{"product_id":"electro-hardware-p405m12f21440-hex-standoff-4-40-2in","title":"Electro Hardware P405M12F21440 Hex Standoff 4-40 2in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE P405M12F21440 is a female hex circuit board standoff designed to space and support PCBs within electronic enclosures and control assemblies. It accepts a 4-40 threaded fastener and provides a 0.25-inch thread depth for secure engagement. The hex body measures 0.1875 inches across flats and runs 2 inches in overall length, giving technicians a reliable, rigid standoff for stacking or elevating boards at a fixed height. Constructed from steel with a clear zinc chromate finish, this standoff meets ASTM B633 Type 1 and QQ-S-633 standards. It is installed by electricians, control-panel builders, and electronics technicians working on board-level assemblies.\u003c\/p\u003e\u003cp\u003eThis standoff is suited for residential and commercial control panels, HVAC control boards, industrial electronics enclosures, and general PCB mounting applications where a 4-40 thread pattern and a 2-inch overall length are specified. The female thread receives a machine screw from above, allowing the board to be secured at a fixed elevation above the chassis or mounting surface. Single-piece packaging makes it practical for both service work and small-run assembly.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale 4-40 threaded hex standoff for PCB spacing and support\u003c\/li\u003e\n\u003cli\u003e2 inches overall length with 0.25-inch thread depth\u003c\/li\u003e\n\u003cli\u003eHex body is 0.1875 inches wide across flats for wrench-driven installation\u003c\/li\u003e\n\u003cli\u003eSteel construction with clear zinc chromate finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMeets ASTM B633 Type 1 and QQ-S-633 finish standards\u003c\/li\u003e\n\u003cli\u003eLength tolerance of -0.005 to +0.005 inches for consistent stack height\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation standoff for any circuit board assembly requiring a 4-40 female hex standoff with a 2-inch overall length in an inch-measurement system.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by licensed electricians or electronics technicians during panel assembly or board-level service. Power down and de-energize the control assembly before handling any circuit boards or standoffs. Use an appropriately sized hex wrench or nutdriver on the 0.1875-inch flats to seat the standoff without over-torquing, which can strip the thread or crack the PCB substrate. Follow applicable electrical codes and the equipment manufacturer's assembly specifications when replacing standoffs in live control panels.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.005 to +0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Clear Zinc Chromate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASTM B633 Type 1, QQ-S-633\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ELECTRO HARDWARE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: P405M12F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51738174816562,"sku":"P405M12F21440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/69be0ea513ec4cbce20afd5016302ef1_df81fda7-e91d-45a5-89f0-a276a3ec79e3.jpg?v=1788796602","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p405m12f21440-hex-standoff-4-40-2in","provider":"Voomi Supply","version":"1.0","type":"link"}