{"product_id":"value-collection-1-thn-31c-hex-lock-nut-5-16-18-ss","title":"Value Collection 1-THN-31C Hex Lock Nut 5\/16-18 Ss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 1-THN-31C is a nylon insert hex lock nut in 5\/16-18 UNC thread, manufactured from 18-8 stainless steel with a bright uncoated finish. The nylon insert creates prevailing-torque resistance that prevents loosening under vibration and thermal cycling without requiring thread-locking compound. At 0.25 inches tall with a 0.5 inch width across flats, this nut fits standard hex tooling. The 18-8 stainless steel construction provides corrosion resistance suitable for wet, outdoor, and chemical-exposure environments. Installed by HVAC technicians, plumbers, electricians, and mechanical contractors wherever a reusable, vibration-resistant fastener is required in stainless applications.\u003c\/p\u003e\u003cp\u003eThis nylon insert lock nut is appropriate for general mechanical assemblies, equipment mounting, pipe hanger hardware, electrical panel work, and light structural connections requiring a right-hand UNC thread. The 5\/16-18 thread size is common across HVAC equipment brackets, conduit support hardware, plumbing fixtures, and pool equipment enclosures. The bright uncoated finish retains the natural corrosion resistance of the 18-8 alloy and is suited for applications where a secondary coating could contaminate a process or reduce dimensional accuracy in tight-tolerance joints.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNylon insert locking style provides prevailing-torque resistance against vibration-induced loosening\u003c\/li\u003e\n\u003cli\u003e18-8 stainless steel construction for corrosion resistance in wet and outdoor environments\u003c\/li\u003e\n\u003cli\u003e5\/16-18 UNC right-hand thread for compatibility with standard inch-series fastener systems\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish preserves material corrosion resistance without added coating mass\u003c\/li\u003e\n\u003cli\u003eWidth across flats of 0.5 inches accepts standard 1\/2 inch hex tooling\u003c\/li\u003e\n\u003cli\u003eReusable design allows removal and reinstallation without sacrificing locking performance for a limited number of cycles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 5\/16-18 UNC male-threaded fasteners across general mechanical, HVAC, plumbing, electrical, and pool equipment assemblies requiring a stainless steel nylon insert lock nut.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by hand-starting the nut onto the mating bolt or stud, then driving to final torque with a standard 1\/2 inch hex wrench or socket. Consult applicable mechanical or structural specifications for the correct torque value for the assembly. Nylon insert lock nuts are suitable for repeated use but should be inspected for insert integrity before reuse. Do not exceed the temperature limits of the nylon insert, as elevated heat can degrade the locking element over time.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Hex Lock Nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Style\u003c\/strong\u003e: Nylon Insert\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 18-8 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 0.492 to 0.502 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Points\u003c\/strong\u003e: 0.552 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.008 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: 1-THN-31C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51706802209074,"sku":"1-THN-31C","price":1298.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd6c0649596cf825664d2f98c7bdcb48.jpg?v=1788436697","url":"https:\/\/voomisupply.com\/products\/value-collection-1-thn-31c-hex-lock-nut-5-16-18-ss","provider":"Voomi Supply","version":"1.0","type":"link"}