{"product_id":"m2-zinc-plated-nylon-insert-hex-lock-nuts-black-250-pack","title":"M2 Zinc Plated Nylon Insert Hex Lock Nuts Black 250 Pack","description":"\n\u003ch2\u003eM2 Zinc Plated Nylon Insert Hex Lock Nuts – 250-Pack\u003c\/h2\u003e\n\u003cp\u003eKeep your assemblies tight and secure with these \u003cstrong\u003eM2 Zinc Plated Nylon Insert Hex Lock Nuts\u003c\/strong\u003e. Engineered for reliable fastening, the built-in nylon insert creates friction against the bolt threads to resist loosening caused by vibration and torque — ideal for mechanical projects, DIY repairs, electronics builds, and more. This bulk pack of \u003cstrong\u003e250 pieces\u003c\/strong\u003e ensures you always have the right nut on hand.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M2 (Female)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Zinc-plated steel with nylon locking insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3 mm \/ 0.12 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats:\u003c\/strong\u003e 4 mm \/ 0.16 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Corners:\u003c\/strong\u003e 4.3 mm \/ 0.17 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 250 pieces per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose These Lock Nuts?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e The nylon insert grips the bolt thread, preventing unwanted loosening from vibration or movement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZinc-Plated Finish:\u003c\/strong\u003e Provides corrosion resistance for extended service life in a variety of environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Profile:\u003c\/strong\u003e Standard hex shape for easy installation with common wrenches and socket tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e Compatible with M2 machine screws, cap screws, and bolts — suitable for electronics, RC models, machinery, furniture, and general hardware applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBulk Value Pack:\u003c\/strong\u003e 250 nuts in one package means fewer reorders and more time working on your projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e250 × M2 Zinc Plated Nylon Insert Hex Lock Nuts (Black)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to lighting and screen variations, the actual color may differ slightly from product images. Measurement tolerance: ±1–3 mm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor guidance on fastener standards and safe hardware practices, refer to the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Locknut\" target=\"_blank\" rel=\"noopener\"\u003eLocknut\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the thread size of these nylon insert hex lock nuts?\u003c\/h4\u003e\n\u003cp\u003eA: These lock nuts feature an M2 female thread size, making them compatible with M2 machine screws, cap screws, and bolts commonly used in electronics, RC vehicles, and precision hardware projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do zinc-plated nylon insert lock nuts resist loosening?\u003c\/h4\u003e\n\u003cp\u003eA: The nylon insert inside each nut creates friction against the mating bolt threads when tightened, which resists loosening caused by vibration, torque, or dynamic loads — without damaging the bolt.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these lock nuts reusable?\u003c\/h4\u003e\n\u003cp\u003eA: Nylon insert lock nuts can typically be reused a limited number of times. For critical or high-vibration applications, it is best practice to replace them after each use to ensure maximum holding performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What tools do I need to install M2 hex lock nuts?\u003c\/h4\u003e\n\u003cp\u003eA: A small open-end wrench, combination wrench, or nut driver sized for a 4 mm hex (width across flats) is all you need. A screwdriver or hex key can be used to hold the mating screw stationary while tightening.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the thread size of these nylon insert hex lock nuts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These lock nuts feature an M2 female thread size, making them compatible with M2 machine screws, cap screws, and bolts commonly used in electronics, RC vehicles, and precision hardware projects.\"}}, {\"@type\": \"Question\", \"name\": \"How do zinc-plated nylon insert lock nuts resist loosening?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The nylon insert inside each nut creates friction against the mating bolt threads when tightened, which resists loosening caused by vibration, torque, or dynamic loads — without damaging the bolt.\"}}, {\"@type\": \"Question\", \"name\": \"Are these lock nuts reusable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Nylon insert lock nuts can typically be reused a limited number of times. 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