{"product_id":"electro-hardware-ths1004m04f16-aluminum-thumb-screw-4-40","title":"Electro Hardware THS1004M04F16 Aluminum Thumb Screw 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE THS1004M04F16 is an aluminum thumb screw with a knurled head and integral shoulder, designed for tool-free fastening in panel assemblies, enclosures, and instrumentation hardware. The 4-40 UNC thread is a standard fine-pitch size widely used in electrical panels, control boxes, and light-duty mechanical assemblies. The knurled head provides reliable finger grip for hand-tightening without a driver. Overall length is 0.75 inches, with an uncoated aluminum body that keeps weight minimal. The shoulder diameter is 0.312 inches and shoulder length is 0.125 inches, making this screw suitable for applications where a locating or bearing surface is needed alongside the threaded section.\u003c\/p\u003e\n\u003cp\u003eThis thumb screw is used in residential and commercial electrical enclosures, HVAC control panels, low-voltage equipment covers, and instrumentation cabinets where frequent access is required. The 4-40 UNC thread size is common in light sheet-metal and extruded aluminum assemblies. Electricians, HVAC technicians, and panel fabricators install this fastener wherever hand-removal of covers or sub-panels is a routine service requirement. It ships and is sold individually, with a minimum order quantity of 10 pieces per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread for compatibility with standard light-duty panel and enclosure hardware\u003c\/li\u003e\n  \u003cli\u003eKnurled head allows tool-free hand tightening and removal\u003c\/li\u003e\n  \u003cli\u003eIntegral shoulder at 0.312 inches diameter and 0.125 inches length provides a positive locating surface\u003c\/li\u003e\n  \u003cli\u003eUncoated aluminum construction keeps weight low and resists galvanic issues in aluminum enclosures\u003c\/li\u003e\n  \u003cli\u003eMeets QQ-A-225A Comp 2 and T-3 material standards\u003c\/li\u003e\n  \u003cli\u003eHead diameter of 0.375 inches and head height of 0.1875 inches provide a low-profile grip surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or stock fastener for electrical enclosures, control panels, and instrumentation assemblies that use 4-40 UNC threaded hardware with a knurled thumb screw interface.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove by hand only. Do not use a driver or wrench on the knurled head, as aluminum threads and the head profile are not rated for torqued installation. Before servicing any electrical enclosure or control panel, de-energize the equipment and verify lockout-tagout procedures per applicable NEC requirements. Confirm thread engagement depth in the mating component is sufficient for the fastener application before finalizing the installation.\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: 0.75 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: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Type\u003c\/strong\u003e: With Shoulder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Diameter\u003c\/strong\u003e: 0.312 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: QQ-A-225A Comp 2, T-3\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: 0.84 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: THS1004M04F16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51733691400498,"sku":"THS1004M04F16","price":47.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e65a26e1d14e7b8fa8ae0cd4148ddfca_029a9d4b-c1c8-4f07-b82e-992b03f0315f.jpg?v=1788758285","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ths1004m04f16-aluminum-thumb-screw-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}