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 :: Specifications  :: Camera-mount  :: ISO Fine Thread  :: ISO Coarse Thread
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 :: 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



BSP Threads British Standard Pipe Threads Whitworth Pipe Thread DIN ISO 228

Specifications of International Thread Standards

       British Standard Pipe Thread, with sealant compound
(parallel, cylindrical), external = G
Nominal
Diameter
Major
Diameter
mm
Minor Diamter
Nut
mm
Tapping
Drill Size
mm
TPI Pitch
mm
G 1/8" 9,73 8,85 8,80 28 0,907
G 1/4" 13,16 11,89 11,80 19 1,337
G 3/8" 16,66 15,39 15,25 19 1,337
G 1/2" 20,95 19,17 19,00 14 1,814
G 5/8" 22,91 21,13 21,00 14 1,814
G 3/4" 26,44 24,66 24,50 14 1,814
G 7/8" 30,20 28,42 28,25 14 1,814
G 1" 33,25 30,93 30,75 11 2,309
G 1 1/8" 37,90 35,58 35,30 11 2,309
G 1 1/4" 41,91 39,59 39,25 11 2,309
G 1 3/8" 44,32 42,00 41,70 11 2,309
G 1 1/2" 47,80 45,48 45,25 11 2,309
G 1 3/4" 53,74 51,43 51,10 11 2,309
G 2" 59,61 57,29 57,00 11 2,309
G 2 1/4" 65,71 63,39 63,10 11 2,309
G 2 1/2" 75,18 72,86 72,60 11 2,309
G 2 3/4" 81,53 79,21 78,90 11 2,309
G 3" 87,88 85,56 85,30 11 2,309
G 3 1/4" 93,98 91,66 91,50 11 2,309
G 3 1/2" 100,33 98,01 97,70 11 2,309
G 3 3/4" 106,68 104,30 104,00 11 2,309
G 4" 113,03 110,71 110,40 11 2,309

Whitworth Pipe Thread
 

 

© 1998 Conex Metals

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