The RIDGID 37385 is a high-quality, right-hand (RH) alloy die head designed for cutting 3/8-inch National Pipe Taper (NPT) threads. It is part of RIDGID’s professional-grade 12-R series threading system, renowned for its durability, precision, and ease of use in demanding plumbing, piping, and mechanical service applications.
Key Features & Specifications
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Model: 37385
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Brand: RIDGID®
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Thread Size: 3/8 inch
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Thread Type: NPT (National Pipe Taper)
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Thread Direction: RH (Right-Hand)
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Compatibility: 12-R Series Threading Machine
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Material: High-Strength Alloy
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Chuck Type: Uses standard 12-R style die heads and chucks.
Detailed Product Description
1. Primary Function:
This die head is used to cut a 3/8″ NPT external (male) thread onto the end of a pipe, conduit, or rod. The NPT taper ensures a tight, pressure-sealing fit when used with thread sealant tape or compound.
2. Compatibility & System Integration:
The “12 R” in the description is crucial. This die head is specifically engineered to work with RIDGID 12-R Series Power Threading Machines (such as models 1224, 1235, 14120, etc.). It locks securely into the machine’s quick-change carriage, allowing for fast setup and consistent, high-quality threads.
3. Construction and Durability:
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Alloy Construction: Made from a special, hardened alloy that provides exceptional strength and wear resistance. This ensures a long service life even under frequent use in professional settings.
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Precision Ground Thread Chasers: The die head holds four individual, precision-ground chasers that do the actual cutting. These chasers are replaceable, so you don’t need to buy an entire new die head when they become worn.
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Right-Hand (RH) Design: Cuts standard right-hand threads, which tighten by turning clockwise. This is the most common thread direction for pipe fittings.
4. Ease of Use:
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Quick-Change Design: Allows the operator to switch between different die head sizes (e.g., from 1/2″ to 3/8″) on the 12-R machine in seconds, minimizing downtime.
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Clear Size Identification: The size “3/8 NPT” is prominently stamped on the die head for easy identification in a busy workshop or job site.
5. Intended Users:
This is a professional-grade tool intended for:
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Professional Plumbers & Pipefitters
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HVAC Technicians
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Maintenance Personnel in industrial and facility settings
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Mechanical Contractors
