Page 202 - b.safe catalog

170 b.safe TECHNICAL INFORMATION
Connection Threads
G or R (Whitworth Pipe Thread) and BSP (British Standard Pipe)
. Main use in countries with imperial system . G-threads: cylindrical O. D. and I. D.
. R-threads: tapered O. D. and cylindrical I. D.
Example:
G 3/8" – O. D. = 16,5 mm
M (metric ISO thread) – Standard in Europe
. Cylindrical O. D. respectively I. D.
. Fine taper through metric thread
. best possible force transmission
. capital “M” plus an indication of nominal . O. D., e. g. M 10
deviating pitch from the standard is marked with an appendix, e. g. M 10 x 0,75.
Example:
M 10 – O. D. = 10 mm
Pitch
19 thread pitches on 1" = 1,34 mm
Pitch
Pitch 1,50 mm
O. D.
O. D.
NPT (National Pipe Thread) Tapered American Pipe Thread
. tapered O. D. respectively I. D. . self-sealing
Example:
NPT 1/8" – O. D. = 9,9 mm
Pitch
27 thread pitches on 1" = 0,9 mm
Pitch
O. D.