1-1/2" NST NH Fire Hose Hydrant Cap Polished Chrome on Brass & Stainless Chain

1-1/2″ Female NST(NH) Fire Hose or Hydrant Cap with Chain – Pin Lugs
Polished Chrome Finish on Brass, Stainless steel Chain
Will only connect to a Male National Hose (NH) or National
Standard Thread (NST)
with an outside diameter of 1.99 inches
COMMONLY USED THREADS
National Standard
Thread
NH/NST
Straight Iron Pipe
NPSH/IPT
Standard Pipe
Thread
NPT/TIPT
British Standard
Pipe Thread
BSP
Size
ODM
TPI
ODM
TPI
ODM
TPI
ODM
TPI
¾”
1.375
8
1.035
14
1.050
14
1″
1.375
8
1.295
11.5
1.315
11.5
1.309
11
1½”
1.990
9
1.878
11.5
1.900
11.5
2″
2.515
8
2.352
11.5
2.375
11.5
1.882
11
2½”
3.068
7.5
2.841
8
2.875
8
3″
3.623
6
3.470
8
3.500
8
2.960
11
3½”
4.243
6
3.970
8
4.000
8
4.125
3
4″
5.010
4
4.470
8
4.500
8
4.625
3
4½”
5.760
4
4.970
8
5.000
8
5.125
3
5″
6.260
4
5.563
8
5.625
3
6″
7.025
4
6.625
8
6.625
3