M2 Zinc Plated Nylon Insert Hex Lock Nuts Black 250 Pack

M2 Zinc Plated Nylon Insert Hex Lock Nuts – 250-Pack

Keep your assemblies tight and secure with these M2 Zinc Plated Nylon Insert Hex Lock Nuts. 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 250 pieces ensures you always have the right nut on hand.

Key Specifications

• Thread Size: M2 (Female)
• Material: Zinc-plated steel with nylon locking insert
• Color: Black
• Height: 3 mm / 0.12 in
• Width Across Flats: 4 mm / 0.16 in
• Width Across Corners: 4.3 mm / 0.17 in
• Quantity: 250 pieces per pack

Why Choose These Lock Nuts?

• Anti-Loosening Design: The nylon insert grips the bolt thread, preventing unwanted loosening from vibration or movement.
• Zinc-Plated Finish: Provides corrosion resistance for extended service life in a variety of environments.
• Hex Profile: Standard hex shape for easy installation with common wrenches and socket tools.
• Versatile Use: Compatible with M2 machine screws, cap screws, and bolts — suitable for electronics, RC models, machinery, furniture, and general hardware applications.
• Bulk Value Pack: 250 nuts in one package means fewer reorders and more time working on your projects.

What's in the Box

• 250 × M2 Zinc Plated Nylon Insert Hex Lock Nuts (Black)

Note: Due to lighting and screen variations, the actual color may differ slightly from product images. Measurement tolerance: ±1–3 mm.

Made in Mainland China.

For guidance on fastener standards and safe hardware practices, refer to the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Locknut

Frequently Asked Questions

Q: What is the thread size of these nylon insert hex lock nuts?

A: 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.

Q: How do zinc-plated nylon insert lock nuts resist loosening?

A: 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.

Q: Are these lock nuts reusable?

A: 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.

Q: What tools do I need to install M2 hex lock nuts?

A: 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.