--- product_id: 256270591 title: "84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit" brand: "rustark" price: "R700" currency: ZAR in_stock: true reviews_count: 5 category: "Rustark" url: https://www.desertcart.co.za/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6 store_origin: ZA region: South Africa --- # 84 pcs assorted sizes M3-M12 Locking design for vibration-proof strength 304 stainless steel, rust & corrosion resistant 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit **Brand:** rustark **Price:** R700 **Availability:** ✅ In Stock ## Summary > 🔧 Fix it once, fix it right — the ultimate screw rescue kit for pros! ## Quick Answers - **What is this?** 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit by rustark - **How much does it cost?** R700 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6) ## 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 - • **Complete Size Range:** 7 metric sizes from M3 to M12 cover every repair need with 84 precision inserts. - • **Reusable & Low Abrasion:** High hardness material minimizes wear, allowing multiple uses without thread damage. - • **Premium 304 Stainless Steel:** Engineered for maximum durability, rust resistance, and long-lasting performance. - • **Vibration-Resistant Locking:** Innovative locking design ensures screws stay secure under stress and motion. - • **Versatile Industrial Applications:** Trusted in aviation, automotive, electronics, and heavy machinery for reliable screw repair. ## Overview The Rustark 84-piece Wire Thread Insert Kit features 7 metric sizes (M3 to M12) of 304 stainless steel helicoil inserts designed to restore stripped screw holes with high precision and durability. Its locking design prevents loosening from vibration, while the rust-resistant steel ensures longevity across demanding industrial and mechanical applications. ## Description Rustark 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit★Product Specification:Name: Wire Screw Sleeve Material: 304 Stainless SteelSize: M3 M4 M5 M6 M8 M10 M12Quantity: 84 pcsMain Function: Screw Repair ★Product Feature:＊Locking Design: locking the the screw into the threaded hole,avoiding sliding wire, improving strength and stability of screws connection.＊Low Abrasion: High hardness,it has little wear and tear in connection with screw. Long service time, Reusable.＊Rust Resistance: Made of 304 stainless steel. Anti-oxidation layer is formed on the surface. Rust-proof and Anti-corrosion.＊Anti-loose: With certain elastic and even load,eliminate the screw and screw hole deviation between the pitch and tooth type and absorb vibration. ＊Easy to use: The damaged screw holes shall be put into the wire screw sleeve without increasing the diameter of the screw hole.★Package Including:M3 x 0.5 x 2D --------------- 20pcsM4 x 0.7 x 2D --------------- 15pcsM5 x 0.8 x 2D --------------- 15pcsM6 x 1 x 2D ----------------- 10pcsM8 x 1.25 x 2D -------------- 8pcsM10 x 1.5 x2D -------------- 8pcsM12 x 1.75 x 2D ------------ 8pcsTotally 84 piece♥ if you have any problems, pls feel free contact us. 100% satisfied after-sale service Review: Great product - They work great Review: Works Flawlessly - Great to have when you strip out a screw hole ## Features - 🔥【7 Size Assorted Wire Screw Sleeve Set】The kit contains 7 kinds of size: M3（20pcs, M4(15pcs), M5(15pcs), M6(10pcs), M8(8pcs), M10(8pcs), M12(8pcs). Totally 84 piece. Package into a plastic grids case and each size sorted a grid separately. - 🔥【304 Stainless Steel】Made of 304 stainless steel, hardness, rust-resistance and anti-corrosion. Not easy to slick, deep thread, no deformation, smooth thread, high precision. High hardness and low abrasion. - 🔥【Strong Connection 】With certain elastic and even load so that it is resistant to vibration. locking-design allows it lock the the screw into the threaded hole,avoiding sliding wire. Greatly improve strength and stability of screws connection. - 🔥【Widely Application】Widely used in aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment, radiators, and semiconductor equipment. - 🔥【100% Reliable After-sale Service】We offer you reliable after-sales service. If you have any questions about our products or any problems with your packages, please feel free to contact us. We will reply you within 24 hours and we will try our best to solve the problems until you are satisfied. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Y32V7KK | | Best Sellers Rank | #49,444 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #200 in Hardware Nuts & Bolts | | Brand | Rustark | | Color | Silver | | Colour | Silver | | Compatible Groove Diameter | 0.64 Centimeters | | Customer Reviews | 4.6 out of 5 stars 393 Reviews | | Drive Style | External Hex | | Exterior Finish | Stainless Steel | | Exterior finish | Stainless Steel | | Fastener Type | Helicoil | | Fastener type | Helicoil | | Finish Types | Stainless Steel | | Grade Rating | industrial | | Inside Thread Size | M3, M4, M5, M6, M8, M10, M12 | | Item Dimensions | 12.6 x 6.5 x 2.2 centimeters | | Item Weight | 0.16 Kilograms | | Manufacturer | Rustark | | Material | Stainless Steel 304 | | Material Type | Stainless Steel 304 | | Maximum Shear Strength | 275 MPa | | Metal Type | Stainless Steel | | Metal type | Stainless Steel | | Model | R-YT84 | | Number Of Items | 84 | | Number of Packs | 1 | | Number of Pieces | 84 | | Part Number | R-YT84 | | Screw Head Style | Flat | | Set Name | 84 Pcs 304 Stainless Steel Metric Wire Thread Inserts Assortment Kit | | Size Name | One Size | | Thread Class | Standard | | Thread Coverage | Partially Threaded | | Thread Size | M3, M4, M5, M6, M8, M10, M12 | | Thread Style | Right Hand | | Thread Type | Iso Metric | | Thread size | M3, M4, M5, M6, M8, M10, M12 | ## Product Details - **Material:** Stainless Steel - **Fastener type:** Helicoil - **Thread size:** M3, M4, M5, M6, M8, M10, M12 - **Exterior finish:** Stainless Steel - **Colour:** Silver ## Images ![84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit - Image 1](https://m.media-amazon.com/images/I/71pyU9nIi-L.jpg) ## Questions & Answers **Q: can this be used on bike pedal?** A: Width and depth must be considered to use these coils. Also, they must match the threads on the pedal bolt. If all three match, then yes, it can be used to repair a bike pedal. **Q: Can thisitem be used on the exhaust system ?** A: Yes, used it on head bolt to exhaust on a mogorcycle **Q: does this kit come with an install tool?** A: No. The install kit is separate **Q: Does this kit come with a 20mm? I need a outer diameter 20 mm with an inside diameter of 18mm.** A: no ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by J***. on 19 June 2025* They work great ### ⭐⭐⭐⭐⭐ Works Flawlessly *by R***L on 28 January 2026* Great to have when you strip out a screw hole ### ⭐⭐⭐⭐⭐ Excellent *by K***R on 23 June 2025* Work perfect ## Frequently Bought Together - Rustark 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit - Orion Motor Tech Thread Repair Kit, Metric Helicoil Repair Kit with HSS Drill Bits Thread Inserts Taps Breakoff Installation Tools, Portable Rethreading Tool Kit in M5 M6 M8 M10 M12 Sizes - Loctite Threadlocker Red 271 - Permanent Thread Lock Glue for Nuts, Bolts, & Fasteners, High Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack --- ## 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.co.za/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6](https://www.desertcart.co.za/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-10-10*