SocketFinderUSA / Shop reference
Universal Fastener & Thread Identifier
Measure an unknown external thread, tapped hole or pipe fitting. Enter what you know; the tool compares the standards already covered by SocketFinderUSA. It does not identify a fastener by socket size.
Verify the application.
Not sure
Measure before matching
Measure diameter across thread crests, then measure pitch or count threads per inch. Internal thread bore diameters need extra caution. Pipe nominal sizes do not equal measured outside diameter; tapered threads vary along the fitting.
Confirm with a thread gauge and the applicable manufacturer specification.