--- 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: "122.25 DT" currency: TND in_stock: true reviews_count: 5 category: "Rustark" url: https://www.desertcart.tn/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6 store_origin: TN region: Tunisia --- # 84 precision inserts 7 metric sizes included 304 stainless steel durability 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:** 122.25 DT **Availability:** ✅ In Stock ## Summary > 🔧 Fix it once, fix it right — the ultimate thread rescue kit! ## 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?** 122.25 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 Metric Range:** From M3 to M12, 7 sizes cover every repair need with 84 total inserts. - • **Locking Helicoil Design:** Prevents screw loosening and sliding with vibration-resistant elastic locking. - • **Effortless Repair & Reuse:** Restore damaged threads without enlarging holes; inserts are reusable for multiple fixes. - • **Premium 304 Stainless Steel:** Rust-proof, corrosion-resistant, and built to last with industrial-grade hardness. - • **Versatile Industrial Applications:** Trusted in aviation, automotive, electronics, and heavy machinery for reliable screw stability. ## Overview The Rustark 84-piece Wire Thread Insert Kit offers a comprehensive assortment of M3 to M12 helicoil inserts made from premium 304 stainless steel. Designed for high durability, corrosion resistance, and vibration-proof locking, this kit ensures professional-grade screw repair and thread reinforcement across diverse 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: f - worked good ## 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 | #25,363 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #113 in Hardware Nuts & Bolts | | Brand | Rustark | | Color | Silver | | Colour | Silver | | Compatible Groove Diameter | 0.64 Centimeters | | Customer Reviews | 4.6 out of 5 stars 388 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 ### ⭐⭐⭐⭐⭐ f *by T***9 on 1 April 2026* worked good ### ⭐⭐⭐⭐⭐ 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.tn/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6](https://www.desertcart.tn/products/256270591-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-26*