--- product_id: 737076409 title: "Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated" brand: "kadrick" price: "€ 6.73" currency: EUR in_stock: false reviews_count: 5 url: https://www.desertcart.gr/products/737076409-kadrick-small-metric-screws-suitable-for-3d-printer-diy-400 store_origin: GR region: Greece --- # 400 pcs M3 screws & nuts Organized in sturdy plastic storage box Grade 12.9 ultra-strong alloy steel Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated **Brand:** kadrick **Price:** € 6.73 **Availability:** ❌ Out of Stock ## Summary > 🔧 Screw it right, screw it tight — DIY like a pro! ## Quick Answers - **What is this?** Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated by kadrick - **How much does it cost?** € 6.73 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/737076409-kadrick-small-metric-screws-suitable-for-3d-printer-diy-400) ## Best For - kadrick enthusiasts ## Why This Product - Trusted kadrick brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Assembly:** Hex socket head screws fit by hand—no wrench needed for quick fixes. - • **Rust-Free, Mess-Free:** Black zinc plating keeps your hands clean and parts corrosion-resistant. - • **Organized for Efficiency:** Compact, clear storage box keeps all 400 pieces sorted and ready to go. - • **Precision DIY Powerhouse:** Perfectly sized M3 screws for flawless 3D printing & RC projects. - • **Ultimate Strength Guarantee:** Grade 12.9 alloy steel ensures durability that won’t let your projects fail. ## Overview The Kadrick Small Metric Screws assortment offers 400 high-grade M3 screws and nuts crafted from Grade 12.9 alloy steel with a black zinc finish for superior rust resistance and a clean, non-oily touch. Designed for precision DIY projects like 3D printing and RC cars, these hex socket head cap screws can be hand-tightened without tools and come neatly organized in a durable plastic box. Backed by rigorous quality testing and a 24-month warranty, this set is the ultimate fastener solution for millennial makers demanding reliability and style. ## Description Features: Suitable for Small DIY Projects: Small black screws and nuts, suitable for small DIY projects such as 3D printing and RC cars DIY. Black and Not Oily: This product adopts a Black Zinc Pated process, which is different from the traditional Black Oxide process.Has a better rust prevention function, not easy to be contaminated with dust, and the most important thing is not to make your hands or the small items oily. High Quality Alloy Steel:12.9 grade alloy steel with superior rust resistance ensures long lasting results， corrosion resistance, anti-aging, good toughness. Well packed: We use a small plastic box with clear classification to place these small screws. To prevent screw confusion, we also prepare another outer packaging to ensure that the products are not damaged during transportation. Specifications: Surface finish：Black Zinc Plated Pitch:The distance between adjacent threads of these Metric M3 Screws is 0.5mm Material: 12.9 Grade Alloy Steel Screw Type: Hex Socket Head Cap Screw Quantity:400pcs Screws+1pc Allen Wrench (Free) Package Included: M3 X 6 mm 40pcs M3 X 8 mm 40pcs M3 X 10 mm 30pcs M3 X 12 mm 30pcs M3 X 16 mm 30pcs M3 X 20 mm 30pcs M3 Nuts 200pcs Total:400 pcs M3 Alloy Steel Hex Socket Head Cap Screws and Nuts Note: Small Parts, Keep Away From Children Under 5 Years Old. Review: Just what was needed - good quality and affordable - Exactly as expected. Good quality and just the right sizes and plenty of them for a great price. I ordered these to construct a 3d print project (fold out SD/MicroSD card holder). The 16mm head was just slightly (such a tiny little bit) bigger in diameter than the 20 mm. So i had to use one of the 20 mm instead for one corner. This will probably not make a bit of difference for literally anyone else, but figured i'd mention just in case. I placed and removed one screw like ten times and the black didn't come off, the head stayed the right shape so quality seems good. Comes with a helpful little alan key and a teeny magnet that makes the tiny pieces just a little bit easier to use when trying to pick up and place them. Review: Good little kit - Bought for modding 3d printer, worked great ## Features - 【Suitable for small DIY projects】 These small screws and nuts are especially suitable for 3D printing DIY and RC car enthusiasts. - 【Not oily and rust proof】 These black zink plated finish screws are not oily, they will not dirty your hands or DIY items, and the rust proof performance is better than other oiled screws. - 【Good Storage and assortment】All these screws are sacked in a sturdy easy-use plastic storage box, organized Conveniently and Easily. - 【Easy to operate and strong】 Hex socket head cap screws can be screwed into the nut directly by hand without a wrench, Grade 12.9 alloy steel screws are ultra-high strength and not easy to break. - 【Brand guarantee】: Kadrick specializes in the production and development of fasteners. Our products have undergone rigorous testing, so you can use them with confidence. Additionally, we provide a 24-month after-sales warranty service. If you have any questions, please feel free to contact us. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B51BFSWZ | | Brand | Kadrick | | Customer Reviews | 4.8 out of 5 stars 812 Reviews | | Fastener Type | Hex | | Item Dimensions | 15.2 x 7.6 x 2.5 Centimeters | | Item dimensions L x W x H | 15.2 x 7.6 x 2.5 Centimeters | | Manufacturer | Kadrick | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model | m3 | | Number Of Items | 400 | | Number of Pieces | 400 | | Part Number | FB-M3-400-BH-0003 | | Size | Black 400 PCS | | Size Name | Black 400 PCS | | UPC | 716035478782 | | Unit Count | 1 Count | ## Product Details - **Brand:** Kadrick - **Fastener Type:** Hex - **Item dimensions L x W x H:** 15.2 x 7.6 x 2.5 Centimeters - **Material:** Alloy Steel - **Size:** Black 400 PCS ## Images ![Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Image 1](https://m.media-amazon.com/images/I/71k0i9UL3dL.jpg) ![Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Image 2](https://m.media-amazon.com/images/I/719DHdB3XvL.jpg) ![Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Image 3](https://m.media-amazon.com/images/I/71HxdzBRMrL.jpg) ![Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Image 4](https://m.media-amazon.com/images/I/71UFQa3UTgL.jpg) ![Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Image 5](https://m.media-amazon.com/images/I/71ZoaMY4JdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Just what was needed - good quality and affordable *by S***Y on 10 August 2025* Exactly as expected. Good quality and just the right sizes and plenty of them for a great price. I ordered these to construct a 3d print project (fold out SD/MicroSD card holder). The 16mm head was just slightly (such a tiny little bit) bigger in diameter than the 20 mm. So i had to use one of the 20 mm instead for one corner. This will probably not make a bit of difference for literally anyone else, but figured i'd mention just in case. I placed and removed one screw like ten times and the black didn't come off, the head stayed the right shape so quality seems good. Comes with a helpful little alan key and a teeny magnet that makes the tiny pieces just a little bit easier to use when trying to pick up and place them. ### ⭐⭐⭐⭐⭐ Good little kit *by C***N on 5 April 2026* Bought for modding 3d printer, worked great ### ⭐⭐⭐⭐⭐ Nice little assortment *by J***2 on 1 April 2026* As described quick shipping. Worked well for my 3-D printing project. ## Frequently Bought Together - Kadrick Small Metric Screws Suitable for 3D Printer DIY, 400 Pcs M3 Screw and Nut Assortment Hex Socket Head Cap, 12.9 Grade Alloy Steel,Black Zinc Plated - Kadrick Metric Screw Assortment, 660 Pcs M2 Screws, M2*4mm/6mm/8mm/10mm/12mm/16mm,12.9 Grade Alloy Steel, Metric Hex Socket Head Cap Screws Nuts Washers Kit, Black Zinc Plated Anti Rust Upgrade - Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/737076409-kadrick-small-metric-screws-suitable-for-3d-printer-diy-400](https://www.desertcart.gr/products/737076409-kadrick-small-metric-screws-suitable-for-3d-printer-diy-400) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-05-27*