{"product_id":"m3-nylon-phillips-countersunk-white-screws","title":"M3 Nylon Phillips Countersunk Screws – White Plastic Machine Bolts","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eM3 White Nylon Countersunk Screws — Flush-Fit Plastic Fasteners for Electronics \u0026amp; Precision Assembly\u003c\/h2\u003e\n\u003cp\u003eWhen a metal screw would corrode, conduct electricity, or add unnecessary weight, builders and makers reach for nylon. Whether you're assembling a PCB enclosure, mounting circuit boards, building RC components, or securing lightweight panels, finding the right M3 nylon Phillips countersunk screw in the exact length you need shouldn't be a scavenger hunt.\u003c\/p\u003e\n\u003cp\u003eThese M3 white nylon Phillips flat head machine screws are made from engineering-grade nylon (PA66) and feature a countersunk head profile that sits flush with — or below — the surface of your material. Available in lengths from 6mm (≈1\/4\") to 20mm (≈25\/32\"), with pack quantities from 1 to 100 pieces, so you can grab exactly what your project calls for. Thread diameter is M3 (3mm) with a standard 0.5mm pitch.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include PCB and electronics enclosure assembly where electrical isolation is required, lightweight panel fastening in RC vehicles and hobby builds, and plastic-to-plastic or plastic-to-aluminum joining in 3D-printed parts and DIY enclosures — all scenarios where a flush, non-metallic fastener for plastic panels makes a real difference.\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 M3 ISO metric thread (0.5mm pitch) — fits standard M3 nuts, threaded inserts, and M3-tapped holes. Drive: Phillips PH1. Head angle: 90° countersunk (flat head).\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These M3 Nylon Phillips Countersunk 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\u003eElectrically Non-Conductive\u003c\/strong\u003e — Made from PA66 nylon, these screws provide full electrical isolation, making them a go-to choice for PCB mounting screws and electronics enclosure assembly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCorrosion-Resistant Material\u003c\/strong\u003e — Nylon does not rust or oxidize, so these fasteners hold up in damp environments and humid conditions where metal screws would degrade over time.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlush Countersunk Head\u003c\/strong\u003e — The 90° flat head countersunk profile allows the screw to sit flush with or below the surface, delivering a clean finish on plastic panels, enclosures, and 3D-printed parts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLightweight Construction\u003c\/strong\u003e — Nylon weighs significantly less than steel, making these screws ideal for weight-sensitive builds like RC vehicles, drones, and portable electronics.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePhillips PH1 Drive\u003c\/strong\u003e — Standard cross-head drive works with common screwdrivers and power bits, reducing the need for specialty tools during assembly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Choose from 1 to 100 pieces per order, so you can match your exact project needs without overstocking — from a single prototype to a full production run of nylon machine bolts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — M3 Nylon Countersunk Machine Screws\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eISO Metric M3 × 0.5mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Diameter\u003c\/th\u003e\n\u003ctd\u003eM3 (3mm \/ ≈0.118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths (incl. head)\u003c\/th\u003e\n\u003ctd\u003e6mm (≈1\/4\"), 8mm (≈5\/16\"), 10mm (≈3\/8\"), 12mm (≈15\/32\"), 15mm (≈19\/32\"), 18mm (≈45\/64\"), 20mm (≈25\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Type\u003c\/th\u003e\n\u003ctd\u003eCountersunk (Flat Head), 90° angle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003ctd\u003ePhillips (Cross) — PH1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePA66 Nylon (engineering-grade polyamide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Insulation\u003c\/th\u003e\n\u003ctd\u003eYes — non-conductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eYes — does not rust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity Options\u003c\/th\u003e\n\u003ctd\u003e1, 5, 10, 20, 50, 100 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Nut \/ Insert\u003c\/th\u003e\n\u003ctd\u003eStandard M3 metric nut or M3 threaded insert\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Driver Bit\u003c\/th\u003e\n\u003ctd\u003ePH1 Phillips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm for extreme environments\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 Length measurement includes the head. Always verify your countersink hole angle (90°) before installation for a proper flush fit.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right screw length for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA general rule is to choose a length that allows the screw to penetrate the base material by at least 2–3 times the thread diameter. For M3 screws, that typically means at least 6–9mm of thread engagement in the base material. For example, if you're fastening a 4mm panel, a 10mm (≈3\/8\") screw generally provides solid grip. Note that length is measured including the head on countersunk screws — factor in your material thickness accordingly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are nylon screws compared to metal screws?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNylon screws are generally lighter and more flexible than metal fasteners, making them well-suited for low-torque, non-structural applications. They typically handle tensile loads appropriate for light electronics assembly, PCB mounting, and enclosure work. For heavy structural loads or high-vibration environments, metal fasteners are generally recommended. Do not overtighten — nylon threads can strip more easily than metal under excessive torque.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these screws suitable for outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNylon is inherently corrosion-resistant and does not rust, making these screws generally suitable for damp or mildly wet environments. However, prolonged UV exposure can cause nylon to become brittle over time. For long-term outdoor use, consider protecting the fasteners from direct sunlight, or contact us to confirm suitability for your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these M3 screws follow, and are they compatible with standard M3 nuts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese screws follow the ISO metric thread standard at M3 × 0.5mm pitch, which is the most common M3 thread pitch used worldwide. They are compatible with standard M3 metric nuts, M3 threaded brass inserts, and any M3-tapped hole machined to ISO standard. They are not compatible with UNC\/UNF inch-standard threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat driver bit do I need, and how do I avoid stripping the head?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese screws use a Phillips (cross) drive. A PH1 (Phillips #1) screwdriver or bit is typically the correct size for M3 Phillips screws. Using the correct bit size and applying steady downward pressure while turning helps prevent cam-out and protects the nylon head from stripping. Avoid power drivers set to high torque — hand-tightening or a low-torque setting is generally recommended for nylon fasteners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the countersunk head sit flush with my material?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — the countersunk (flat) head is designed to sit flush with or below the surface when installed in a properly countersunk hole. The head angle is 90°, which is the standard for metric countersunk screws. Pre-drilling a countersink with a 90° countersink bit is recommended for a clean flush finish. Without a countersink, the head will protrude above the surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre nylon screws electrically insulating — can I use them in electronics builds?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Nylon (PA66) is a non-conductive material, making these M3 nylon Phillips countersunk screws a common choice for electronics assembly, PCB mounting, and any application where electrical isolation between components is needed. They will not create short circuits or interfere with grounding paths the way metal screws can.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003escrew length and pack quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"6mm \/ 1Pcs","offer_id":52285266919698,"sku":"GYWWWHK-KCSJ0312x1","price":3.35,"currency_code":"USD","in_stock":true},{"title":"8mm \/ 1Pcs","offer_id":52285266952466,"sku":"GYWWWHK-KCSJ0313x1","price":3.35,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 1Pcs","offer_id":52285266985234,"sku":"GYWWWHK-KCSJ0314x1","price":3.35,"currency_code":"USD","in_stock":true},{"title":"12mm \/ 1Pcs","offer_id":52285267018002,"sku":"GYWWWHK-KCSJ0315x1","price":3.35,"currency_code":"USD","in_stock":true},{"title":"15mm \/ 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