{"product_id":"m3-countersunk-nickel-phillips-screws-5-30mm","title":"M3 Countersunk Phillips Machine Screws – Nickel Plated Carbon Steel, Fully Threaded (5–30mm)","description":"\u003cstyle\u003e\n  \/* 统一前缀 hdiy-，避免样式冲突 *\/\n  .hdiy-product-wrap {\n    margin: 0;\n    padding: 0;\n  }\n  .hdiy-product-wrap h2,\n  .hdiy-product-wrap h3 {\n    margin-top: 1.5em;\n    margin-bottom: 0.5em;\n    font-weight: 600;\n  }\n  .hdiy-product-wrap p {\n    margin-bottom: 1em;\n    line-height: 1.5;\n  }\n  .hdiy-features-list {\n    list-style: none;\n    padding-left: 0;\n  }\n  .hdiy-features-list li {\n    margin-bottom: 0.75em;\n    padding-left: 1.5em;\n    position: relative;\n    line-height: 1.4;\n  }\n  .hdiy-features-list li::before {\n    content: \" \";\n    position: absolute;\n    left: 0;\n    top: 0;\n  }\n  .hdiy-table-wrapper {\n    overflow-x: auto;\n    margin: 1.2em 0;\n  }\n  .hdiy-specs-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.95rem;\n    background: #fff;\n    min-width: 300px;\n  }\n  .hdiy-specs-table th,\n  .hdiy-specs-table td {\n    border: 1px solid #ddd;\n    padding: 10px 12px;\n    text-align: left;\n    vertical-align: top;\n  }\n  .hdiy-specs-table th {\n    background-color: #f5f5f5;\n    font-weight: 600;\n    width: 35%;\n  }\n  .hdiy-faq-item {\n    margin-bottom: 1.25rem;\n    border-bottom: 1px solid #eee;\n    padding-bottom: 0.75rem;\n  }\n  .hdiy-faq-question {\n    font-weight: 700;\n    margin-bottom: 0.35rem;\n    font-size: 1rem;\n  }\n  .hdiy-faq-answer {\n    margin-top: 0;\n    line-height: 1.45;\n    color: #2c2c2c;\n  }\n  @media (max-width: 640px) {\n    .hdiy-specs-table th,\n    .hdiy-specs-table td {\n      padding: 8px 10px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hdiy-product-wrap\"\u003e\n  \n  \u003c!-- Product Overview --\u003e\n  \u003ch2\u003e🔩 Product Overview: M3 Countersunk Phillips Machine Screws – Nickel Plated Carbon Steel (3–30mm)\u003c\/h2\u003e\n  \u003cp\u003eNeed a strong, corrosion‑resistant fastener that sits completely flush with the surface? These M3 countersunk flat head Phillips machine screws are made from carbon steel with a bright nickel plating – giving you a clean, silver finish and good rust protection. The 90° flat head sinks perfectly into countersunk holes, leaving a smooth, snag‑free surface ideal for furniture, electronics, appliances, and light machinery. Fully threaded with standard M3 coarse pitch (0.5mm), and available in lengths from 5mm to 30mm (measured under the head). The Phillips drive works with standard PH1 bits for easy installation. 100% brand new, high quality, and affordable – perfect for professional and DIY projects.\u003c\/p\u003e\n  \n  \u003c!-- Key Features List --\u003e\n  \u003ch2\u003e✨ Why These M3 Nickel Plated Countersunk Screws Are a Workshop Essential\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNickel plated carbon steel\u003c\/strong\u003e – Bright, corrosion‑resistant finish. Provides good protection for indoor and light outdoor use. Clean, professional appearance.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCountersunk flat head (90°)\u003c\/strong\u003e – Sits flush in tapered holes for a smooth, snag‑free surface. Ideal for panel mounting and visible assemblies.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM3 metric diameter – fully threaded\u003c\/strong\u003e – Standard coarse pitch (0.5mm). Threads run the entire shank length for maximum grip in thin materials.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultiple length options: 5mm to 30mm (under head)\u003c\/strong\u003e – Available in 5, 6, 8, 10, 12, 16, 20, 25, 30mm. Perfect for thin panels or thicker assemblies.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePhillips drive\u003c\/strong\u003e – Works with standard PH1 bits. Quick and secure installation with common tools.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e100% brand new, high quality, inexpensive\u003c\/strong\u003e – Reliable performance at an affordable price point.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWide application range\u003c\/strong\u003e – Furniture, electronics, appliances, machinery, automotive trim, and general DIY.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003c!-- Specifications Table --\u003e\n  \u003ch2\u003e📏 Technical Specifications – M3 Nickel Plated Countersunk Screws\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrapper\"\u003e\n    \u003ctable class=\"hdiy-specs-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003ePhillips Countersunk Flat Head Machine Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Size (Diameter)\u003c\/th\u003e\n\u003ctd\u003eM3 (3mm)\u003c\/td\u003e\n        \u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Pitch\u003c\/th\u003e\n\u003ctd\u003e0.5mm (standard metric coarse)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eFully threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eCountersunk flat head (90°)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eDrive Style\u003c\/th\u003e\n\u003ctd\u003ePhillips cross‑head (use PH1 bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Treatment\u003c\/th\u003e\n\u003ctd\u003eNickel plated (bright silver)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength Range (under head)\u003c\/th\u003e\n\u003ctd\u003e5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm (select from options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength Measurement\u003c\/th\u003e\n\u003ctd\u003eUnder head – from flat bearing surface to tip (head not included)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \n  \u003c!-- Frequently Asked Questions --\u003e\n  \u003ch2\u003e❓ FAQs – M3 Countersunk Nickel Plated Screws\u003c\/h2\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 How is length measured for these countersunk screws?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eFor countersunk screws, length is measured from the underside of the head (the flat bearing surface) to the tip, not including the head. For example, an M3 x 10mm screw has a 10mm threaded shank. This matches the measurement method stated in the product description.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 Are these screws fully threaded? What is the thread pitch?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eYes – they are fully threaded from just under the head to the tip. The thread pitch is standard M3 coarse: 0.5mm. This ensures compatibility with standard M3 nuts and tapped holes.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 Will the nickel plating rust or wear off?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eNickel plating provides good corrosion resistance for indoor and light outdoor use. It holds up well for furniture, appliances, and electronics. With repeated driving, the recess may show some wear, but the overall finish is durable for most general use. For constant moisture or saltwater, we recommend stainless steel.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 What Phillips screwdriver size should I use for M3 screws?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eUse a PH1 Phillips screwdriver bit. This provides the best engagement and prevents stripping. A quality PH1 bit is standard for M3 screws.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 Can I use these screws with nuts, or are they self‑tapping?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eThese are standard machine screws – they require a matching M3 metric nut or a pre‑tapped hole. They are not self‑tapping. For best results, pair them with steel or stainless M3 nuts.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"hdiy-faq-item\"\u003e\n    \u003cdiv class=\"hdiy-faq-question\"\u003e🔸 What lengths are available for M3?\u003c\/div\u003e\n    \u003cdiv class=\"hdiy-faq-answer\"\u003eWe offer M3 lengths from 5mm to 30mm: 5, 6, 8, 10, 12, 16, 20, 25, and 30mm. Please select your desired length from the dropdown options. If you need a length not listed, contact us.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3x5mm \/ 100pcs","offer_id":52284903850258,"sku":"ZXCSZYXDZ52611x1","price":3.29,"currency_code":"USD","in_stock":true},{"title":"3x6mm \/ 100pcs","offer_id":52284903883026,"sku":"ZXCSZYXDZ63962x1","price":5.07,"currency_code":"USD","in_stock":true},{"title":"3x8mm \/ 100pcs","offer_id":52284903915794,"sku":"ZXCSZYXDZ63963x1","price":5.74,"currency_code":"USD","in_stock":true},{"title":"3x10mm \/ 100pcs","offer_id":52284903948562,"sku":"ZXCSZYXDZ52605x1","price":6.57,"currency_code":"USD","in_stock":true},{"title":"3x12mm \/ 100pcs","offer_id":52284903981330,"sku":"ZXCSZYXDZ52606x1","price":7.14,"currency_code":"USD","in_stock":true},{"title":"3x16mm \/ 100pcs","offer_id":52284904014098,"sku":"ZXCSZYXDZ52610x1","price":8.39,"currency_code":"USD","in_stock":true},{"title":"3x20mm \/ 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