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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 adhesive trusted by automotive pros for securing large bolts and studs (≥1 inch) across all metals. It sets quickly in 10 minutes, fully cures in 24 hours, and withstands shocks, vibrations, chemicals, and temperatures up to 140°F. Designed for heavy-duty applications like suspension and wheel studs, it offers durable, water-repellent bonds with easy disassembly via localized heating.
| ASIN | B0028OJAIY |
| Best Sellers Rank | #14,418 in Automotive ( See Top 100 in Automotive ) #38 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 (661) |
| 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 | 0.01 Pounds |
| 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 Milliliters |
| Water Resistance Level | Water Repellent |
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