Loctite 88448 277 Red Threadlocker – High Strength, 50 mL for 1-1/2" Threads

Secure large fasteners with confidence using Loctite® 277 High-Strength Threadlocker, the go-to solution for heavy-duty applications where vibration, shock, and high torque are a concern. This 50 mL bottle of red, permanent-grade liquid threadlocker is ideal for fasteners up to 1-1/2 inches in diameter, delivering a strong bond that resists loosening due to heavy use or thermal cycling.

Designed for use on metal-to-metal applications, Loctite 277 is perfect for motors, gearboxes, heavy machinery, firearm maintenance, and other industrial assemblies where strength and reliability are critical.

Key Features:

• Size: 50 mL bottle

• Color: Red (permanent)

• Thread Size Compatibility: Up to 1-1/2” diameter fasteners

• Strength: High strength – requires heat or special tools for removal

• Material Type: Polymer-based liquid adhesive

• Application: Secures bolts, studs, and fasteners to prevent loosening from vibration

• Cure Time: Full cure in 24 hours; fixture in ~10 minutes

• Use on: Metals (steel, stainless, plated surfaces)

• Country of Origin: United States

You may also like:

• Need a removable option? Try Loctite 242 Blue Threadlocker – Medium Strength, 10 mL

• For wicking into pre-assembled parts, use Loctite 290 Green Threadlocker – Penetrating Grade

• Want a starter set? Explore Loctite Threadlocker Mini Tubes Pack – Red & Blue Combo