We supply screw gauges to the following standards and fits from stock.
We can supply any other, prices on application.
METRIC THREADS (BS 3643, BS 919 Part 3)
Screw Plug gauges Class 6H. Screw Ring gauges Class 6g.
UNF, UNC, UNEF (BS 1580, BS 919 Part 1)
Screw Plug gauges Class 2B. Screw Ring & Caliper gauges Class 2A
BSW, BSF, WHITWORTH (BS 84, BS 919 Part 2)
Screw Plug gauges Medium/General. Screw Ring & Caliper gauges up to 3/4" Medium U/P. Screw Ring & Caliper gauges over 3/4" Medium/General.
BSP(G) (BS 2779, BS 919 Part 2)
Screw Plug gauges Class A (medium fit). Screw Ring & Caliper gauges Class A or Class B (free fit). Unless otherwise stated Class A will be supplied.
BA (BS 93, BS 919 Part 2)
Screw Plug gauges Normal. Screw Ring & Caliper gauges Normal U/P.
BSPT (R/Rc) BS 21
Screw Plug & Ring gauges System B. Min/Max steps.
NPT/NPTF (ANSI)
Screw Plug & Ring gauges L1 Step Limit.
Screw plug gauges are described by their style. Standard double-ended Go/NoGo screw thread plug gauge is style ‘E’. Other styles are:-
Style ‘A’ Double ended setting plug for caliper gauges.
Style ‘D’ Single ended effective NoGo plug gauge.
Style ‘F’ Go screw plug gauge and NoGo plain core plug gauge.
Style ‘G’ Go screw plug gauge and Go plain core plug gauge.
Style ‘H’ NoGo screw plug gauge and NoGo plain core gauge.
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