{"product_id":"cap-screws-flat-socket-alloy-thermal-black-oxide-5-16-18-x-2-1-2","title":"5\/16-18 X 2-1\/2\" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCap Screws Flat Socket Alloy Thermal Black Oxide 5\/16-18 X 2 1\/2\u003c\/b\u003e are high-strength fasteners designed for dependable assembly in machinery, automotive, and industrial equipment. Featuring a flat socket head, these cap screws sit flush to maintain a clean, professional finish in tight spaces.\u003c\/p\u003e \u003cp\u003eConstructed from alloy steel and finished with a thermal black oxide coating, they combine strength with a durable, low-gloss appearance suitable for wet, oily, or dusty environments where corrosion protection is adequate for standard industrial use.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThread size: 5\/16-18 UNC\u003c\/li\u003e \u003cli\u003eLength: 2-1\/2 inches\u003c\/li\u003e \u003cli\u003eFlat socket head cap screw\u003c\/li\u003e \u003cli\u003eMaterial: Alloy steel\u003c\/li\u003e \u003cli\u003eFinish: Thermal black oxide\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThread: 5\/16-18 UNC\u003c\/li\u003e \u003cli\u003eLength: 2-1\/2 in\u003c\/li\u003e \u003cli\u003eHead style: Flat socket\u003c\/li\u003e \u003cli\u003eDrive type: Hex socket\u003c\/li\u003e \u003cli\u003eMaterial: Alloy steel\u003c\/li\u003e \u003cli\u003eFinish: Thermal black oxide\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMachinery assembly\u003c\/li\u003e \u003cli\u003eAutomotive and heavy equipment\u003c\/li\u003e \u003cli\u003eIndustrial manufacturing and maintenance\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cb\u003eWhy choose these cap screws?\u003c\/b\u003e They provide a strong, reliable fastening solution with a low-profile head that reduces snag risk in confined spaces. The thermal black oxide finish adds a durable, professional appearance and helps conceal wear over time. Ideal for standard industrial environments where 5\/16-18 UNC threads and 2-1\/2\" length are required.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50350842937623,"sku":"3140CSFBB","price":72.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0606CSF188BYW_637c9f04-a47c-4316-8045-8af04c752cbb.jpg?v=1746804676","url":"https:\/\/mutualscrew.com\/products\/cap-screws-flat-socket-alloy-thermal-black-oxide-5-16-18-x-2-1-2","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}