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Abbreviations for standard thread forms
BA - British Association
BSB - British Standard Brass
BSP - British Standard Pipe (Fine) "G" Series
BSPT - British Standard Pipe Taper (Rc Series)
BSW - British Standard Whitworth
BSF - British Standard Fine
M - Metric
MF
- Metric Fine
NPS - National Pipe Straight
NPT - National Pipe Taper
UNC - Unified National Coarse
UNF - Unified National Fine
UNEF - Unified Extra Fine
