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 :: PG Thread  :: S. & H. Thread  :: Edison Thread  :: Valve Thread
 :: Sewing-machine Thread  :: Cycle Thread  :: C. E. I. Thread  :: Löwenherz Thread
 :: Bodmer Thread  :: VDI Thread  :: French Thread  :: Knuckle Thread DIN 405
 :: Knuckle Thread DIN  20400  :: Buttress Fine Thread  :: Buttress Coarse Thread  :: Trapezoidal Fine Thread
 :: Trapezoidal Coarse Thread   :: NPT Thread (USA)  :: NPTF Thread (USA)  :: UNC Thread (USA)
 :: UNEF Thread   :: UNF Thread :: 8-UN Thread (USA)  :: 12-UN Thread (USA)
 ::16-UN Thread (USA)  :: Sharp V Thread (USA)  ::BA British Association (GB)  :: BSF Whitworth Fine Thread(GB)
 :: BSW Whitworth Coarse Thread(GB)  :: BSP Whitworth Pipe Thread(GB)  :: BSPT Tapered Whit - worth Pipe Thread(GB)  :: Conversion Inch-Fractals to mm


Thread Specifications

Specifications of International Thread Standards

Abbreviation Country Thread Angle
°
Description
ISO
60°
International Organization for Standardization
NC
USA
60°
National Coarse
UNC
USA
60°
Unified National Coarse
NF
USA
60°
National Fine
UNF
USA
60°
Unified National Fine
UNEF
USA
60°
Unified National
Extra Fine
UN
USA
60°
Unified National 8-,
12- and 16 pitch series
UNS
USA
60°
Special Threads of
American National Form
NPT
USA
60°
National Taper Pipe 1:16
NPTF
USA
60°
National Taper Pipe
Dryseal 1:16
NPS
USA
60°
National Standard
Straight Pipe
NPSM
USA
60°
National Standard Straight
Pipe for free fitting mechanical
NPSF
USA
60°
National Standard Internal
Straight Pipe Dryseal
BSW
GB
55°
British Standard
Withworth Coarse
BSF
GB
55°
British Standard Fine
BSP
GB
55°
British Strandard Pipe
BSPT
GB
55°
British Standard Pipe Taper
BA
GB
47°
British Standard Association
Nut     Washer
     
Screw     Nut
 
 
 
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