Adhesive / Sealant

Loctite Grade C Threadlocker 50ml

Name: Loctite Grade C Threadlocker 50ml
Brand: Hong Teck Hin
Availability: InStock

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Description

Loctite Grade C Threadlocker is a commercial-grade, medium-strength anaerobic adhesive engineered specifically for precision industrial assembly. Formulated to lock and seal fine-threaded nuts, bolts, and studs, this commercial threadlocker prevents component loosening caused by vibration, shock, and thermal expansion while remaining removable with standard hand tools.

Key Performance Features

Medium Strength & Viscosity: Provides reliable threadlocking and sealing for fine-threaded fasteners without risking permanent assembly locking.
Mil-Spec Compliant: Tested to the lot requirements of Military Specification Mil-S-22473E (regional approval).
Anaerobic Curing Mechanism: Cures efficiently in the absence of air when confined between tight-fitting metal surfaces.
Vibration & Shock Resistance: Protects critical assemblies, machinery, and equipment against tension relaxation under operational stress.

Technical Specifications

Product Name / Part Number: Loctite Grade C
Strength Class: Medium
Viscosity: Medium / Low-Viscosity
Color: Blue
Curing Type: Anaerobic
Primary Application: Threadlocking and thread sealing (fine threads)
Thermal Disassembly Limit: Localized heating to approx. 250 °C (for long engagement lengths)
Optimal Storage Temperature: 8 °C to 21 °C (Storage below 8 °C or above 28 °C may compromise adhesive integrity)
Quality Standard: LMS dated August 23, 1999

Application & Assembly Guidelines

Surface Preparation: Ensure surfaces are clean, dry, and oil-free using a degreasing agent.
Inactive Metals / Accelerators: For inactive metals or cold ambient temperatures, pre-treat threads with surface activators.
Dispensing Instructions:
- Thru Holes: Apply several drops directly onto the bolt at the nut engagement zone.
- Blind Holes: Apply drops inside the internal threads down to the bottom of the hole.
- Sealing Applications: Dispense a 360° bead onto the male fitting's leading threads, leaving the first thread uncovered.
Disassembly & Cleanup: Remove using standard hand tools. If excessive thread length increases breakaway torque, apply localized heat (~250 °C) and disassemble while hot. Remove cured residue with solvent soaking and wire brushing.

Substrate & Chemical Compatibility

Not recommended for pure oxygen, oxygen-rich systems, chlorine, or strong oxidizing materials.
Not recommended for use on thermoplastics due to the risk of stress cracking.
Verify aqueous washing solution compatibility prior to bonding to avoid cure inhibition.

Frequently Asked Questions (FAQ)

Is LOCTITE Grade C threadlocker military-specification approved?

Yes, LOCTITE® GRD C is tested to the lot requirements of Military Specification Mil-S-22473E under regional approvals.

How do engineers disassemble parts locked with Loctite Grade C?

Loctite Grade C is medium strength and can be disassembled using standard hand tools. For high engagement lengths where extra torque is required, apply localized heat to roughly 250 °C and disassemble while hot.

When is a surface activator required with Loctite Grade C?

An activator such as LOCTITE® Activator 7471 or 7649 is recommended when applying the adhesive to inactive metal surfaces or when working in low-temperature environments that slow curing.