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The WILLIAMS COMFORT PRODUCTS QYOM21A is a 21 MM open-end torque wrench head designed for precision fastening applications in trade and industrial settings. It features a Y-type shank with a 0.560-inch shank size, allowing it to interface with compatible torque wrench drive systems. With a maximum torque rating of 160 ft-lb, this head delivers the controlled force needed for demanding bolted connections. Licensed technicians and mechanics working in HVAC, plumbing, and mechanical service environments rely on torque wrench heads like this one to meet manufacturer and code specifications when tightening fasteners to exact values.
This torque wrench head is suited for metric fastening tasks where a 21 MM open-end fit is required. It is sold individually and is appropriate for service calls, installation work, and maintenance procedures that require consistent, repeatable torque application. The open-end head design provides access in tight or partially obstructed fastener locations where a closed-end or socket-style head cannot seat properly.
Designed for use with torque wrench drive systems that accept a Y-type shank with a 0.560-inch shank size. Verify shank interface compatibility with your existing torque wrench before installation.
Installation and use of this torque wrench head should be performed by a qualified technician familiar with torque tool systems. Ensure the shank is fully seated and locked into the torque wrench body before applying load. Do not exceed the 160 ft-lb maximum torque rating, as overloading can damage the head or compromise fastener integrity. Follow all applicable manufacturer torque specifications and relevant industry codes when performing fastening work.
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