Screw Plug and Ring Gauges


Normal Style

A Single-ended "Go” Gauge for checking the "lower limit” of threaded holes nad checks the full form thread.


 

Style E Plug Gauge

A Double-ended Limit Gauge which is, in effect, a combination of a normal Single-ended "Go” Gauge and a Style ‘D’ "Not Go” Effective Plug Gauge.



Style G Plug Gauge

A Double-ended Limit Gauge as Style ‘F’, but with a plain cylindrical Minor Diameter Gauge made to the "Go” dimensions for checking the "low limits” of the component Minor Diameter.


 

Style A Setting Plug Gauge

A Double-ended Plug Gauge for setting Adjustable Thread Caliper Gauges. Both ends are truncated on the Major Diameter and cleared on Minor Diameter to ensure that the anvils of the Caliper Gauges are accurately set to the Effective Diameter.


 

Style D Plug Gauge

A Single-ended "Not Go” Gauges for checking the high limits of threaded holes. This gauge checks the EFFECTIVE Diameter only, and is made in accordance with customer’s requirements.


 

Style F Plug Gauge

A Double-ended Limit Gauge, the "Go” end of which has a normal "Full Form” thread, whilst the other end is a plain cylindrical "Not Go” Gauge for checking the "high limits” of the Minor Diameter of the compound.


 

Style H Plug Gauge

A Double-ended Limit Gauge combining "Not Go” Effective Style "D” Gauge and a "Not Go” Minor Diameter Gauge.


 

Solid Screw Ring

 



Solid

Gauges above 2 1/2” are made to trilock design as illustrated. They are normally supplied as Single-ended Gauges and therefore as Style ‘E’ Gauge comprises a pair of gauges, a Single-end "Go” and a Single-end "Not Go”.


When ordering gauges please state which of the above types are required. Also specify the class of fit the gauges are required to check.

In I.S.O. Metric threads the various classes of internal thread are 4H, 5H, 6H and 7H.

In I.S.O. Metric threads the various classes of external thread are 4h, 6g and 8g.


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