FDC Breakable Plastic Caps
(Set of 2)
Red Molded Plastic –
2½”
NST
Each set includes two caps and 4 eyelets with nuts for Fire Department Connection- FDC 2½” swivels.
The caps have been molded with scored tabs for easy removal with a wrench.
Provides protection against foreign material into the FDC swivels but
allow for quick access when a hose connection is necessary.
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
(Fire Department Connection shown with these caps installed)