{"product_id":"m3-45mm-aluminium-knurled-thumb-screw","title":"M3 x 45mm Aluminium Knurled Thumb Screw – Long Reach Hand Grip Knob Bolt (Anodised Finish)","description":"\u003c!-- Part 1: Product Description HTML for Shopify --\u003e\n\u003cdiv class=\"hdiy-aluminum-thumb-screw-45\"\u003e\n  \u003c!-- Product Overview Section --\u003e\n  \u003ch2\u003e🔘 M3 x 45mm Aluminium Knurled Thumb Screw – Anodised Hand Grip Knob Bolt (Long Reach for Deep Access)\u003c\/h2\u003e\n  \u003cp\u003eYou need to reach a recessed adjustment point on a machine, a mould, or a bearing assembly – a standard thumbscrew is too short. This M3 x 45mm aluminium knurled thumb screw gives you the extra length you need, with a comfortable, diamond‑knurled head for tool‑less hand tightening. Made from 6061 aluminium with a durable anodised finish, it’s lightweight, corrosion‑resistant, and professional‑looking. The 45mm fully threaded stud (measured under the head) is perfect for applications where you need to span thick panels or reach deep into equipment. Ideal for machinery adjustments, precision moulds, jigs, and custom fixtures.\u003c\/p\u003e\n\n  \u003c!-- Features Section --\u003e\n  \u003ch2\u003e✨ Key Features – M3 x 45mm Aluminium Thumb Screw\u003c\/h2\u003e\n  \u003cul class=\"hdiy-feature-list\"\u003e\n    \u003cli\u003e🔘 \u003cstrong\u003eKnurled round head\u003c\/strong\u003e – Fine diamond knurling provides excellent fingertip grip for hand tightening – no tools required.\u003c\/li\u003e\n    \u003cli\u003e📏 \u003cstrong\u003eExtra long 45mm threaded stud (under head)\u003c\/strong\u003e – Fully threaded for maximum grip. Ideal for reaching through thick panels or deep bores.\u003c\/li\u003e\n    \u003cli\u003e⚖️ \u003cstrong\u003eLightweight 6061 aluminium\u003c\/strong\u003e – About 1\/3 the weight of steel. Non‑magnetic and thermally conductive.\u003c\/li\u003e\n    \u003cli\u003e🎨 \u003cstrong\u003eAnodised finish\u003c\/strong\u003e – Corrosion‑resistant, durable, and available in multiple colours (contact us for options).\u003c\/li\u003e\n    \u003cli\u003e🛡️ \u003cstrong\u003eM3 metric thread (3mm diameter, 0.5mm pitch)\u003c\/strong\u003e – Standard size for small machinery, electronics, and precision instruments.\u003c\/li\u003e\n    \u003cli\u003e✨ \u003cstrong\u003eHigh quality workmanship\u003c\/strong\u003e – Smooth, burr‑free surface, even threads, uniform force – no slipping or stripping.\u003c\/li\u003e\n    \u003cli\u003e🔧 \u003cstrong\u003eWidely used\u003c\/strong\u003e – Machinery, precision moulds, bearing assembly, jigs, fixtures, and industrial equipment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- Specifications Table --\u003e\n  \u003ch2\u003e📏 Specifications – M3 x 45mm Knurled Thumb Screw (Aluminium)\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrapper\" style=\"overflow-x: auto;\"\u003e\n    \u003ctable class=\"hdiy-specs-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eThread Diameter (M)\u003c\/th\u003e\n          \u003cth\u003eThread Pitch (mm)\u003c\/th\u003e\n          \u003cth\u003eThread Length (mm, under head) *\u003c\/th\u003e\n          \u003cth\u003eHead Style\u003c\/th\u003e\n          \u003cth\u003eHead Diameter (approx.)\u003c\/th\u003e\n          \u003cth\u003eHead Height (approx.)\u003c\/th\u003e\n          \u003cth\u003eMaterial \/ Finish\u003c\/th\u003e\n          \u003cth\u003eTolerance\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hdiy-table-row\"\u003e\n          \u003ctd class=\"dia\"\u003eM3\u003c\/td\u003e\n          \u003ctd class=\"pitch\"\u003e0.5\u003c\/td\u003e\n          \u003ctd class=\"len\"\u003e45 mm\u003c\/td\u003e\n          \u003ctd class=\"head-type\"\u003eRound knurled\u003c\/td\u003e\n          \u003ctd class=\"head-dia\"\u003e~8‑10 mm\u003c\/td\u003e\n          \u003ctd class=\"head-h\"\u003e~5‑7 mm\u003c\/td\u003e\n          \u003ctd class=\"material\"\u003e6061 aluminium \/ Anodised\u003c\/td\u003e\n          \u003ctd class=\"tolerance\"\u003e±0.2 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003cp class=\"hdiy-note\" style=\"font-size:0.85rem; margin-top:0.5rem;\"\u003e* Length measured from underside of head to tip. Fully threaded. Colour may vary slightly due to photography and lighting – actual anodised colour may differ.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Application \u0026 Quality --\u003e\n  \u003ch2\u003e🛠️ Where to Use This Long‑Reach Thumb Screw\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrapper\" style=\"overflow-x: auto;\"\u003e\n    \u003ctable class=\"hdiy-specs-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eMachinery \u0026amp; equipment\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eAdjustment screws on deep frames, access panels, tool‑less clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003ePrecision moulds\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eQuick‑release fasteners, alignment pins, deep‑throat clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eBearing assembly \u0026amp; jigs\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eAdjustable stops, deep‑set screws, fixture handles\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eDIY \u0026amp; prototyping\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eCustom fixtures, 3D printer bed leveling (long reach), camera rigs\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ Section – all expanded --\u003e\n  \u003ch2\u003e❓ Frequently Asked Questions – M3 x 45mm Aluminium Thumb Screw\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e1. How do I measure the length of this thumb screw?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eThe length (45mm) is measured from the underside of the head (where the knurling meets the shaft) to the tip of the threaded stud. The head itself is NOT included. This 45mm stud is designed for applications that require a long reach through thick panels or into deep recesses.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e2. Is the screw fully threaded? Can I use it with a nut?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eYes – it is fully threaded from under the head to the tip. If you need to fasten through a plain hole, use an M3 metric nut (0.5mm pitch). For pre‑tapped M3 holes, no nut is needed.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e3. What colours are available? The photo shows a certain colour – will mine match exactly?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eWe offer a range of anodised colours (black, silver, red, blue, gold, green, etc.). Actual colour may vary slightly between batches or due to monitor calibration – this is normal. Please contact us for specific colour availability.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e4. Will the anodised finish wear off? Is it durable?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eAnodising is a hard, electrochemical finish that bonds to the aluminium. It resists scratches and fading far better than paint. Normal hand use will not remove the colour.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e5. Can I use this screw outdoors? Will it rust?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eAluminium naturally forms a protective oxide layer, and anodising adds extra corrosion resistance. It is suitable for indoor and light outdoor use. For continuous saltwater or harsh chemical environments, consider stainless steel thumb screws.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-item\"\u003e\n      \u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e6. Can I get other lengths or custom colours?\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"hdiy-faq-answer\"\u003eYes – we offer custom lengths and anodised colours. Please contact us with your requirements.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n  .hdiy-aluminum-thumb-screw-45 {\n    max-width: 100%;\n    margin: 0;\n    padding: 0;\n    color: #1a1a1a;\n    line-height: 1.5;\n  }\n  .hdiy-aluminum-thumb-screw-45 h2 {\n    font-size: 1.75rem;\n    margin: 1.5rem 0 0.75rem 0;\n    font-weight: 600;\n    border-bottom: 2px solid #eaeaea;\n    padding-bottom: 0.5rem;\n  }\n  .hdiy-aluminum-thumb-screw-45 h2:first-of-type {\n    margin-top: 0;\n  }\n  .hdiy-aluminum-thumb-screw-45 p {\n    margin-bottom: 1rem;\n    font-size: 1rem;\n  }\n  .hdiy-feature-list {\n    list-style: none;\n    padding-left: 0;\n    margin: 1rem 0;\n  }\n  .hdiy-feature-list li {\n    margin-bottom: 0.75rem;\n    padding-left: 0.25rem;\n    font-size: 1rem;\n    display: flex;\n    align-items: flex-start;\n    gap: 0.5rem;\n  }\n  .hdiy-feature-list li strong {\n    font-weight: 600;\n  }\n  .hdiy-table-wrapper 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