1/2 inch BSP Sink Tap Back Nut

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Product description

  • Large diameter flange to maximise contact with against sealing washers to create a more stable seal.
  • Most plumbing products thread sizes are stated as BSP imperial thread measurements which means that the actual diameter of the thread is approximately 1 4 inch larger than that stated in BSP terms. For example the thread on this product has an actual thread diameter of approximately 3 4 inch. If you require one with an actual diameter of 1 2 inch you will require a 1 4 inch BSP thread.
  • Replaces plastic or nylon backnuts fitted to many plumbing threads
  • Generally for use on sink and basin taps often with an incoming water pipe diameter of 15mm

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