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Adapter (Female NPT to Male ISO Tapered (BSPT) Threads)

Female NPT Thread Size Male BSPT Thread Size Dimensions in mm F-Hex (Inch) Pressure Rating PSIG (Bar) Dawsons-Tech Part No.
P1 P2 E L
1/8 1/8 4.8 27.7 9/16 6100 (415) A-2N-2RT
1/4 1/4 7.1 36.1 3/4 6200 (422) A-4N-4RT
3/8 3/8 9.6 38.1 7/8 5000 (340) A-6N-6RT
1/2 1/2 11.9 49.3 1-1/16 4600 (315) A-8N-8RT
3/4 3/4 15.7 51.3 1-1/4 4300 (292) A-12N-12RT
1 1 22.4 58.4 1-5/8 4100 (280) A-16N-16RT
Dimensions are for reference only and are subject to change.

Adapter (Female ISO Tapered (BSPT) to Male NPT Threads)

Female BSPT Thread Size Male NPT Thread Size Dimensions in mm F-Hex (Inch) Pressure Rating PSIG (Bar) Dawsons-Tech Part No.
P1 P2 E L
1/4 1/4 7.1 36.3 3/4 6200 (422) A-4RT-4N
3/8 3/8 9.6 38.4 7/8 5000 (340) A-6RT-6N
1/2 1/2 11.9 49.8 1-1/16 4600 (315) A-8RT-8N
Dimensions are for reference only and are subject to change.