{"product_id":"electro-hardware-ths1139m01f07-brass-thumb-screw-1-4-20","title":"Electro Hardware THS1139M01F07 Brass Thumb Screw 1\/4-20","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE THS1139M01F07 is a brass thumb screw designed for hand-tightened fastening applications where tools are not practical or permitted. Built to a 1\/4-20 UNC thread standard, this screw features a knurled head for secure finger grip and a shoulder configuration that helps control insertion depth and alignment. The head measures 0.5 inches in diameter and 0.25 inches in height. The overall length is 1 inch. Finished in nickel over a brass body, it offers corrosion resistance suitable for light-duty panel, enclosure, and instrument assembly work. Electricians, HVAC technicians, and panel fabricators are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThis thumb screw is suited for applications where frequent removal and reinstallation is required without tools — including electrical enclosure covers, instrumentation panels, HVAC access panels, and control cabinet assemblies. The knurled head provides reliable grip even in tight-clearance environments. The shoulder design helps locate the fastener consistently in matching threaded inserts or captured nuts. It is manufactured to inch-system dimensions and conforms to multiple material and finish standards, making it appropriate for both original equipment assembly and service replacement use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC thread for compatibility with standard inch-system hardware\u003c\/li\u003e\n  \u003cli\u003eKnurled head profile for secure hand tightening without tools\u003c\/li\u003e\n  \u003cli\u003eWith-shoulder design aids alignment and depth control during installation\u003c\/li\u003e\n  \u003cli\u003eBrass construction with nickel finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e0.5-inch head diameter and 0.25-inch head height for low-profile panel applications\u003c\/li\u003e\n  \u003cli\u003eMeets ASTM B633 and multiple federal material and finish specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for applications using 1\/4-20 UNC threaded inserts in panels, enclosures, and instrumentation assemblies requiring hand-removable hardware.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires no tools under normal hand-tightening conditions. Ensure the mating threaded insert or nut is clean and free of debris before threading to avoid cross-threading the brass body. Do not use a wrench or driver on the knurled head, as brass is a soft material and the head may deform under excessive torque. Follow applicable electrical or mechanical enclosure codes when using this fastener on access panels that cover energized components.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\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: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Diameter\u003c\/strong\u003e: 0.437 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\u003eHead Type\u003c\/strong\u003e: Knurled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Type\u003c\/strong\u003e: With Shoulder\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: Nickel\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5.84 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: THS1139M01F07\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51744587809074,"sku":"THS1139M01F07","price":23.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e65a26e1d14e7b8fa8ae0cd4148ddfca_4b2b6dec-9a14-4709-a98f-974a7386de02.jpg?v=1788858672","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ths1139m01f07-brass-thumb-screw-1-4-20","provider":"Voomi Supply","version":"1.0","type":"link"}