--- product_id: 298827944 title: "Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube" price: "¥6586" currency: JPY in_stock: true url: https://www.desertcart.jp/products/298827944-loctite-37421-271-red-heavy-duty-threadlocker-6-milliliter-tube store_origin: JP region: Japan --- # Heat resistant up to 140°F High-strength bond for heavy-duty bolts Sets in 10 minutes, full cure in 24h Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube **Price:** ¥6586 **Availability:** ✅ In Stock ## Summary > 🔧 Lock it down like a pro — no loosening, no worries! ## Quick Answers - **What is this?** Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - **How much does it cost?** ¥6586 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/298827944-loctite-37421-271-red-heavy-duty-threadlocker-6-milliliter-tube) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Initial Set:** Get your project moving fast with a 10-minute tack time and full strength by next day - • **Extreme Condition Ready:** Engineered to withstand heavy shock, vibration, and harsh chemical environments without fail - • **Professional-Grade Strength:** Trusted by OEMs and pros for unshakable hold on large bolts and studs - • **Easy Disassembly When Needed:** Localized heating plus hand tools make removal hassle-free despite its toughness - • **Universal Metal Compatibility:** Works flawlessly on stainless steel, aluminum, and plated surfaces—even with minor oil presence ## Overview Loctite 37421 271 Red Heavy Duty Threadlocker is a methacrylate-based adhesive designed for securing large bolts and studs (≥1 inch) in automotive and industrial applications. Trusted by professionals and OEMs, it bonds all metals including stainless steel and aluminum, tolerates minor oil contamination, and resists temperatures up to 140°F. It sets quickly in 10 minutes and fully cures in 24 hours, delivering durable, vibration-resistant performance with easy disassembly via localized heating. ## Description Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube : desertcart.in: Industrial & Scientific ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0028OJAIY | | Brand | Loctite | | Brand Name | Loctite | | Colour | Red | | Compatible Material | Aluminium | | Container Type | Tube | | Customer Reviews | 4.8 out of 5 stars 1,062 Reviews | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 00079340374218 | | Included Components | (1) LOCTITE 271 Threadlocker for Automotive | Red, 6 ml Tube | | Item Form | Tube | | Item Package Quantity | 1 | | Item Type Name | Loctite 487232 Threadlocker 271 High Strength Tube, Red, 6-ml | | Item Weight | 5 g | | Manufacturer | Loctite | | Manufacturer Part Number | 37421 | | Material | Methacrylate-based Resin | | Material Type | Methacrylate-based Resin | | Model | 37421 | | Number of Pieces | 1 | | Other Special Features of the Product | Strong | | Special Feature | Strong | | Specific Uses For Product | Automotive, Industrial, DIY, Furniture, Heavy-Duty | | UPC | 079340374218 | | Viscosity Level | Low | | Volume | 6 Millilitres | | Water Resistance Level | Water Repellent | ## Product Details - **Brand:** Loctite - **Item Form:** Tube - **Material:** Methacrylate-based Resin - **Special Feature:** Strong - **Specific Uses For Product:** Automotive, Industrial, DIY, Furniture, Heavy-Duty ## Images ![Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - Image 1](https://m.media-amazon.com/images/I/61ZhKv6ffSL.jpg) ![Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - Image 2](https://m.media-amazon.com/images/I/71EjqzI4AtL.jpg) ![Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - Image 3](https://m.media-amazon.com/images/I/71o-lN4qdML.jpg) ![Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - Image 4](https://m.media-amazon.com/images/I/71FnsHxUF1L.jpg) ![Loctite 37421 271 Red Heavy Duty Threadlocker, 6-Milliliter Tube - Image 5](https://m.media-amazon.com/images/I/71Pkl91z0LL.jpg) ## Questions & Answers **Q: Would this be 2 heavy for gun sight installation or just what i need?** A: It might be to much for 271. It was designed for larger treads 3/8 + hold, and might make it impossible to remove at a latter time because of inability to apply enough heat and torque to remove from small treads like a scope mount. use Blue which is for small threads **Q: Does this product require a primer? The fourth picture on Amazon suggests it does but the instructions do not mention a primer. Stainless + aluminum** A: I didn't need to. I used it on steel threads. Didn't even clean them. Applied this product and assembled. Hardened in minutes. I waiyed 24hrs before use just in case. Excellent product. I've used in the automobile repair industry for 30yrs. **Q: Would this be appropriate for the locking nut on a sink faucet, that is always coming loose and making the faucet wobble?** A: Oh god no! This is for applications of extreme vibration and areas that's could be extremely dangerous if a bolt or nut came loose. All you should need for you faucet is the blue loctite. After using the red, you would need some serious heat and a breaker bar to free that nut if you needed to replace that faucet in the future. **Q: if it is opened/used, how long will it stay fresh/usable?** A: Unopened/opened shelf life of Loctite 271 is two years from date of manufacture. Since exposure to oxygen is what keeps the liquid product stable, and it is packaged in a "breathable" plastic bottle, there is no change in shelf life once the product has been opened. ## Frequently Bought Together - Loctite 37421 271 Red Heavy Duty Threadlocker - Loctite Threadlocker Blue 242 Blue, 0.2 fl oz, 1, Tube - LOCTITE 242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) --- ## 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.jp/products/298827944-loctite-37421-271-red-heavy-duty-threadlocker-6-milliliter-tube](https://www.desertcart.jp/products/298827944-loctite-37421-271-red-heavy-duty-threadlocker-6-milliliter-tube) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-23*