{"product_id":"m6-m8-m10-m12-grade-10-9-black-countersunk-hex-socket-machine-screws","title":"M6 M8 M10 M12 Grade 10.9 Black Countersunk Hex Machine Screws","description":"\u003ch2\u003eJARBLUE M6–M12 Black Grade 10.9 Countersunk Hex Socket Machine Screws\u003c\/h2\u003e\n\u003cp\u003eUpgrade your fastening projects with these premium \u003cstrong\u003eGrade 10.9 Carbon Steel Flat Head Countersunk Machine Screws\u003c\/strong\u003e from \u003cstrong\u003eJARBLUE\u003c\/strong\u003e. Available in sizes M6, M8, M10, and M12, these hex socket cap screws deliver exceptional tensile strength and a flush, clean finish — ideal for demanding mechanical assemblies, fabrication work, and DIY projects where a low-profile head is required.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade 10.9 Carbon Steel\u003c\/strong\u003e — High-strength alloy construction for superior durability and torque resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlat Countersunk Head\u003c\/strong\u003e — Sits flush with the surface for a clean, professional look and reduced snag points\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Socket Drive\u003c\/strong\u003e — Allows precise tightening with an Allen\/hex key, even in tight or recessed spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack Oxide Finish\u003c\/strong\u003e — Provides corrosion resistance and a sleek, uniform appearance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Size Options\u003c\/strong\u003e — Available in M6, M8, M10, and M12 thread diameters to suit a wide range of applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity Packs of 1–10 pcs\u003c\/strong\u003e — Flexible ordering to match your exact project needs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified\u003c\/strong\u003e — Meets quality and safety standards for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJARBLUE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.9 (High Tensile)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlat \/ Countersunk\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHex Socket (Allen Key)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM6, M8, M10, M12\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack Oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMachinery and mechanical assemblies\u003c\/li\u003e\n  \u003cli\u003eAutomotive fabrication and chassis work\u003c\/li\u003e\n  \u003cli\u003eMetal fabrication and structural projects\u003c\/li\u003e\n  \u003cli\u003eFurniture and cabinetry hardware\u003c\/li\u003e\n  \u003cli\u003eGeneral DIY and home improvement tasks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes are available for these Grade 10.9 countersunk machine screws?\u003c\/h4\u003e\n\u003cp\u003eA: These JARBLUE countersunk hex socket screws are available in M6, M8, M10, and M12 thread diameters, with pack quantities ranging from 1 to 10 pieces so you can order exactly what you need for your project.\u003c\/p\u003e\n\u003ch4\u003eQ: What tool do I need to drive these flat head machine screws?\u003c\/h4\u003e\n\u003cp\u003eA: These screws feature a hex socket (Allen\/hex key) drive style. You will need the appropriate metric Allen key or hex bit that matches the socket size for your selected thread diameter (M6, M8, M10, or M12).\u003c\/p\u003e\n\u003ch4\u003eQ: Are these screws suitable for outdoor or high-stress applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Grade 10.9 carbon steel construction offers high tensile strength suitable for demanding mechanical and structural applications. The black oxide finish adds a layer of corrosion resistance, though for prolonged outdoor exposure in wet environments, additional protective coating may be recommended.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the flat countersunk head style mean?\u003c\/h4\u003e\n\u003cp\u003eA: A flat countersunk head sits flush with or below the surface of the material when installed in a countersunk hole, creating a smooth, snag-free surface. This is ideal for applications where a low-profile, clean finish is required.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes are available for these Grade 10.9 countersunk machine screws?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These JARBLUE countersunk hex socket screws are available in M6, M8, M10, and M12 thread diameters, with pack quantities ranging from 1 to 10 pieces so you can order exactly what you need for your project.\"}}, {\"@type\": \"Question\", \"name\": \"What tool do I need to drive these flat head machine screws?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These screws feature a hex socket (Allen\/hex key) drive style. 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