{"product_id":"m2-x-4mm-aluminium-knurled-thumb-screws-flat-head","title":"M2 x 4mm Aluminium Knurled Thumb Screws — Flat Head, Hand-Tighten, 10 Colors","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eM2 x 4mm Aluminium Knurled Thumb Screws — Tool-Free Fastening for PC Builds \u0026amp; Electronics\u003c\/h2\u003e\n\u003cp\u003eIf you've ever stripped a tiny screw trying to close a PC panel or fumbled for a screwdriver just to swap a side cover, you know the frustration. These M2 x 4mm aluminium knurled thumb screws are designed for makers, PC builders, and electronics hobbyists who need a reliable, tool-free fastening solution for lightweight panels and enclosures.\u003c\/p\u003e\n\u003cp\u003eEach screw measures M2 x 4mm (≈5\/32\") and features a flat, low-profile head with a fully knurled grip surface. Made from anodized aluminium, they are available in 10 colors — Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange — and sold in packs of 2, 5, 8, 10, or 15 pieces to match your project needs.\u003c\/p\u003e\n\u003cp\u003eThese knurled thumb screws are a go-to choice for computer case panel retention, 3D printer enclosure assembly, and custom electronics chassis builds where frequent access and clean aesthetics matter. Long-tail use cases include DIY server rack panels, Raspberry Pi enclosures, and maker project housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e M2 metric thread (pitch 0.4mm). Designed for M2 threaded inserts, standoffs, and nuts. \u003cstrong\u003eNot compatible\u003c\/strong\u003e with UNC\/UNF inch-standard threads. Confirm your mating thread is M2 metric before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These M2 Aluminium Knurled Thumb Screws\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✋\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTool-Free Installation\u003c\/strong\u003e — Fully knurled grip surface allows firm finger-tightening without a screwdriver, ideal for panels you open and close regularly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e10 Anodized Color Options\u003c\/strong\u003e — Choose from Black, Silver, Golden, Royal Blue, Sky Blue, Wine Red, Rose Red, Green, Purple, or Orange to match your build's color scheme.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLightweight Aluminium Construction\u003c\/strong\u003e — Aluminium alloy body keeps weight minimal — a practical advantage in weight-sensitive electronics and portable enclosures.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlat Low-Profile Head\u003c\/strong\u003e — The flat head design sits flush or near-flush against panels, reducing snag points and maintaining a clean finished look on PC cases and custom chassis.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eAnodized Finish for Durability\u003c\/strong\u003e — The anodized surface layer resists everyday wear, minor corrosion, and surface scratching better than bare aluminium, helping maintain appearance over repeated use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Sizes\u003c\/strong\u003e — Available in 2, 5, 8, 10, and 15-piece packs so you can order just enough for a single build or stock up for multiple projects without overpaying.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — M2 x 4mm Flat Knurled Thumb Screws\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003ctd\u003eM2 (metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Pitch\u003c\/th\u003e\n\u003ctd\u003e0.4mm (standard M2 coarse)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eScrew Length\u003c\/th\u003e\n\u003ctd\u003e4mm (≈5\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eFlat \/ Low-Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Style\u003c\/th\u003e\n\u003ctd\u003eKnurled thumb (tool-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eAnodized (color options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Colors\u003c\/th\u003e\n\u003ctd\u003eWine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Orange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Sizes\u003c\/th\u003e\n\u003ctd\u003e2 \/ 5 \/ 8 \/ 10 \/ 15 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Piece\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Standards\u003c\/th\u003e\n\u003ctd\u003eM2 metric threaded inserts, standoffs, nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003ctd\u003ePC cases, electronics enclosures, 3D printer frames, DIY chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e These screws are designed for light-duty panel retention. They are not intended for structural, load-bearing, or high-torque applications. If you are unsure whether M2 x 4mm is the correct size for your project, please contact us before ordering.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat length is M2 x 4mm, and how do I know if it fits my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e4mm is approximately 5\/32\" in imperial. This length is generally suited for thin panels, lightweight brackets, and electronics enclosures where thread engagement of 3–5mm is sufficient. If your mating material is thicker, consider a longer variant. When in doubt, measure the depth of your threaded hole or insert before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are aluminium thumb screws compared to steel?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminium thumb screws are typically lighter and corrosion-resistant but have lower tensile strength than steel. They are generally suitable for light-duty fastening — panel retention, covers, and non-structural assemblies — rather than high-load structural joints. For applications requiring higher clamping force, stainless steel thumb screws are typically recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these thumb screws be used outdoors or in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAnodized aluminium generally offers good corrosion resistance for light outdoor or humid environments. However, prolonged exposure to salt spray or standing water may degrade the finish over time. For harsh outdoor use, stainless steel fasteners are typically recommended. These screws are best suited for indoor electronics and maker applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these screws use — metric or UNC?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are M2 metric thread screws with a standard pitch of 0.4mm. They are \u003cstrong\u003enot compatible\u003c\/strong\u003e with UNC or UNF inch-standard threads. Please confirm your mating nut, standoff, or threaded insert is M2 metric before ordering. If you are unsure, check your motherboard standoff or enclosure documentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a screwdriver or any tool to install these?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo tools required. The knurled outer surface is specifically designed for finger-tightening, providing enough grip to seat the screw securely without a driver. This makes them ideal for PC side panels, access covers, and any enclosure you open and close frequently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich color should I choose for my PC build or electronics project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eWe offer 10 anodized colors: Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange. Black and Silver are the most popular for PC cases and server panels. Colored options are popular for custom builds, maker projects, and anywhere aesthetics are part of the design. Select your color from the variant options above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many screws do I need for a typical PC case panel or electronics enclosure?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMost standard PC side panels use 2–4 thumb screws per panel. Smaller electronics enclosures typically use 2–6 screws depending on the design. We offer packs of 2, 5, 8, 10, and 15 pieces so you can order exactly what you need — or stock extras for future builds and repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size, color, and quantity above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M2x4mm \/ Wine Red \/ 2 Pcs","offer_id":52293078155538,"sku":"GLFBZBP2024DATANGGK00587x2","price":7.75,"currency_code":"USD","in_stock":true},{"title":"M2x4mm \/ Rose Red \/ 2 Pcs","offer_id":52293078188306,"sku":"GLFBZBP2024DATANGGK00588x2","price":7.75,"currency_code":"USD","in_stock":true},{"title":"M2x4mm \/ Golden \/ 2 Pcs","offer_id":52293078221074,"sku":"GLFBZBP2024DATANGGK00589x2","price":7.75,"currency_code":"USD","in_stock":true},{"title":"M2x4mm \/ Royal blue \/ 2 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