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365-Piece Black Nylon Spacer Kit 3mm & 4mm ID 7mm OD - size: M3/M4

365-Piece Black Nylon Spacer Kit 3mm & 4mm ID 7mm OD - size: M3/M4

$11.60 USD
$11.60 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.

About this item

  • 365-PIECE 15-SIZE ASSORTMENT: Includes 190 spacers with a 3 mm inner diameter and 175 spacers with a 4 mm inner diameter. Every spacer has a 7 mm outer diameter, with lengths ranging from 2 mm to 15 mm for different spacing requirements
  • 3 MM INNER DIAMETER OPTIONS: Includes 60 pieces at 2 mm long, 40 pieces at 3 mm long, and 15 pieces each at 5, 8, 10, 12, 13, and 15 mm long. The expanded size selection makes it easier to match different PCB, enclosure, and hardware layouts
  • 4 MM INNER DIAMETER OPTIONS: Includes 60 pieces at 2 mm long, 40 pieces at 3 mm long, and 15 pieces each at 5, 8, 10, 12, and 15 mm long. Select the required length to create consistent spacing between mounted components
  • NON-THREADED NYLON CONSTRUCTION: These black round spacers slide over compatible screws instead of threading onto them. The nylon construction is lightweight, rust-free, and suitable for separating components without using a metal spacer between surfaces
  • FOR ELECTRONICS AND DIY ASSEMBLY: Useful for PCB mounting, circuit boards, control boxes, small machinery, 3D-printed projects, models, repairs, and custom hardware assemblies. Dimensions are listed as inner diameter x outer diameter x length. Confirm the actual screw diameter and required clearance before purchase; fit is not guaranteed for every M3, M4, or 6-32 screw

Overview

  • Material: Plastic
  • Outside Diameter: 7 millimeters
  • Washer Type: Flat
  • Exterior Finish: Black
  • Fastener Size: M3/M4

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Hannah Miller — Seattle, Washington
    I ordered several science activity supplies for projects at home. The product descriptions made it easier to compare the available options, and everything fit neatly into our learning space. Stemora made finding tools for hands-on activities feel simple and organized.

  • ⭐⭐⭐⭐⭐

    Daniel Foster — Austin, Texas
    I found a useful selection of electronics and robotics accessories for a beginner project. It was convenient to browse related components in clearly organized categories. I would consider shopping here again when planning another maker activity.

  • ⭐⭐⭐⭐⭐

    Lauren Bennett — Denver, Colorado
    The measurement and observation tools I selected worked well for the classroom activities I had planned. I especially appreciated being able to review the product details before ordering and choose items that matched the lesson requirements.

  • ⭐⭐⭐⭐⭐

    Jason Parker — Portland, Oregon
    I purchased a few storage items and small tools for organizing my maker workspace. The products helped keep components, wires, and project materials easier to sort and access. The overall shopping experience was straightforward and convenient.

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FAQ

What types of products does Stemora offer?


Stemora offers supplies for science experiments, microscopy, biology learning, measurement, laboratory organization, electronics, robotics, coding education, 3D printing, maker projects, and classroom activities. Available products and specifications may change over time.

Are Stemora products suitable for children?


Recommended ages vary by product. Please review the product description, manufacturer guidance, included warnings, and required skill level before purchasing. Products containing small parts, tools, electrical components, glass, or chemicals may not be suitable for young children.

Is adult supervision required?


Adult supervision is recommended for children and students, especially when using electrical components, sharp tools, heated equipment, glassware, small parts, or experiment materials. Customers are responsible for following all product instructions and safety precautions.

Can these products be used at home and in classrooms?


Many products may be suitable for classrooms, home learning, science projects, maker spaces, and hobby activities. Suitability depends on the specific product, learning environment, user experience, and intended activity.

How can I check what is included with a product?


Please review the product title, description, specifications, images, package quantity, and included-components section before ordering. Items shown for demonstration or scale in product images may not always be included.

How do I know whether an electronic or robotics part is compatible?


Check the listed dimensions, voltage, connector type, board compatibility, operating requirements, and supported platforms. Compatibility is not guaranteed unless it is specifically stated on the product page. Contact us before ordering if you need clarification.

When will I receive tracking information?


Tracking information is generally provided within 3–5 business days after an order is confirmed. In some cases, processing may take approximately 7–8 business days. Delivery may require an additional 4–5 business days after tracking becomes available, depending on the carrier and destination.

Why did my order arrive in separate packages?


Products in the same order may be shipped from different fulfillment locations. As a result, items may arrive separately and have different tracking numbers. You will not be charged additional shipping fees solely because an order is divided into multiple packages.

Can I change or cancel my order?


Contact us as soon as possible at vaioamaonaoak@gmail.com. We will try to assist, but changes or cancellations cannot be guaranteed once an order has entered processing or has been shipped.

What should I do if an item arrives damaged, defective, or incorrect?


Contact us promptly at vaioamaonaoak@gmail.com with your order number, a description of the issue, and clear photographs of the item, packaging, and shipping label. Please retain the product and original packaging while we review your request. Eligibility and available resolutions are subject to our Return & Refund Policy.

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