{"product_id":"machine-screws-undercut-flat-zinc-plated-torx-alt-4-40-x-3-8_0406mtukc","title":"#4-40 X 3\/8\" Machine Screws | Undercut Flat Head | Six Lobe Drive | Steel Zinc Plated (10000\/Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eMachine Screws Undercut Flat Zinc Plated Torx Alt 4\/40 X 3\/8\u003c\/b\u003e combines reliability and performance for precise fastening in electronics, machinery, and metal enclosures. The undercut flat head sits flush with the surface, delivering a clean, professional look while reducing protrusion in tight spaces.\u003c\/p\u003e \u003cp\u003eFeaturing a zinc-plated finish for corrosion resistance and a Torx Alt drive for high torque transfer and reduced cam-out, these machine screws are ideal for assemblies where secure, lasting fastenings matter. The 4\/40 UNC thread size and 3\/8\" length make them a versatile choice for a wide range of projects.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eUndercut Flat Head:\u003c\/b\u003e flush seating reduces profile and helps with neat, finished installations.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTorx Alt Drive:\u003c\/b\u003e better torque handling and less stripping than Phillips or other drives.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eZinc Plated Finish:\u003c\/b\u003e provides corrosion resistance for long-lasting performance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread Size and Length:\u003c\/b\u003e 4-40 UNC, 3\/8\" length for compatibility with standard threaded holes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eApplications include mounting small components, electronics enclosures, cabinetry, and precision machinery where space is at a premium and a clean look is essential.\u003c\/p\u003e \u003cp\u003eWhether you are assembling hobby projects or professional equipment, these machine screws offer dependable strength, durable finish, and easy installation with a Torx driver. Order these 4-40 x 3\/8 in undercut flat screws in zinc plating for a robust fastening solution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50345497002263,"sku":"0406MTUKC","price":329.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0604MTUKC_b6973693-2b25-4c57-88e1-a83988c2dd2a.webp?v=1749080480","url":"https:\/\/mutualscrew.com\/products\/machine-screws-undercut-flat-zinc-plated-torx-alt-4-40-x-3-8_0406mtukc","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}