{"product_id":"electro-hardware-p325m03f21440-female-hex-standoff-4-40","title":"Electro Hardware P325M03F21440 Female Hex Standoff 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE P325M03F21440 is a female hex circuit board standoff designed to mount and space printed circuit boards within electronic enclosures and control assemblies. This fully threaded standoff accepts a 4-40 machine screw thread and provides a 3\/4 inch overall length with a matching 3\/4 inch thread depth, allowing full thread engagement across the entire body. The hexagonal body measures 3\/16 inches across flats, providing a clean wrench grip for installation. Manufactured from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, the P325M03F21440 delivers reliable corrosion resistance and dimensional stability in light-duty board mounting applications.\u003c\/p\u003e\u003cp\u003eThis standoff is used in residential and commercial electronic control assemblies, HVAC control boards, low-voltage circuit board enclosures, and general electrical equipment where PCB spacing and secure mounting are required. The female thread configuration accepts a mating screw from above while threading into a base panel or chassis below, creating a precise and stable standoff column. Technicians working on control board replacements or custom panel builds in HVAC, electrical, and instrumentation applications will find this a standard fit for 4-40 threaded board mounting layouts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale 4-40 threaded body — fully threaded with 3\/4 inch thread depth for maximum engagement\u003c\/li\u003e\n\u003cli\u003eHexagonal body shape, 3\/16 inches across flats — compatible with standard nut drivers and hex keys\u003c\/li\u003e\n\u003cli\u003eBrass construction with clear zinc chromate finish for corrosion resistance in control enclosures\u003c\/li\u003e\n\u003cli\u003eMeets ASTM B633 Type 1 and QQ-B-626 Comp 22 fastener standards\u003c\/li\u003e\n\u003cli\u003e3\/4 inch overall length provides consistent PCB standoff height\u003c\/li\u003e\n\u003cli\u003eLength tolerance of -0.005 to +0.005 inches for consistent stacking in multi-board assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 threaded hardware in inch-measurement fastener systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electricians, electronics technicians, or HVAC service professionals during control board mounting or panel fabrication. De-energize and lock out all power to the control assembly before servicing any circuit board hardware. Use a appropriately sized nut driver or hex wrench matched to the 3\/16 inch across-flats dimension to avoid rounding the hex body. Follow applicable NEC guidelines and equipment manufacturer torque recommendations when securing standoffs in control enclosures.\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\u003eOverall Length\u003c\/strong\u003e: 3\/4 inches (0.750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 3\/16 inches (0.1875 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: Brass\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-B-626 Comp 22\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 5\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: P325M03F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51744481182002,"sku":"P325M03F21440","price":17.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/69be0ea513ec4cbce20afd5016302ef1_7f092a6d-77d5-4391-b51e-ca121dc82778.jpg?v=1788857169","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p325m03f21440-female-hex-standoff-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}