{"product_id":"cap-screws-button-socket-steel-black-oxide-4-40-x-1-2","title":"#4-40 X 1\/2\" Button Head Cap Screws | Steel Black Oxide (1 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your assemblies with these Cap Screws Button Socket, crafted from durable steel and finished in black oxide for a sleek, low-profile look. The 4-40 thread size and 1\/2\" length make these small but mighty fasteners ideal for precision projects, electronics enclosures, and lightweight mechanical assemblies.\u003c\/p\u003e \u003cp\u003eDesigned for reliability, these button head socket cap screws deliver a clean, flush appearance while providing strong holding power. The internal hex drive (Allen drive) ensures easy installation with a standard Allen wrench, reducing the risk of slippage and cam-out in tight spaces.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e 4-40\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 1\/2\"\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHead style:\u003c\/b\u003e Button head socket cap screw\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDrive:\u003c\/b\u003e Internal hex (Allen)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Black oxide\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis combination of steel construction and black oxide finish provides durability with a corrosion-resistant surface and a low-reflective, professional appearance. Perfect for applications where a compact, secure fastener is required without protruding heads, such as electronics housings, cabinetry, machinery dashboards, and precision instruments.\u003c\/p\u003e \u003cp\u003eAdd these cap screws to your toolkit and ensure fast, reliable assemblies with a finish that looks as good as it performs. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50350676476183,"sku":"0408CSBKC","price":17.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0404CSB188BYW_b564c662-e73b-41d0-aa65-09573d0c8eb6.jpg?v=1747423224","url":"https:\/\/mutualscrew.com\/products\/cap-screws-button-socket-steel-black-oxide-4-40-x-1-2","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}