--- product_id: 132175051 title: "330Pcs M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit" brand: "rustark" price: "KD 7.26" currency: KWD in_stock: true reviews_count: 8 category: "Rustark" url: https://www.desertcart.com.kw/products/132175051-330pcs-m2-m3-m4-m5-metric-female-thread-brass-knurled store_origin: KW region: Kuwait --- # premium brass durability 330pcs versatile kit 4 metric sizes M2-M5 330Pcs M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit **Brand:** rustark **Price:** KD 7.26 **Availability:** ✅ In Stock ## Summary > 🧩 Unlock flawless fastening with Rustark’s ultimate brass insert arsenal! ## Quick Answers - **What is this?** 330Pcs M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit by rustark - **How much does it cost?** KD 7.26 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/132175051-330pcs-m2-m3-m4-m5-metric-female-thread-brass-knurled) ## Best For - rustark enthusiasts ## Why This Product - Trusted rustark brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Risk-Free Purchase:** 90-day hassle-free returns plus responsive 12-hour customer support for peace of mind. - • **Complete Precision Kit:** 330 knurled threaded inserts in 4 essential metric sizes for every project need. - • **Effortless Organization:** Transparent, labeled storage box keeps your inserts sorted and ready to deploy. - • **Universal Compatibility:** Perfect for electronics, 3D printing, plastic casings, and micro-motors—engineered for versatility. - • **Premium Brass Craftsmanship:** High-strength, eco-friendly brass ensures lasting durability and corrosion resistance. ## Overview The Rustark 330-piece brass knurled threaded insert kit offers four common metric sizes (M2, M3, M4, M5) housed in a durable transparent box. Crafted from high-quality brass, these inserts provide strong tolerance and long-lasting performance, ideal for electronics, 3D printing, and plastic assembly applications. Backed by responsive customer service and a 90-day return policy, this kit is a must-have for professionals seeking reliable, versatile fastening solutions. ## Description Rustark M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit Specifications: Material: Brass Copper Thread Size: M2 M3 M4 M5 Quantity: 330pcs knurled nuts, come with transparent box. Color: Yellow Main Feature: ---Made of high quality environmentally friendly brass material, high strength and hardness, strong tolerance. ---Assortment contains 4 common sizes, includes M2 M3 M4 M5 ---Widely used in mobile phones, laptops, various plastic casings, communications, micro-motors, computers. ---You can use it for along time, and it will not affect the building. Why should we choose us? Reliable After Sales Service & Advanced Product Quality Professional Team & Exquisite Packaging Exquisite Workmanship & Thread Design Package Includes: 30Pcs........................................M2x4x3.5 30Pcs....................................... M2x6x3.5 30Pcs....................................... M2x8x3.5 20Pcs..................................... M2x10x3.5 30Pcs.......................................... M3x4x5 30Pcs........................................... M3x6x5 20Pcs........................................... M3x8x5 20Pcs......................................... M3x10x5 30Pcs............................................M4x4x6 20Pcs........................................... M4x6x6 20Pcs........................................... M4x8x6 15Pcs......................................... M4x10x6 15Pcs............................................ M5x6x7 10Pcs............................................ M5x8x7 10Pcs.......................................... M5x10x7 Review: Variety - Just what was needed Review: Great for 3d prints - Great for heating up and putting into 3d prints! Lots of size variations ## Features - ✔【PACKAGE INCLUDE】--- The whole set contains 330pcs 4 sizes knurled threaded insert nuts, package in durable transparent box with label. It is easy to distinguish the size of the product, you can choose the suitable one to meet all your needs. - ✔【EXQUISITE CRAFT】--- Made of high quality environmentally friendly brass material, high strength and hardness, strong tolerance, the force is evenly tightened, you can use it for along time, and it will not affect the building. - ✔【THREAD SIZE】--- We prepare 4 common sizes for you, includes: M2 M3 M4 M5, easy to install and carry, it is very convenient for you to carry them. - ✔【WIDE APPLICATIONS】--- Widely used in mobile phones, laptops, various plastic casings, communications, micro-motors, computers, electrical appliances, electronics, toys, watches, lighting, locomotives, etc, and it can be mounted into the taper hole by ultrasonic or heat, or molded during injection. - ✔【WORRY-FREE PURCHASE】--- We will provide you with reliable after-sales service. If you have any questions with our product, please feel free to contact us, I will reply you within 12 hours and we will solve problem for you soon as soon as possible. meanwhile, we provide 90 days free return time, please set your heart at rest to purchase. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KS8KZRW | | Best Sellers Rank | #417,197 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #691 in Nut Inserts | | Date First Available | November 22, 2018 | | Fastener Type | Female Threaded | | Finish Type | Brass | | Head Style | Knurled | | Is Discontinued By Manufacturer | No | | Item Diameter | 2 Millimeters | | Item Weight | 7.4 ounces | | Item model number | R-c-330 | | Manufacturer | Rustark | | Number of Pieces | 330 | | Thread Size | M 2,M 3,M 4,M 5 | | UPC | 799862355112 | ## Product Details - **Brand:** Rustark - **Color:** Transparent - **Item dimensions L x W x H:** 6.69 x 3.94 x 0.87 inches - **Material:** Brass - **Size:** One Size ## Images ![330Pcs M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit - Image 1](https://m.media-amazon.com/images/I/71DHgJ2bGQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Variety *by N***N on December 9, 2019* Just what was needed ### ⭐⭐⭐⭐ Great for 3d prints *by C***S on March 5, 2021* Great for heating up and putting into 3d prints! Lots of size variations ### ⭐ Injection moulding only *by T***S on April 8, 2020* The product description states "...it can be mounted into the taper hole by ultrasonic or heat..." However this style of insert is only suitable for injection moulding - when inserting into thermoplastic after forming, the large knurls on each side leave a void. You want something which will grip the whole way along the side. A screw into these is weaker than a screw straight into plastic. ## Frequently Bought Together - Rustark 330Pcs M2 M3 M4 M5 Metric Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit - Zuorery 1230PCS Metric Screw Assortment Kit, M2 M3 M4 M5 12.9 Grade Alloy Steel, Hex Button Socket Head Cap Screws Nuts and Washers Assortment, Black Zinc Palted, Anti Rust Upgrade --- ## 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.com.kw/products/132175051-330pcs-m2-m3-m4-m5-metric-female-thread-brass-knurled](https://www.desertcart.com.kw/products/132175051-330pcs-m2-m3-m4-m5-metric-female-thread-brass-knurled) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-13*