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๐ง Lock it down like a pro, or donโt bother at all!
LOCTITE 37421 Red Heavy Duty Threadlocker is a professional-grade adhesive trusted by OEMs and mechanics alike. Designed for large bolts and studs (โฅ1 inch), it bonds quickly (10-minute set, full cure in 24 hours) and withstands extreme shock, vibration, chemicals, and temperatures up to 140ยฐF. Compatible with all metals including stainless steel and aluminum, it offers enhanced oil tolerance for superior performance. Disassembly requires heat, ensuring a secure, durable hold for critical automotive and industrial applications.









| ASIN | B0028OJAIY |
| Best Sellers Rank | #8,019 in Automotive ( See Top 100 in Automotive ) #28 in Thread Lock Sealers |
| Brand | Loctite |
| Brand Name | Loctite |
| Color | Red |
| Compatible Material | Aluminum, Stainless Steel |
| Container Type | Tube |
| Customer Reviews | 4.8 out of 5 stars 1,066 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 | automotive-thread-lock-sealers |
| Item Weight | 0.01 Pounds |
| Manufacturer | Loctite |
| Material | Metal-based formulation |
| Material Type | Metal-based formulation |
| Model | 37421 |
| Other Special Features of the Product | Strong |
| Special Feature | Strong |
| Specific Uses For Product | Automotive, Industrial, DIY, Furniture, Heavy-Duty |
| UPC | 079340374218 |
| Viscosity | Low viscosity |
| Volume | 6 Milliliters |
| Water Resistance Level | Water Repellent |
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