{"product_id":"electro-hardware-ths3004m07f16-thumb-screw-4-40-unc","title":"Electro Hardware THS3004M07F16 Thumb Screw 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE THS3004M07F16 is a 303 stainless steel thumb screw with a knurled head, designed for tool-free fastening in light-duty mechanical and electrical assemblies. The 4-40 UNC thread and 1\/2 inch thread length make it suitable for thin panels, enclosures, and access covers where frequent removal is required. The knurled head measures 5\/16 inches in diameter and 3\/16 inches in height, giving enough grip surface for reliable hand-tightening. The uncoated 303 stainless steel construction provides corrosion resistance in moderate environments without surface treatment.\u003c\/p\u003e\n\u003cp\u003eThis thumb screw is used in applications where hand-adjustable fastening is needed without tools, including instrument panels, electrical enclosures, HVAC control boxes, and equipment access covers. The 4-40 thread size is common in light sheet metal and panel work. It is installed by electricians, HVAC technicians, and equipment assemblers working with small-format fasteners in both field service and bench assembly settings. The 11\/16 inch overall length accommodates standard panel thicknesses typical of light commercial and residential equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e303 stainless steel construction for corrosion resistance in moderate-exposure environments\u003c\/li\u003e\n  \u003cli\u003eKnurled head for secure hand-tightening without tools\u003c\/li\u003e\n  \u003cli\u003e4-40 UNC thread standard for compatibility with common light-gauge panel hardware\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch thread length suits thin panel and enclosure fastening\u003c\/li\u003e\n  \u003cli\u003eUncoated finish preserves base material properties without added plating\u003c\/li\u003e\n  \u003cli\u003eWithout-shoulder design for flush or standard panel mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service fastener for assemblies using 4-40 UNC thumb screws in light-duty panel, enclosure, and equipment cover applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall by hand into a pre-tapped 4-40 UNC threaded hole or a mating threaded insert. Power down all electrical equipment before accessing panels or enclosures secured by these fasteners. Do not use power tools to drive thumb screws, as the knurled head is designed for hand operation only and over-torquing may damage the head or strip the thread. Follow applicable NEC or equipment manufacturer guidelines when accessing energized enclosures.\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 Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 11\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Knurled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 303\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Type\u003c\/strong\u003e: Without Shoulder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASTM B633; QQ-A-225A Comp 2; QQ-B-626B Comp 22; QQ-N-290A; QQ-S-633; QQ-S-763; T-3; Type 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161516\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.52 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: THS3004M07F16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51732731724082,"sku":"THS3004M07F16","price":23.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/089603be8ed25c382e5b06b448da7164_6e2b44a5-be59-480d-82df-8aa447f79789.jpg?v=1788746112","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ths3004m07f16-thumb-screw-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}