{"product_id":"value-collection-831991msc-m8x1-25-k-lock-hex-nut","title":"Value Collection 831991MSC M8x1.25 K-lock Hex Nut","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 831991MSC is an M8x1.25 zinc plated steel K-Lock hex nut with an integrated external tooth lock washer. This fastener combines a standard hex nut with a built-in serrated lock washer that bites into the mating surface under torque, resisting loosening from vibration and dynamic loads. The nut is manufactured from steel with a zinc plated finish for basic corrosion resistance. It is sized at M8 with a 1.25mm thread pitch, a 13mm width across flats, and a 15mm washer diameter. Electricians, HVAC technicians, plumbers, and general mechanical trades use this style of fastener wherever a self-locking one-piece assembly is required.\u003c\/p\u003e\u003cp\u003eK-Lock hex nuts with external tooth lock washers are used in a wide range of light to medium-duty mechanical and electrical assembly applications. Common install scenarios include panel mounting, equipment enclosures, conduit fittings, motor mounts, and structural fastening where a separate loose lock washer is impractical. The external tooth design provides higher locking friction than a plain hex nut while eliminating the need to handle a separate washer component during assembly.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM8x1.25 thread size for compatibility with standard metric M8 fastener applications\u003c\/li\u003e\n\u003cli\u003eExternal tooth lock washer integrated into the nut for single-piece installation\u003c\/li\u003e\n\u003cli\u003e13mm width across flats fits standard metric hex wrenches and sockets\u003c\/li\u003e\n\u003cli\u003e15mm washer diameter provides a wider bearing surface than the nut body alone\u003c\/li\u003e\n\u003cli\u003eZinc plated steel finish offers basic corrosion protection in dry or low-moisture environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard metric M8x1.25 K-Lock hex nut suitable for use with any M8x1.25 threaded bolt or stud conforming to standard metric thread specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by hand-threading followed by tightening with a standard 13mm metric wrench or socket. Always ensure the mating bolt or stud threads are clean and free of debris before assembly. The external tooth lock washer requires direct metal-to-metal contact with the mating surface to function correctly — do not install over soft materials, coatings, or oversized clearance holes that would prevent the teeth from engaging. De-energize any electrical panel or equipment before fastening hardware in live enclosures in accordance with applicable NFPA 70 (NEC) requirements.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M8x1.25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 13mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Diameter\u003c\/strong\u003e: 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: K-Lock Hex Nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLock Washer Type\u003c\/strong\u003e: External Tooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Weight\u003c\/strong\u003e: 0.007 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 831991MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699869974834,"sku":"831991MSC","price":3355.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a209bc974654630bcec0f599600fbc2.jpg?v=1788382289","url":"https:\/\/voomisupply.com\/products\/value-collection-831991msc-m8x1-25-k-lock-hex-nut","provider":"Voomi Supply","version":"1.0","type":"link"}