{"product_id":"midland-industries-640164-straight-adapter-orb-x-nptf-steel","title":"Midland Industries 640164 Straight Adapter Orb X Nptf Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MIDLAND INDUSTRIES 640164 is a straight hydraulic adapter that transitions a 3\/8 inch Male O-Ring Boss (ORB) connection to a 1\/4 inch Male NPTF port. Machined from steel, this fitting is rated to 3,600 psi working pressure and handles operating temperatures up to 375 degrees F. The 9\/16-18 x 1\/4-18 thread configuration provides a secure, leak-resistant seal suited to demanding hydraulic plumbing applications. It is installed by hydraulic technicians, pipefitters, and fluid power professionals in industrial and mobile equipment environments.\u003c\/p\u003e\n\u003cp\u003eThis adapter is designed for use in steel pipe hydraulic systems where an O-Ring Boss port must connect to a Male NPTF threaded port. Typical applications include hydraulic power units, mobile machinery, industrial equipment manifolds, and fluid power control circuits. The ORB-to-MNPT configuration is a common cross-connection requirement in system fabrication and repair work. The 6401 Series designation places this fitting within a family of Male O-Ring to Male NPT adapters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3,600 psi rated working pressure for high-demand hydraulic service\u003c\/li\u003e\n  \u003cli\u003e375 degrees F maximum operating temperature\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch Male O-Ring Boss (ORB) to 1\/4 inch Male NPTF thread configuration\u003c\/li\u003e\n  \u003cli\u003e9\/16-18 x 1\/4-18 thread sizes for precise port matching\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in industrial and mobile hydraulic applications\u003c\/li\u003e\n  \u003cli\u003eStraight adapter geometry for direct, in-line port connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or system-build fitting for steel hydraulic plumbing circuits requiring a Male O-Ring Boss to Male NPTF straight adapter connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and isolate the hydraulic circuit fully before removing or installing any fittings. The NPTF thread provides a pressure-tight mechanical seal; follow standard thread engagement practices and use appropriate thread sealant if required by system specifications. Inspect the O-Ring Boss seat and O-ring condition before torquing the fitting to avoid seal damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size 1\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type 1\u003c\/strong\u003e: Male O-Ring Boss (ORB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size 2\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type 2\u003c\/strong\u003e: Male NPTF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread\u003c\/strong\u003e: 9\/16-18 x 1\/4-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Pressure\u003c\/strong\u003e: 3,600 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Operating Temperature\u003c\/strong\u003e: 375 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.65 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.075 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 6401 Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MIDLAND INDUSTRIES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 640164\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MIDLAND INDUSTRIES","offers":[{"title":"Default Title","offer_id":67950180958514,"sku":"640164","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e3c9ae98aa619003d301eed3e595c113_31dfadff-f3d4-4630-a056-a881f27876b8.jpg?v=1791708440","url":"https:\/\/voomisupply.com\/products\/midland-industries-640164-straight-adapter-orb-x-nptf-steel","provider":"Voomi Supply","version":"1.0","type":"link"}