Not a direct fit. Joining 1 inch camlock coupling to 1" BSP tapered (R1 / BSPT) needs a 1 inch camlock to R1 threaded adapter. Sealing method, the real-world trap, and the exact part to use.
Updated 05 September 2026.
Connect 1 inch camlock coupling to 1" BSP tapered (R1 / BSPT)
How to join 1" camlock (A-A-59326) and R1, and what stops it leaking.
Not a direct fit. Joining 1 inch camlock coupling to 1" BSP tapered (R1 / BSPT) needs a 1 inch camlock to R1 threaded adapter.
The part to buy
A 1 inch cam-and-groove coupling has no thread of its own, so it reaches a R1 (tapered BSP (BSPT)) port through a same-size threaded camlock adapter: a Type A male adapter or a threaded coupler carrying the R1 thread on its back. That thread is a tapered, 55 degree form of 33.249 mm major diameter at 11 threads per inch and seals on the thread flanks with PTFE tape or paste; the cam end then mates to its opposite 1 inch camlock half.
The 1 inch cam profile and the R1 thread are two separate choices. A correct R1 back thread still leaves you with the wrong front if the half you mate to is not the matching 1 inch cam type, so confirm both the size and the A-to-F type before buying.
Related connections
Questions and answers
Connect 1 inch camlock coupling to 1" BSP tapered (R1 / BSPT)?
Not a direct fit. Joining 1 inch camlock coupling to 1" BSP tapered (R1 / BSPT) needs a 1 inch camlock to R1 threaded adapter.