BSPP & BSPT Thread Identification Table

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BSPP & BSPT Thread Identification Table

BSP – BRITISH STANDARD PIPE
BSPT – BRITISH STANDARD PIPE TAPER DIN 3852-1+2

BSPP – BRITISH STANDARD PIPE PARALLEL ISO 1179-1,DIN 3852 T2

Dash
Size
Thread Size –
Threads Per
Inch
BSPP Male
Thread Size
BSPP Female
Thread Size
BSPT Male
Thread Size
BSPT Female
Thread Size
usa Size – TPI mm Inch mm Inch mm Inch mm Inch
-2 1/8″ – 28 9.59 0.38 8.6 0.34 9.51 0.37 8.49 0.33
-4 1/4″ – 19 13.01 0.51 11.9 0.47 12.78 0.5 11.19 0.44
-6 3/8″ – 19 16.49 0.65 15.2 0.6 16.31 0.64 14.68 0.59
-8 1/2″ – 14 20.79 0.82 19.1 0.75 20.39 0.8 18.32 0.72
-10 5/8″ – 14 22.81 0.9 20.8 0.82 22.51 0.89 20.59 0.81
-12 3/4″ – 14 26.31 1.04 24.6 0.97 25.91 1.02 23.91 0.94
-16 1″ – 11 33.09 1.3 30.7 1.21 32.59 1.28 29.71 1.17
-20 1.1/4″ – 11 41.79 1.64 39.4 1.55 41.09 1.62 38.59 1.52
-24 1.1/2″ – 11 47.69 1.88 45.5 1.79 47.01 1.85 44.49 1.75
-32 2″ – 11 59.51 2.34 57.4 2.26 58.6 2.31 56.39 2.22

* Thread size refers to the nominal bore of the pipe.
Subtract approx. 1/4″ (6mm) from thread diameter measurement for nominal pipe size.

BSPP & BSPT Thread Identification

 

BSPP : BSPP male with conical 30° seat (60° included angle) seal against matching conical 30° seat of BSPP female swivel.
BSPP – Form B – Seals using a metal to Metal sealing Edge.
BSPP – Form E – Seals using a Elastomer Seal (Volz WD Seal)
BSPP – Form B can also be used with Captive O-rings or Encapsulated Seals for Chamfered Female Ports or for your preference.
BSPP Positional Elbows and tees have Lock Nut and O ring to allow orientation of fitting to required direction.

BSPT : BSPT male threads seal against threads of a fixed BSPT female.
Contact is made on the flanks of the threads.
Use of Volz thread sealant or Thread Lubricant is recommended for BSPT male to BSPT female connections.

Compatability: Please ring for more information about interchangeability