{"product_id":"merit-brass-k419-48-pipe-locknut-3-in-304-ss-threaded","title":"Merit Brass K419-48 Pipe Locknut 3 in 304 Ss Threaded","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MERIT BRASS K419-48 is a 3-inch pipe locknut manufactured from 304 stainless steel for use in threaded piping systems. Locknuts are used to secure fittings, bushings, and other threaded components against a panel, bulkhead, or mating surface, preventing loosening under vibration or flow pressure. This locknut features a Female National Pipe Straight Locknut (FNPSL) end connection, a 150 psi pressure rating, and meets ISO standards. At 4-9\/64 inches in length and weighing 1.08 pounds, it is a solid, corrosion-resistant component suited for plumbing, industrial piping, and mechanical system applications installed by licensed plumbers and pipefitters.\u003c\/p\u003e\u003cp\u003eThis locknut is appropriate for residential and commercial piping installations where a corrosion-resistant, threaded locknut is required at a panel or equipment penetration. The 304 stainless steel construction makes it well suited for wet environments, mild chemical exposure, and applications where galvanic corrosion from ferrous hardware is a concern. The FNPSL thread form provides a straight, non-tapered engagement, which is commonly used in applications requiring a flush or panel-mount seal against a gasket or fitting face.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e304 stainless steel construction for corrosion resistance in wet and industrial environments\u003c\/li\u003e\n\u003cli\u003e3-inch fitting size with FNPSL (Female National Pipe Straight Locknut) thread form\u003c\/li\u003e\n\u003cli\u003e150 psi pressure rating suitable for standard piping system pressures\u003c\/li\u003e\n\u003cli\u003eMeets ISO standards for dimensional and performance compliance\u003c\/li\u003e\n\u003cli\u003eThreaded connection type for straightforward installation with standard pipe tools\u003c\/li\u003e\n\u003cli\u003eLength of 4-9\/64 inches provides adequate engagement depth for secure locknut seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation component for 3-inch threaded piping systems requiring a straight-thread locknut in stainless steel construction.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of pipe locknuts should be performed by a licensed plumber or pipefitter following applicable IPC and local plumbing code requirements. Depressurize and drain the affected piping section before disassembling any fittings or locknuts. Use appropriate pipe wrenches or strap wrenches sized for 3-inch fittings to avoid damaging the stainless steel surface. Do not over-tighten against plastic panels or soft gasket materials without verifying the rated compression load.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Locknut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 304 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection\u003c\/strong\u003e: FNPSL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4-9\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 40175300\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MERIT BRASS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K419-48\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERIT BRASS","offers":[{"title":"Default Title","offer_id":51541867856178,"sku":"K419-48","price":75.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/343f24b4f19daff2abda4ce8af94bd7b_137d7a9a-a70b-400c-8ee6-c8054d3e040a.jpg?v=1785887170","url":"https:\/\/voomisupply.com\/products\/merit-brass-k419-48-pipe-locknut-3-in-304-ss-threaded","provider":"Voomi Supply","version":"1.0","type":"link"}