Flat Tap Washer 1" BSP Replacement Tap Washer 31mm Diameter (Pack of 4) SKU : 100254 Flat Tap Washer Replacement Tap Washer 1" BSP - British Standard Pipe Thread Outside Diameter : 30.75mm Inside Hole Diameter : 4.50mm Thickness : 4.25mm Quantity in Pack : 4 Please note BSP Sizes are not the same as displayed on a ruler. If you are unfamiliar with BSP sizes please use the metric size as your reference.
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