1-1/2" BSP Brass Flanged Back-nut

1-1/2 inch BSP brass back-nut.

This is the size used on kitchen sink and bath wastes.

The outside diameter of the male 1-1/2 inch BSP thread that this backnut fits onto measures 47.80 mm / 1.882 inch.

Bathroom wash hand basin wastes use a nut with a smaller 1-1/4 inch BSP thread.

** BSP thread sizes are measured a special way - have a look at our information page for more details **

You can save money on this item when you purchase several at a time. The table below shows the minimum quantities required to benefit from this discount offer, and how much they'll cost.