• for BSW Threads
  • for European Parallel Pipe Threads (G)

unit: mm unit: mm

Major Minor Major Minor

Pitch Diameter Pitch Diameter

Diameter Diameter Diameter Diameter

Size Class Upper Lower Size Class Upper Lower

Tolerance Tolerance Tolerance Tolerance

Basic Size Basic Size Basic Size Basic Size Basic Size Basic Size

(μm)(μm)(μm)(μm)
3/ 32 BSW 48-2.3812.04232151.704G1/ 8 - 28-9.7289.14743218.566
1/ 8 BSW 40-3.1752.76835152.362G1/4 - 19-13.15712.301502511.445
5/ 32 BSW 32-3.9693.46040182.952G3/8 - 19-16.66215.806502514.950
3/16 BSW 24-4.7624.08544213.407G1/ 2 - 14-20.95519.793572818.631
7/ 32 BSW 24-5.5564.87944214.201G5/ 8 - 14-22.91121.749572820.587
1/4 BSW 20-6.3505.53746234.724G3/4 - 14-26.44125.279572824.117
5/16 BSW 18-7.9387.03449236.130G7/8 - 14-30.20129.039572827.877
3/ 8 BSW 16-9.5258.50951257.493G1 - 11-33.24931.770723630.291
7/16 BSW 14-11.1129.95056288.788G1 1/ 4 - 11-41.91040.431723638.952
1/ 2 BSW 12-12.70011.34561309.990G1 1/ 2 - 11-47.80346.324723644.845
9/16 BSW 12-14.28812.933613011.578
5/ 8 BSW 11-15.87514.396633012.917
3/4 BSW 10-19.05017.424693315.798
7/ 8 BSW 9-22.22520.418693318.611
1 BSW 8-25.40023.367743621.334
  • for European Steel Conduit Threads (Pg)

unit: mm Major Minor Pitch Diameter Diameter Diameter

Size Class Upper Lower

Tolerance Tolerance Basic Size Basic Size Basic Size (μm) (μm) + +

Pg7 - 20-12.5011.89603011.28
Pg9 - 18-15.2014.53603013.86
Pg11 - 18-18.6017.93603017.26
Pg 13.5 - 18-20.4019.73603019.06
Pg16 - 18-22.5021.83603021.16
Pg21 - 16-28.3027.541005026.78
Pg29 - 16-37.0036.241005035.48