R direct; selected older families through adapters | Heavy-duty handheld Power Drive |
| 300 | 1/8–2 in. direct; up to 6 in. with geared threaders | Universal machine die-head family in Complete setup | Modular jobsite/shop Power Drive |
| 535 / 535A | 1/8–2 in. direct; larger with geared threader | 811A, 815A, 816/817 and related machine heads | Integrated stationary threading machine |
RIDGID 300: modular jobsite and shop platform
The Model 300 can be purchased as a Power Drive or as a more complete threading setup. That distinction matters when comparing listings. The Power Drive is the drive/chuck platform; a Complete configuration adds the carriage, cutter, reamer, oil system, die head and stand components needed for a conventional machine workflow.
RIDGID rates the 300 Power Drive for 1/8–2 inch pipe directly, with larger capacities available through Models 141 and 161 geared threaders. It is also widely used as a drive for RIDGID roll groovers, which makes it more than a single-purpose threading machine.
Read the RIDGID 300 model guide or open the finder for a stationary 2-inch NPT job.
RIDGID 535 and 535A: dedicated machine workflow
The 535 family is built around a high-clearance carriage, integrated cutter/reamer/oiling workflow and multiple machine-head options. Current RIDGID documentation lists the 811A quick-opening, 815A self-opening and 816/817 semi-automatic families among supported heads.
The current 535 machine directly threads 1/8–2 inch pipe. Larger sizes use geared threaders rather than an oversized ordinary die head. The 535A adds automatic-chuck variants, so a listing described simply as “535” should be checked for the exact chuck, motor and included die-head configuration.
RIDGID 700: 12-R-centered portable power
The Model 700 is a heavy-duty handheld Power Drive, not a stationary threading machine. RIDGID rates it for 1/8–2 inch pipe and explicitly identifies 12-R as the direct die-head family. That makes it particularly relevant to contractors who already own 12-R heads.
RIDGID also publishes adapters for several older die-head families. The 772 adapter (catalog 42610), for example, is specified for 11-R/R-200 heads through 1-1/4 inches. This is a good example of why “fits the same brand” is not enough: some heads require a specific adapter and size ceiling.
11-R, 12-R and machine Universal are different decisions
RIDGID's portable and stationary products are often discussed together, but the die-head interfaces should stay separate in your planning. The 600-I/690-I use 11-R heads, the 700 is centered on 12-R, and the 300/535 machine workflows use Universal-style machine heads such as 811A/815A.
Replacement dies add another layer. A die set can be compatible with multiple heads without making the heads themselves interchangeable. RIDGID's Universal machine dies, for example, fit a broad list of Universal die heads, while portable 12-R sets belong to a different head architecture.
Which RIDGID platform should you choose?
700 Power Drive
Choose when 12-R direct compatibility and a robust corded handheld drive fit the work. Published adapters can preserve selected older head investments.
300 Power Drive
Choose when a proven jobsite/shop platform, grooving capability and Complete machine configuration are valuable.
535 / 535A
Choose for a more integrated stationary threading workflow with multiple die-head/chuck configurations.
RIDGID model guides
Use the dedicated RIDGID 300, RIDGID 535 and RIDGID 700 pages when you need exact machine/head context. For 12-R head and replacement-die catalog numbers, use the RIDGID 12-R guide.
Manufacturer references
Frequently asked questions
What is the difference between the RIDGID 300 and RIDGID 700?
The 300 is a stationary/jobsite Power Drive platform that can become a complete threading machine with carriage, cutter, reamer, oiler and machine die head. The 700 is a heavy-duty handheld Power Drive designed around 12-R die heads. They solve different workflow problems even though both can thread common pipe sizes.
What is the difference between RIDGID 300 and 535 threading machines?
Both are established stationary platforms for direct threading through 2 inches, but the 535 is a more integrated threading-machine family with several chuck and die-head configurations. The 300 remains especially attractive as a modular Power Drive platform that also supports grooving and portable/jobsite configurations.
Which die heads fit the RIDGID 700?
RIDGID designs the 700 for 12-R die heads. RIDGID also publishes adapters for other families, including adapter 772 for 11-R/R-200 heads through 1-1/4 inches. Use the exact adapter listing rather than assuming an older head fits directly.
Can the RIDGID 300 thread pipe larger than 2 inches?
Yes, but not with an ordinary 2-inch machine die head. RIDGID lists 2-1/2–4 inch capacity with the Model 141 geared threader and 4–6 inches with the Model 161 geared threader.
Does RIDGID offer both NPT and BSPT threading setups?
Yes. Current RIDGID documentation lists NPT and BSPT die-head/die options across several portable and stationary systems. The exact head and dies must match the required standard.
Should I choose a RIDGID threader based on die heads I already own?
Existing heads can be an important selection factor, especially with 11-R, 12-R or Universal machine-head families. First verify the direct-fit or adapter path, then compare portability, capacity and workflow.