Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack 1 Pack Blue (Removable)
Overview
Loctite Threadlocker Blue 242 is a medium-strength anaerobic adhesive in a 6 ml bottle formulated to lock and seal metal threaded fasteners while still allowing disassembly with standard hand tools. It’s engineered for fasteners roughly 6–19 mm in diameter and is a good choice for lawn mowers, small engines, power equipment, bicycles, and general workshop or home repairs where vibration would otherwise loosen bolts. The formula sets in about 10 minutes and reaches full cure in 24 hours, resists rust and corrosion on plated and stainless substrates, and eliminates the need for some lock washers and special nuts while still permitting service when required.
Key Features
- Volume: 6 ml single tube — convenient for one-off repairs and smaller maintenance jobs.
- Fast set: initial handling set in about 10 minutes; full functional cure in 24 hours.
- Recommended fastener range: effective for bolts and studs roughly 6–19 mm diameter.
- Substrate compatibility: formulated for metal fasteners, particularly stainless steel and plated surfaces; anaerobic chemistry prevents corrosion.
- Removable medium strength: resists vibration loosening while allowing disassembly with hand tools (no heat or special chemicals required for routine servicing).
Pros & Cons
Pros
- Medium-strength: locks fasteners securely yet allows disassembly with standard hand tools.
- Quick initial set (~10 minutes) and full cure in 24 hours for faster repairs.
- Protects threads from rust and corrosion, extending component life.
- Designed for 6–19 mm fasteners — ideal for common bolts on small engines and equipment.
- Works well on less-active metals such as stainless steel and plated surfaces.
Cons
- Not permanent — unsuitable where a permanent, tamper-proof bond is required (use high-strength variants).
- 6 ml tube is small for large projects or frequent professional use; you may need multiple tubes.
- Full cure takes 24 hours, so loaded assemblies shouldn’t be stressed immediately.
- Not intended for porous materials or some plastics without testing for compatibility.
Recommendations
- Home lawn mower and garden equipment maintenance — secure engine bolts and linkage fasteners that experience vibration.
- Bicycle and motorcycle routine servicing where you want secure fasteners but need to remove them later.
- Small engine and power tool repair shops for threaded fasteners on motors, pumps, and gearboxes.
- Appliance and HVAC maintenance where plated or stainless fasteners need corrosion resistance without permanent bonding.
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