{"product_id":"electro-hardware-jax107m12f21a-jack-screw-4-40-zinc-steel","title":"Electro Hardware JAX107M12F21A Jack Screw 4-40 Zinc Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE JAX107M12F21A is a 4-40 threaded jack screw used to secure panel-mount connectors and electronic assemblies. Machined from Grade 2 steel with a zinc plating for corrosion resistance, this fastener features a hex head measuring 3\/16 inches across flats and a head height of 3\/16 inches. Thread length is 9\/16 inches with a thread depth of 0.1 inches and a Class 2A\/2B fit for standard tolerance applications. Each unit ships with one lock washer, one nut, and two flat washers, making it a ready-to-install hardware kit for technicians working with D-sub connectors and panel-mount components.\u003c\/p\u003e\n\u003cp\u003eThis jack screw is suited for use in electronics assembly, control panel fabrication, and enclosure connector installations. It is commonly installed in HVAC control boards, electrical enclosures, and industrial panel assemblies where 4-40 threaded standoffs or D-sub connector hardware is required. The included hardware kit supports direct installation without the need to source additional mating fasteners. Meets fastener standard QQ-S-633. Minimum order quantity is 50 pieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 thread size with 9\/16 inch thread length for standard D-sub and panel-mount connector applications\u003c\/li\u003e\n  \u003cli\u003eHex head design, 3\/16 inches across flats, compatible with standard hex drivers and wrenches\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction with zinc plating for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eThread fit class 2A (external) \/ 2B (internal) for standard tolerance mating\u003c\/li\u003e\n  \u003cli\u003eIncludes one lock washer, one nut, and two flat washers per unit\u003c\/li\u003e\n  \u003cli\u003eMeets fastener standard QQ-S-633\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation fastener for 4-40 threaded panel-mount and D-sub connector applications in electronic enclosures and control panels.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by electronics technicians or electricians during control panel assembly or connector service. Power down all affected circuits before handling internal panel hardware. Use a properly sized hex driver or wrench sized for 3\/16 inch across flats to avoid rounding the head. Do not overtighten, as Grade 2 fasteners at this thread size have limited torque capacity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 9\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 0.1 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Fit Class\u003c\/strong\u003e: 2B (Internal) \/ 2A (External)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Shape\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 3\/16 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\/Coating\u003c\/strong\u003e: Zinc Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: QQ-S-633\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: 1 Lock Washer, 1 Nut, 2 Flat Washers\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: 0.64 pounds\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: ELECTRO HARDWARE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: JAX107M12F21A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51738270138674,"sku":"JAX107M12F21A","price":37.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0406d9dc1285b68b2e54c19e0807e211.jpg?v=1788797430","url":"https:\/\/voomisupply.com\/products\/electro-hardware-jax107m12f21a-jack-screw-4-40-zinc-steel","provider":"Voomi Supply","version":"1.0","type":"link"}