{"product_id":"machine-screws-100-phillips-flat-steel-black-zinc-4-40-x-3-8_0406mp1bzkc","title":"#4-40 X 3\/8\" Machine Screws | Flat Head | Phillips Drive | Steel Black Zinc (10000\/Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for precision and reliability, these Machine Screws deliver secure fastening in a compact 4-40 size. Featuring a Phillips drive and a flat, countersunk head, they sit flush for a clean, professional finish in a range of assemblies.\u003c\/p\u003e \u003cp\u003eCrafted from sturdy steel and finished with black zinc, they resist corrosion and provide lasting performance in electronics enclosures, control panels, appliances, and machinery. The \u003cb\u003e4-40 thread\u003c\/b\u003e and \u003cb\u003e3\/8 inch length\u003c\/b\u003e ensure a tight fit in tapped holes or with compatible nuts.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDrive:\u003c\/b\u003e Phillips\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHead style:\u003c\/b\u003e Flat, countersunk\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Black zinc\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e 4-40\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 3\/8 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Electronics enclosures, control panels, home and automotive hardware, and general mechanical assemblies\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor best results, ensure you have the correct pilot hole and a compatible nut or tapped hole. These screws are designed for general purpose fastening where a low-profile, corrosion-resistant fastener is required.\u003c\/p\u003e \u003cp\u003eAdd these \u003cb\u003ePhillips flat steel machine screws\u003c\/b\u003e in the \u003cb\u003e4-40 x 3\/8\"\u003c\/b\u003e size to your hardware kit and enjoy reliable performance across projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50344498233623,"sku":"0406MP1BZKC","price":412.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/1412MP1BZKC_c39e186c-370d-4077-9036-8f86d3734010.png?v=1747173641","url":"https:\/\/mutualscrew.com\/products\/machine-screws-100-phillips-flat-steel-black-zinc-4-40-x-3-8_0406mp1bzkc","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}