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The VALUE COLLECTION A210016 is an M8x1.25 metric coarse hex jam nut manufactured from stainless steel with a right-hand thread direction. Jam nuts are low-profile locking nuts used to secure a standard nut in place or to lock a threaded fastener against a surface, preventing loosening from vibration or torque. This nut measures 13mm across the flats and stands 4mm high, with an uncoated finish that preserves the natural corrosion resistance of the stainless steel base material. It is sized for M8 threaded rod, bolts, or machine screws with a 1.25mm thread pitch. Plumbers, HVAC technicians, electricians, and mechanical contractors reach for jam nuts in panel mounting, equipment anchoring, and pipe-support applications where a thin locking profile is required.
This jam nut is suited for light-duty to medium-duty fastening applications across residential and commercial trade work. Common install scenarios include securing threaded rod used in pipe hangers and conduit supports, locking adjustment hardware on equipment frames, and assembly work on HVAC equipment, electrical enclosures, and plumbing support systems. The stainless steel construction makes it a practical choice in environments with moisture exposure, such as mechanical rooms, rooftop units, and wet utility spaces. Sold in a package quantity of 25 per unit.
Designed for use with M8x1.25 metric coarse threaded bolts, rods, and machine screws following standard metric thread specifications.
Hex jam nuts are installed by licensed trades and qualified technicians using standard open-end or box wrenches sized to the 13mm across-flats dimension. When used as a locking nut, thread the jam nut against the primary nut and tighten the two against each other. Always verify thread pitch and direction before installation to avoid cross-threading. De-energize or isolate any equipment before performing fastener work on electrical enclosures or live mechanical systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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