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The RIDGID RDDHCOOR12 is a complete OO-R die head assembly designed to cut 1/2 inch NPT threads on pipe. The OO-R die head mounts to compatible RIDGID hand-operated and power-driven threading machines, guiding replaceable dies through a full threading pass on standard pipe stock. It is a direct-fit assembly intended for use by licensed plumbers, pipefitters, and mechanical contractors working on residential and light commercial piping systems. The complete assembly includes the die head body and the dies required for a full NPT thread cut at the 1/2 inch pipe size.
This die head is suited for field and shop threading of 1/2 inch nominal pipe, including steel, stainless, brass, and other compatible materials depending on the die set in use. It fits the OO-R die head position on RIDGID threading machines, making it a standard replacement or additional-capacity unit for plumbing shops, mechanical contractors, and service technicians who thread pipe on the job or at the bench.
Designed as an OEM-style replacement die head for RIDGID OO-R series pipe threading machines that accept the standard OO-R die head at the 1/2 inch pipe size.
Installation and operation should be performed by a qualified plumber or pipefitter familiar with pipe threading equipment. Disconnect and lock out power to the threading machine before changing or seating the die head. Use appropriate thread-cutting oil during operation to extend die life and produce clean NPT threads. Follow the threading machine manufacturer's operating manual for proper die head engagement, release, and adjustment procedures.
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