The RIDGID 51872 12-R Die Head is an essential tool for any professional plumber, pipefitter, or electrician who requires flawless manual threading. This 1-inch capacity die head is engineered to create perfect National Pipe Taper (NPT) right-hand (RH) threads on pipe and conduit, ensuring leak-tight seals and secure mechanical connections.
Part of the legendary RIDGID 12-R series, this die head is built from high-grade, heat-treated alloy steel to withstand the rigors of daily use on the job site. It is designed to work seamlessly with the R-200 (or similar) manual threader handle, providing the leverage and control needed for efficient, high-quality threading.
Key Features & Benefits:
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Precision NPT Threads:Â Cuts perfect 1-inch National Pipe Taper (NPT) threads, the standard for pressure-tight pipe connections in North America. Ensures a reliable, leak-free seal.
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Right-Hand (RH) Rotation:Â The standard thread direction for the majority of pipe fittings and applications.
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Rugged 12-R Design:Â Manufactured from high-strength, heat-treated alloy steel for maximum durability and long service life, resisting wear and chipping.
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Quick-Change & Easy to Use:Â The die head easily locks into and releases from the R-200 handle, allowing for fast setup and changes to boost productivity.
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Clear Chip Channels:Â Efficiently directs threading oil and metal chips away from the work area, resulting in a cleaner cut and longer tool life.
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Guaranteed Compatibility:Â Designed specifically for use with RIDGID R-200, R-300, and R-400 series manual threader handles (handle sold separately).
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Industry Standard:Â Trusted by tradespeople worldwide for its consistent performance and reliability in critical threading applications.
Technical Specifications:
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Model Number:Â 51872
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Die Head Series:Â 12-R
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Thread Type:Â NPT (National Pipe Taper)
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Thread Direction:Â Right Hand (RH)
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Capacity:Â 1 Inch
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Compatible Handle:Â R-200, R-300, R-400 Series (Sold Separately)
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Application:Â Manual threading of steel, stainless steel, and other metal pipes and conduits.
Ideal For:
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Professional Plumbers & Pipefitters:Â Creating threaded connections for water, gas, and steam lines.
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HVAC Technicians:Â Installing refrigerant and fuel lines.
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Electricians:Â Threading rigid metal conduit (RMC) for electrical installations.
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Maintenance & Facility Teams:Â For repair, modification, and new construction projects.







