G Series Screw Plug Gauge is a high-precision GO/NO-GO thread plug gauge designed for inspecting BSPP (G) internal pipe threads, where pressure-tight joints are not made on the threads.
To BS 2779 / ISO 228.
Screw Plugs & Ring - Right Hand only
Formerly BSPF
Besides holding a comprehensive range of Screw Gauges of standard pitch/diameter combinations.
Non-standard sizes, pre-plating gauges, special pitch/diameter combinations & special screw gauges to the customer's drawing can also be manufactured.
G SERIES
SIZES
SCREW PLUGS
GO & NOT GO
GO or NOT GO
D/E (Style E)
S/E*
ORDER NO.
ORDER NO.
G 1/8 x 28
TFG1/8
TFG1/8-
G 1/4 x 19
TFG1/4
TFG1/4-
G 3/8 x 19
TFG3/8
TFG3/8-
G 1/2 x 14
TFG1/2
TFG1/2-
G 5/8 x 14
TFG5/8
TFG5/8-
G 3/4 x 14
TFG3/4
TFG3/4-
G 7/8 x 14
TFG7/8
TFG7/8-
G 1 x 11
TFG1
TFG1-
G 1.1/8 x 11
TFG1.1/8
TFG1.1/8-
G 1.1/4 x 11
TFG1.1/4
TFG1.1/4-
G 1.1/2 x 11
TFG1.1/2
TFG1.1/2-
G 1.3/4 x 11
TFG1.3/4
TFG1.3/4-
G 2 x 11
TFG2
TFG2-
• For single end, please specify G (Go) or NG (Not Go)
