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🔧 Lock it down like a pro — don’t let your bolts bail on you!
LOCTITE 37421 271 Red Heavy Duty Threadlocker is a methacrylate-based resin adhesive designed for securing large bolts and studs (≥1 inch) in automotive and industrial applications. It bonds to all metals including passive substrates, sets in 10 minutes, fully cures in 24 hours, and withstands shocks, vibrations, chemicals, and temperatures up to 140°F. Trusted by professionals and OEMs, it ensures durable, water-repellent fastening with easy disassembly via localized heating.
| ASIN | B0028OJAIY |
| Best Sellers Rank | #9,069 in Automotive ( See Top 100 in Automotive ) #31 in Thread Lock Sealers |
| Brand Name | Loctite |
| Color | Red |
| Compatible Material | Aluminum, Stainless Steel |
| Container Type | Tube |
| Customer Reviews | 4.8 4.8 out of 5 stars (670) |
| 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 | automotive-thread-lock-sealers |
| Item Weight | 4.54 g |
| Manufacturer | Loctite |
| Material Type | Methacrylate-based Resin |
| Model | 37421 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Strong |
| Part Number | 37421 |
| Specific Uses For Product | Automotive, Industrial, DIY, Furniture, Heavy-Duty |
| UPC | 079340374218 |
| Viscosity Level | Low |
| Volume | 6 ml |
| Water Resistance Level | Water Repellent |
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