1" BSP Poly Washer

Note this size refers to a British Standard Pipe Thread. This washer fits OVER a 1 inch male BSP thread, the washer itself does not measure 1 inch.

The inside diameter of the washer measures approx 34mm on the scale of a ruler.

Manufactured from low density polythene.

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