{"product_id":"cap-screws-flat-socket-alloy-thermal-black-oxide-4-40-x-1-2","title":"#4-40 X 1\/2\" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eCap Screws Flat Socket Alloy Thermal Black Oxide 4-40 x 1\/2 inch are precision fasteners designed for reliable, high-strength assemblies. Built from sturdy alloy steel and finished with a thermal black oxide, these screws deliver durable performance with a low-glare appearance suitable for electronics, machinery, and professional enclosures.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Alloy steel for excellent strength and part integrity.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Thermal black oxide provides corrosion resistance and a sleek, non-reflective surface.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e 4-40 UNC, a common precision thread standard for small hardware.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 1\/2 inch, ideal for compact assemblies and clean fits.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDrive type:\u003c\/b\u003e Internal hex (Allen) socket drive for secure tightening.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHead type:\u003c\/b\u003e Cap screw with flat socket design for streamlined profiles in tight spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Electronics enclosures, precision machinery, instrumentation, and hobby projects requiring dependable fasteners with a clean finish.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eEngineered for dependable performance across demanding environments, these cap screws simplify assembly and deliver consistent torque with minimal wear. Ideal for replacements or new builds that require 4-40 x 1\/2 inch socket cap screws with a durable alloy core and a discreet finish.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50350836449559,"sku":"0408CSFBB","price":9.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0606CSF188BYW_ba9a8864-7b23-4e17-a69d-dd32fce987fb.jpg?v=1747423189","url":"https:\/\/mutualscrew.com\/products\/cap-screws-flat-socket-alloy-thermal-black-oxide-4-40-x-1-2","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}