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Threaded Ring Gauges
Available447 products
Threaded ring gauges are round metal rings that are threaded on the inside to a nominal size. They are used to check whether externally threaded parts and fasteners are within tolerance. The adjustment mechanism for adjustable threaded ring gauge consists of a locking assembly, sleeve, and adjustment screw. Go (Plus) rings have a slightly larger pitch diameter, and if the externally threaded part mates cleanly, then it passes the Go test. The No-Go (Minus) ring has a slightly smaller pitch diameter, and if the externally threaded part mates cleanly, it is out of tolerance and fails the test. All gauges are marked with nominal size and gauge type, and are right-handed unless stated otherwise.
Threaded Ring Gauges - Unified Inch Threads
These threaded ring gauges are used to check and inspect internal inch threads in Unified thread standards including Unified Coarse (UNC), Unified Fine (UNF), and others. Go or No-Go gauge members are available individually or as sets with both Go and No-Go ring gauges.
UNC
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UNEF
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UNF
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UNS
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Threaded Ring Gauges - Metric Threads
These threaded ring gauges are used to check and inspect coarse and fine internal metric threads. Individual Go or No-Go gauge members are available separately or as sets with both Go and No-Go gauge members.
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