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The Fastener Specialist - Asia Bolts & Nuts Manufacturer of bolts and nuts, fasteners for export
Glossary of terminology on topics related to nuts and bolts, threaded fasteners and tightening techniques.
MOLYBDENUM DISULPHIDE
NICKED THREADS There are acceptance tests for nicked threads that involve measuring the maximum torque required to drive a GO gauge down the thread. Examples of acceptance tests are SAE J123 and the Ford Motor specification WA990 1993. Nicks and indentations in threads are sometimes referred to as gouges. NOMINAL DIAMETERThe diameter equal to the external diameter of the threads. NUT DILATION |
NUT RUNNER The design of the tool is such that attempts are made to ensure that the applied torque is independent of joint stiffness. NYLOC NUT The nut is covered by UK patent 8028437 and European patent 81303450-1. Nyloc is a registered trade name of Forest Fasteners.
OVERTAPPING It is normal practice to overtap the internal rather than the external thread. OCTAGON HEAD |