BLEED SCREWS
Brass air vent with 1/2" BSP male thread - ANTIQUE BRASS (NO KEY NEEDED)
- Fits onto all radiators
- No key needed
- Fits a hole of approx. 3/4"
BSP (British Standard Pipe Thread) sizes do not match up with what you measure using a ruler.
There's about 1/4 inch difference between the name of the thread and it's physical size.
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