{"product_id":"306651-tsos","title":"Atomic Barra Tool Steel Headstuds","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        \/* ATOMIC PERFORMANCE THEME STYLES - LIGHT MODE *\/\n        .atomic-container {\n            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n            max-width: 1000px;\n            margin: 0 auto;\n            background-color: #ffffff;\n            color: #333333;\n            line-height: 1.6;\n            border: 1px solid #e0e0e0;\n            box-sizing: border-box;\n        }\n\n        \/* BRAND COLORS *\/\n        :root {\n            --atomic-orange: #E4522B;\n            --atomic-purple: #663399;\n            --light-grey: #f4f4f4;\n            --border-color: #ddd;\n        }\n\n        \/* TYPOGRAPHY *\/\n        .atomic-header {\n            text-align: center;\n            padding: 40px 20px;\n            border-bottom: 4px solid var(--atomic-orange);\n            background-color: #fafafa;\n            width: 100%;\n        }\n\n        .atomic-title {\n            color: var(--atomic-orange);\n            font-size: 2.5rem;\n            text-transform: uppercase;\n            margin: 0;\n            font-weight: 900;\n            letter-spacing: 1px;\n            line-height: 1.1;\n        }\n\n        .atomic-subtitle {\n            color: #555;\n            font-size: 1.2rem;\n            margin-top: 10px;\n            font-weight: 400;\n            text-transform: uppercase;\n            letter-spacing: 2px;\n        }\n\n        h2 {\n            color: #222;\n            text-transform: uppercase;\n            font-size: 1.8rem;\n            margin-bottom: 15px;\n            border-left: 5px solid var(--atomic-orange);\n            padding-left: 15px;\n        }\n\n        h3 {\n            color: #333;\n            font-size: 1.4rem;\n            margin-top: 0;\n            font-weight: 700;\n        }\n\n        p {\n            margin-bottom: 15px;\n            color: #444;\n        }\n\n        strong {\n            color: #000;\n        }\n\n        \/* LAYOUT GRIDS *\/\n        .atomic-section {\n            padding: 40px;\n            border-bottom: 1px solid #eee;\n        }\n\n        .atomic-grid {\n            display: grid;\n            grid-template-columns: 1fr 1fr;\n            gap: 40px;\n            align-items: center;\n        }\n\n        \/* IMAGES *\/\n        .atomic-img {\n            width: 100%;\n            height: auto;\n            border-radius: 4px;\n            border: 1px solid #ddd;\n            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);\n            background-color: #eee; \/* Placeholder background *\/\n            min-height: 250px;\n            object-fit: cover;\n        }\n\n        .img-caption {\n            font-size: 0.85rem;\n            color: #666;\n            text-align: center;\n            margin-top: 8px;\n            font-style: italic;\n        }\n\n        \/* LISTS *\/\n        ul.atomic-list {\n            list-style: none;\n            padding: 0;\n        }\n\n        ul.atomic-list li {\n            padding-left: 25px;\n            position: relative;\n            margin-bottom: 10px;\n            color: #444;\n        }\n\n        ul.atomic-list li::before {\n            content: \"►\";\n            color: var(--atomic-orange);\n            position: absolute;\n            left: 0;\n        }\n\n        \/* TABLE STYLES *\/\n        .atomic-table {\n            width: 100%;\n            border-collapse: collapse;\n            margin-top: 20px;\n            font-size: 0.9rem;\n        }\n        \n        .atomic-table th {\n            background-color: var(--atomic-purple);\n            color: white;\n            padding: 12px;\n            text-align: left;\n        }\n        \n        .atomic-table td {\n            padding: 12px;\n            border-bottom: 1px solid #eee;\n        }\n        \n        .atomic-table tr:nth-child(even) {\n            background-color: #f9f9f9;\n        }\n\n        \/* CTA BUTTON *\/\n        .atomic-cta {\n            display: inline-block;\n            background-color: var(--atomic-orange);\n            color: #fff;\n            padding: 15px 30px;\n            font-size: 1.2rem;\n            font-weight: bold;\n            text-transform: uppercase;\n            text-decoration: none;\n            border-radius: 4px;\n            margin-top: 20px;\n            text-align: center;\n            box-sizing: border-box;\n            transition: background 0.3s;\n            cursor: pointer;\n            border: none;\n        }\n\n        .atomic-cta:hover {\n            background-color: #c03d1b;\n        }\n\n        \/* RESPONSIVE *\/\n        @media (max-width: 768px) {\n            .atomic-grid {\n                grid-template-columns: 1fr;\n            }\n\n            .atomic-title {\n                font-size: 1.8rem;\n            }\n\n            .atomic-section {\n                padding: 20px;\n            }\n            \n            .atomic-table {\n                font-size: 0.8rem;\n            }\n        }\n    \u003c\/style\u003e\n\u003cdiv class=\"atomic-container\"\u003e\n\u003c!-- HEADER (Full Width) --\u003e\n\u003cdiv class=\"atomic-header\"\u003e\n\u003ch1 class=\"atomic-title\"\u003eAtomic Tool Steel Head Studs\u003c\/h1\u003e\n\u003cdiv class=\"atomic-subtitle\"\u003eH13 Tool Steel | CA625 Strength at 1\/3 the Price\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHY YOU SHOULD UPGRADE SECTION --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eWhy Pay 3x More for the Same Strength?\u003c\/h2\u003e\n\u003cp\u003eIn the world of high-horsepower fasteners, you typically have two choices: standard chromoly studs (good for ~800hp) or exotic super-alloy studs like Custom Age 625+ (good for 2000hp+, but with an eye-watering price tag). For most serious Barra builds, the standard stud is too weak, but the 625+ is overkill on the wallet.\u003c\/p\u003e\n\u003c!-- DID YOU KNOW SECTION --\u003e\n\u003cdiv style=\"background-color: #f8f4fc; border-left: 5px solid var(--atomic-purple); padding: 20px; margin: 25px 0; border-radius: 4px;\"\u003e\n\u003cstrong style=\"color: var(--atomic-purple); font-size: 1.1rem; display: block; margin-bottom: 8px;\"\u003e💡 DID YOU KNOW?\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 0.95rem;\"\u003e\u003cstrong\u003eH13 Tool Steel matches CA625 strength.\u003c\/strong\u003e Our H13 studs are rated to ~270,000 psi tensile strength—effectively identical to the ~260-280k psi rating of ARP CA625+ studs. The difference? You can buy an Atomic kit for nearly \u003cstrong\u003eone-third of the price\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: var(--atomic-purple); border-left-color: var(--atomic-purple);\"\u003eThe Atomic Solution\u003c\/h2\u003e\n\u003cp\u003eWe filled the gap in the market by manufacturing our studs from \u003cstrong\u003eH13 Tool Steel\u003c\/strong\u003e. To guarantee maximum fatigue resistance, our threads are \u003cstrong\u003ecold-rolled\u003c\/strong\u003e rather than cut, and the entire stud undergoes a specialized \u003cstrong\u003eheat-treatment\u003c\/strong\u003e process to lock in superior structural integrity. This material offers exceptional thermal stability and tensile strength, making it perfect for high-boost applications where head lift is a constant threat. Plus, we added features usually reserved for the most expensive kits, like external hex drives for easy installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_SOHC_INTECH_Tool_Steel_Headstud_Kit.png?v=1746748863\" alt=\"H13 Tool Steel headstuds\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eHeat-treated H13 Tool Steel: The Goldilocks of Fasteners.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURE: HEX DRIVE \u0026 WASHERS --\u003e\n\u003cdiv style=\"background-color: #fafafa;\" class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/atomic_barra_H13_tool_steel_head_studs.jpg?v=1756800407\" alt=\"Atomic Barra Tool Steel Headstuds with OS Washers\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eExternal 8mm Hex for easy install\/removal.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e2. Mechanic-Friendly Features\u003c\/h2\u003e\n\u003cp\u003eWe build engines, so we know the frustration of installing studs with only an Allen key slot. We fixed that.\u003c\/p\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e8mm External Hex Tip:\u003c\/strong\u003e Every stud features a machined hex tip, allowing you to easily wind them into the block by hand or with a socket. No more double-nutting or struggling with Allen keys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversized Washers:\u003c\/strong\u003e Included in our premium kits, these spread the immense clamping load over a wider area of the alloy head, preventing the washer from crushing into the soft aluminium under high torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e Designed to be a drop-in upgrade for the factory M12 head bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPARISON TABLE --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003ch2\u003eHead Stud Comparison\u003c\/h2\u003e\n\u003ctable class=\"atomic-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade \/ Material\u003c\/th\u003e\n\u003cth\u003eTensile Strength (PSI)\u003c\/th\u003e\n\u003cth\u003ePrice Bracket\u003c\/th\u003e\n\u003cth\u003eKey Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAtomic H13 Tool Steel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e~270,000+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e$$ (Best Value)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eStronger than L19 and ARP2000.\u003c\/strong\u003e Excellent thermal stability.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eARP 2000\u003c\/td\u003e\n\u003ctd\u003e~220,000\u003c\/td\u003e\n\u003ctd\u003e$$\u003c\/td\u003e\n\u003ctd\u003eIndustry standard. Good all-rounder but can stretch under extreme boost.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustom Age 625+\u003c\/td\u003e\n\u003ctd\u003e~260,000 – 280,000\u003c\/td\u003e\n\u003ctd\u003e$$$$$ (Extreme)\u003c\/td\u003e\n\u003ctd\u003eSuper-alloy. Extremely strong but typically costs 3-4x more.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- TECH SPECS --\u003e\n\u003cdiv style=\"text-align: center;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange);\"\u003eTech Specs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e H13 Tool Steel\u003cbr\u003e\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e ~270,000 psi\u003cbr\u003e\u003cstrong\u003eThread Size:\u003c\/strong\u003e M12 (Standard)\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e 8mm External Hex Tip\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Ford Barra DOHC 4.0L\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- IMPORTANT NOTES \u0026 WARNINGS --\u003e\n\u003cdiv style=\"background-color: #fffdf0; border-left: 6px solid #d4a017;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: #b08d55; margin-top: 0; text-transform: uppercase;\"\u003e⚠️ Installation Notes\u003c\/h3\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e You MUST use the supplied moly-based assembly lubricant on the threads and washers to ensure accurate torque readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWashers:\u003c\/strong\u003e Ensure the chamfered side of the washer faces UP towards the nut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Sequence:\u003c\/strong\u003e Follow the included torque sequence carefully. Do not over-torque, as these studs provide significantly higher clamping force than OEM bolts at the same torque value.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- CTA FOOTER --\u003e\n\u003cdiv style=\"text-align: center; border-bottom: none;\" class=\"atomic-section\"\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\u003ca class=\"atomic-cta\" href=\"#\"\u003eAdd to Cart\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atomic Performance Products","offers":[{"title":"12mm Studs- Std Size Washers","offer_id":42816327942215,"sku":"306651-TS","price":560.01,"currency_code":"AUD","in_stock":true},{"title":"12mm Studs- OS Washers (most popular)","offer_id":42816327974983,"sku":"306651-K-12mm","price":590.0,"currency_code":"AUD","in_stock":true},{"title":"14mm Studs- OS Washers","offer_id":42816328007751,"sku":"306653-OS","price":670.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Barra_Tool_Steel_Headstuds_with_OS_Washers.jpg?v=1779748555","url":"https:\/\/www.ffpgarage.com.au\/products\/306651-tsos","provider":"FFP","version":"1.0","type":"link"}