Five Step Drive Radiator Spud Wrench
Five Step Drive Radiator Spud Wrench
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1/2-Inch Five Step Drive Radiator Spud Wrench – Heavy-Duty Multi-Fit Tool for Radiator and Plumbing Applications
Engineered for durability and versatility, the 1/2-Inch Five Step Drive Radiator Spud Wrench is a specialized tool designed to install and remove radiator spuds and union nuts efficiently and securely. Commonly used in steam and hot water radiator systems, this wrench features a stepped, tapered body with five graduated outer diameters that fit a wide variety of radiator spud sizes, minimizing the need for multiple tools on the job.
Key Features:
- Five-Step Design: The wrench shaft features five distinct stepped diameters, precision-machined to fit a range of spud sizes and internal pipe fittings. This allows for compatibility with most standard cast iron radiator unions, making it a versatile solution for HVAC and plumbing professionals.
- 1/2-Inch Square Drive End: Designed to be used with any standard 1/2-inch drive ratchet, breaker bar, or torque wrench. The square drive ensures maximum torque transfer and control during installation or removal.
- Heavy-Duty Steel Construction: Forged from high-strength, heat-treated steel for exceptional durability and resistance to deformation under high torque loads. The wrench is coated for corrosion resistance, ensuring long-term performance even in damp or high-moisture environments.
- Compact and Efficient: Its compact form factor allows it to reach tight or recessed spud fittings, especially those commonly found in confined radiator housings. Ideal for both fieldwork and shop use.
- Time-Saving Tool: With five sizes in one wrench, this tool eliminates the need to carry a full set of spud sockets, reducing weight and simplifying your toolbox setup.
Common Applications:
- Installing or removing radiator spud nuts
- Servicing radiator unions on steam or hot water systems
- General HVAC and plumbing repair work
- Pipe fitting in tight or hard-to-access areas
Whether you’re retrofitting an old radiator or setting up a new installation, the 1/2-Inch Five Step Drive Radiator Spud Wrench is a professional-grade tool that delivers precision, power, and convenience on every job.



