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631PCS M3 Hex Socket Head Cap Screws, 12.9 Alloy Steel Bolts Kit | High-Tensile, M3 x 6/8/10/12/16/20mm, With Flat Washers & Allen Wrench, Black Zinc Plated For 3D Printing,RC,DIY - size: M3 631pcs 3

631PCS M3 Hex Socket Head Cap Screws, 12.9 Alloy Steel Bolts Kit | High-Tensile, M3 x 6/8/10/12/16/20mm, With Flat Washers & Allen Wrench, Black Zinc Plated For 3D Printing,RC,DIY - size: M3 631pcs 3

$16.58 USD
$16.58 USD
Sale Sold out
Taxes included.

About this item

  • 1. GRADE 12.9 ULTRA HIGH TENSILE STRENGTH: Crafted from premium alloy steel, our M3 screws meet the 12.9 grade industrial standard, providing superior tensile strength and hardness compared to stainless steel or 8.8 grade bolts. They are engineered for high-stress applications where durability and reliability are non-negotiable.
  • 2. ADVANCED BLACK ZINC PLATED FINISH: Unlike common black oxide fasteners that may rub off or rust quickly, these screws feature a specialized Black Zinc Coating. This finish offers excellent corrosion resistance and a sleek, uniform black look, making them perfect for visible assemblies like PC builds and drone frames.
  • 3. ESSENTIAL 631-PIECE METRIC SET: This comprehensive assortment includes 210 screws in 6 frequently used lengths (6mm, 8mm, 10mm, 12mm, 16mm, 20mm), plus 210 matching hex nuts and 210 flat washers. To ensure immediate use, we’ve also included a precision Allen wrench in every box.
  • 4. PRECISION HEX SOCKET DRIVE: Designed with deep, standardized internal hex sockets, these cap screws provide a high-torque connection that resists stripping. The clean, burr-free threads ensure smooth engagement and a professional fastening experience for delicate electronics and heavy-duty machinery alike.
  • 5. LABELED STORAGE FOR QUICK ACCESS: All 631 pieces are organized in a heavy-duty, transparent storage case with secure snap-locks. A detailed size chart is printed on the lid, allowing you to identify the exact length you need in seconds, keeping your workspace organized and efficient.

Overview

  • Material: 12.9 Alloy Steel Black
  • Head Style: Socket
  • Item dimensions L x W x H: 7.48 x 3.94 x 0.67 inches
  • Exterior Finish: Black Zinc Plating
  • Thread Size: M3

15 in stock

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Reviews

  • ⭐⭐⭐⭐⭐

    Ethan Miller — Phoenix, Arizona

    I found the replacement parts I needed for my RC truck without having to search through unrelated products. The categories were easy to understand, and the new wheels and suspension parts worked well for my weekend build.

  • ⭐⭐⭐⭐⭐

    Marcus Lee — San Diego, California

    TinyRacer has a practical selection of RC tools, batteries, and upgrade parts. I picked up several items for maintaining my crawler, and everything made my workbench setup feel much more organized.

  • ⭐⭐⭐⭐⭐

    Olivia Parker — Denver, Colorado

    I am still fairly new to RC cars, so I appreciated how clearly the products were grouped. It was easy to compare chargers, connectors, and maintenance supplies for my first off-road vehicle.

  • ⭐⭐⭐⭐⭐

    Noah Bennett — Austin, Texas

    I enjoy upgrading and adjusting my RC vehicles, and TinyRacer makes it convenient to browse parts for different projects. I especially liked the variety of tires, hardware, and drivetrain components available.

FAQ

What types of products does TinyRacer sell?

TinyRacer offers RC cars, trucks, crawlers, buggies, drift vehicles, replacement parts, electronics, batteries, chargers, tools, maintenance supplies, and performance upgrades for a wide range of RC projects.

How can I check whether a part fits my RC vehicle?

Review the product description for scale, dimensions, mounting points, connector type, voltage, part number, and compatible models. Similar-looking RC parts may not be interchangeable, so please confirm all specifications before ordering.

How much does shipping cost?

Standard shipping costs a flat $6.90 per order unless a different amount is displayed during checkout. Any applicable taxes or additional charges will be shown before payment is completed.

How long does order processing take?

Processing time may vary depending on product availability and order volume. Once your order has been prepared and shipped, you will receive a confirmation email with the available tracking information.

How long will delivery take?

Delivery times depend on the destination, carrier, product availability, and other shipping conditions. The estimated delivery information provided during checkout or through tracking is not a guaranteed arrival date.

How can I track my order?

A tracking link will be emailed to you after your order ships. Tracking updates may take a short time to appear after the carrier receives the package.

Can I change or cancel my order?

Contact us as soon as possible after placing your order. We will try to help, but changes and cancellations cannot be guaranteed once processing or shipment has begun.

What is your return policy?

Eligible items may be returned according to the conditions and timeframes stated in our Return & Refund Policy. Items should generally be unused, uninstalled, and returned with their original packaging and included components.

What should I do if my order arrives damaged or incorrect?

Contact us promptly with your order number, a description of the issue, and clear photos of the product, packaging, and shipping label. Our support team will review the information and provide the appropriate next steps.

How can I contact TinyRacer customer support?

You can contact TinyRacer by email at muytregerwad@gmail.com. Please include your order number when asking about an existing purchase so we can assist you more efficiently.

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