LOCTITE 277 THREADLOCKER HIGH 50ML

For large fasteners that demand uncompromising holding power, Loctite® 277 delivers industrial-grade strength and reliability. This red, high-strength, high-viscosity threadlocker is specifically designed for large bolts and heavy-duty assemblies, providing permanent locking and sealing to prevent loosening, leaks, and corrosion under vibration or thermal stress.

Formulated from methacrylate-based chemistry, Loctite 277 cures between close-fitting metal surfaces, creating a tough bond ideal for use in construction equipment, mining machinery, and industrial manufacturing. The high viscosity prevents migration during assembly, ensuring accurate application and consistent curing — even on vertical surfaces.

Loctite 277 performs reliably on both active and passive metals, tolerates minor oil contamination, and fluoresces under UV light for easy quality control. Once cured, removal requires localized heat and hand tools, making it ideal for permanent fastening applications where disassembly is not expected.

Key Features:

• High-strength red threadlocker for large fasteners and heavy-duty applications

• High viscosity prevents adhesive migration during assembly

• Resists vibration, corrosion, and leakage

• Breakaway torque: 32 Nm (M10 bolts)

• Oil-tolerant formulation – performs on lightly contaminated threads

• Fluorescent under UV light for easy inspection

• Ideal for large threads and permanent assemblies

• Temperature resistant up to +180°C

• Fixture time: Steel 30 min / Brass 25 min / Stainless steel 270 min

Specifications:

• Brand: Loctite®

• Model: 277

• Type: High Strength Threadlocker (Red)

• Size: 50 mL

• Viscosity: High

• Breakaway Torque: 32 Nm (M10 bolts)

• Service Temperature Range: –55°C to +180°C

• Disassembly: Requires localized heat

• Application: Large bolts, studs, and heavy machinery assemblies

Powerful, permanent, and purpose-built — Loctite® 277 provides the strength you need to lock large fasteners in the toughest industrial environments.