306PCS M3-M6 Black Nylon Spacers Kit, 3-25mm for M3-M6 Screws Bolt

Master Your Precision Projects with LUKAISEN Professional Nylon SpacersIn the world of electronics and mechanical assembly, a single millimeter can be the difference between a perfect fit and a failed project. Stop relying on stacks of washers or "hacked" solutions. The LUKAISEN 306PCS Black Nylon Spacer Assortment is the professional standard for creating consistent, reliable, and non-conductive gaps.Why Professionals Choose LUKAISEN Nylon Over MetalMetal spacers are heavy, prone to corrosion, and can cause electrical shorts in sensitive circuitry. Our spacers are molded from high-density nylon, offering a unique combination of lightweight performance and incredible compressive strength. They act as a thermal and electrical insulator, making them the first choice for computer technicians, 3D printing enthusiasts, and automotive modders.Designed for VersatilityFrom securing a drone flight controller to spacing out custom furniture panels, the non-threaded design ensures a smooth, easy fit over M3, M4, M5, and M6 screws. The deep black finish provides a clean, factory look that blends seamlessly with most modern hardware and electronic housings.Comprehensive Package Contents (17 Pieces per Size): M3 (7mm OD): 3mm, 6mm, 10mm, 18mm, 25mm M4 (8mm OD): 3mm, 5mm, 8mm, 15mm M5 (9mm OD): 3mm, 6mm, 10mm, 18mm, 25mm M6 (11mm OD): 5mm, 8mm, 15mm, 20mmTech Tip for Rufus Users: These spacers are "unthreaded," meaning the screw passes through the center smoothly. Always match your screw size to the internal diameter of the spacer (e.g., use an M5 screw with our M5 series) for maximum lateral stability.

• 18 VERSATILE SIZES FOR ANY PROJECT: With 306 pieces and 18 distinct sizes (M3 to M6), this kit eliminates the frustration of being "one spacer short." Whether you're filling a 3mm gap or a 25mm height requirement, you’ll find the precise fit for your bolt and standoff needs without trips to the hardware store.
• PREMIUM INSULATING NYLON MATERIAL: Crafted from high-density black nylon, these spacers offer superior electrical insulation and corrosion resistance compared to metal. They are lightweight yet rigid enough to resist deformation under pressure, making them ideal for sensitive electronic assemblies.
• PRECISION NON-THREADED DESIGN: These circular spacers feature smooth, non-threaded bores designed for easy bolt pass-through. Unlike brittle plastic competitors, our spacers provide a stable, vibration-dampening buffer that protects your PCB boards and delicate surfaces from scratches.
• OPTIMIZED FOR 3D PRINTING & DIY: Solve the "uneven surface" pain point in 3D printer builds and robotics. These spacers are specifically sized for M3-M6 hardware, ensuring perfect alignment for motherboards, cooling fans, and mechanical linkages in your custom DIY projects.
• DURABLE & ORGANIZED STORAGE: Stop wasting time digging through messy bins. Our set comes in a heavy-duty, labeled organizer box with secure latches to prevent sizes from mixing. Each compartment is clearly marked with dimensions for rapid identification during intensive assembly work.