{"product_id":"cap-screws-flat-socket-alloy-thermal-black-oxide-5-16-18-x-3-4","title":"5\/16-18 X 3\/4\" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eCap Screws Flat Socket Alloy Thermal Black Oxide 5\/16-18 x 3\/4 are engineered to deliver high-strength, reliable fastening in a compact form factor. The flat socket head sits flush in countersunk recesses, reducing snagging and enabling a clean appearance in precision assemblies.\u003c\/p\u003e \u003cp\u003eDesigned for demanding environments, these cap screws are made from alloy steel for superior strength and durability. The thermal black oxide finish enhances corrosion resistance and provides a discreet, anti-glare surface suitable for machinery and automotive applications.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eHead style:\u003c\/b\u003e Flat Socket (socket cap) head\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Alloy steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Thermal Black Oxide\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread:\u003c\/b\u003e 5\/16-18 UNC\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 3\/4 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDrive:\u003c\/b\u003e Hex drive (Allen key)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for automotive assemblies, machinery, equipment maintenance, and any project requiring strong, flush-head fasteners with a corrosion-resistant finish. Great for applications where a low-profile head is essential or where clearance around the head matters.\u003c\/p\u003e \u003ch4\u003eInstallation Tips\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003eChoose the correct hex key size to avoid stripping the drive.\u003c\/li\u003e \u003cli\u003eEnsure proper threading and alignment to prevent cross-threading.\u003c\/li\u003e \u003cli\u003eLubricate the threads if using in high-vibration or load-bearing applications to reduce galling.\u003c\/li\u003e \u003cli\u003eFor torque guidelines and compatibility, refer to your equipment’s specification sheet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50350841889047,"sku":"3112CSFBB","price":24.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0606CSF188BYW_83b48cde-8eac-438b-b0ac-1fa1d9182336.jpg?v=1744919554","url":"https:\/\/mutualscrew.com\/products\/cap-screws-flat-socket-alloy-thermal-black-oxide-5-16-18-x-3-4","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}