Tired of Short Screws That Don't Reach? Meet the LuKaiSen Grade 12.9 M3 Long Fastener Solution. In precision DIY and mechanical engineering, sometimes a standard screw just won't cut it. Whether you are building a custom 3D printer, securing a drone frame, or repairing RC vehicles, you need length and strength. The LuKaiSen 481PCS M3 Long Screw Assortment is designed to fill that gap with high-tensile 12.9 grade alloy steel hardware. Why Grade 12.9 Alloy Steel? When your project involves high-speed movement or heavy stress, 12.9 grade carbon steel is the industry standard. It offers significantly higher yield strength than 304 stainless steel. Combined with our Black Oxide Treatment, these bolts provide a professional look and reliable performance for years to come. Engineered for Stability: We don't just give you the bolts. Every size is supported by: Flat Washers: To distribute pressure and protect your surfaces. Spring Washers: To provide tension and resist loosening caused by vibration. Metric Nuts: For a secure, permanent hold. Whats in the Box? M3 x 30mm (30pcs), 35mm (25pcs), 40mm (25pcs), 45mm (20pcs), 50mm (20pcs) M3 Hex Nuts (120pcs) M3 Flat Washers (120pcs) M3 Spring Washers (120pcs) 1 x Matching Allen Wrench 1 x Portable Organizer Box LuKaiSen Professional Hardware: Precision you can trust, strength you can feel. Add to your toolkit today!
Shipping & Delivery Information
Our Shipping Promise
At Slickpurchase, we understand how important your purchases are. That's why we take extra care with every package we send. All orders are shipped in double-boxes with full insurance for additional protection, ensuring your items arrive safely.
Processing & Shipping Timeline
- Processing Time: Orders are processed within 3-6 business days
- Domestic Delivery: Typically 6-10 business days
Please note that delivery times are estimates and may vary based on your location, weather conditions, or other unforeseen circumstances.
Shipping Destinations
Slickpurchase currently only ships to the United States.
Shipping Costs
We are pleased to offer free standard shipping on all orders within the United States.
Discreet Packaging
We respect your privacy. All Slickpurchase packages are shipped with complete discreet packaging. The product name, description, sender's name, and any information that hints about the contents are encrypted. Your package will arrive without any indication of what's inside, ensuring your purchase remains confidential.
Signature Requirements
Important Note: All orders valued above $250 will require a signature upon delivery for your protection.
Order Tracking
Once your order ships, you'll receive a tracking number via email so you can monitor your shipment's progress every step of the way.
Lost or Delayed Shipments
If your package is lost or significantly delayed, please contact our support team immediately, and we will assist you in resolving the issue.
Additional Security Measures
For your protection, we may contact you for additional order verification of the payment method on certain orders.
Questions or Concerns?
For details on returns and refunds, please refer to our Return Policy page.
For any questions about shipping or delivery, please contact our customer service team at support@slickpurchase.com.

