Best Loctite For Guns

Threaded fasteners on firearms are prone to loosening from repeated recoil and vibration, which can affect accuracy and safety. Using a reliable threadlocker like this helps keep screws and mounts secure without permanent bonding.

Loctite Threadlocker Blue 242 is a trusted choice for most gun maintenance tasks, offering medium strength that holds tight but allows for future disassembly with standard hand tools. It's ideal for users who want dependable retention but may need to adjust or remove parts later.

• Medium-strength formula: Secures 6–19mm fasteners, suitable for most gun screws and mounts
• Quick setting: Begins to set in 10 minutes, fully cures in 24 hours for fast turnaround
• Corrosion protection: Shields threads from rust and corrosion, reducing long-term maintenance

Compared to permanent threadlockers, Blue 242 prioritizes removability and ease of use, making it a practical default for most firearm applications. The tradeoff is that it’s not suitable for situations requiring a permanent bond.

Firearms, like many mechanical devices, face vibration and environmental stress that can loosen screws and mounts. A versatile threadlocker ensures secure fastening across a wide range of gun-related and household uses.

ESKONKE Thread Locker Blue 243 stands out for its adaptability, working on all metal screws below M32 and suitable for guns, vehicles, and household equipment. It’s a strong pick for those who want a single product for multiple applications, including firearm maintenance.

• Wide compatibility: Effective on all metal screws below M32, covering most firearm and accessory needs
• Anaerobic solidification: Provides tight sealing to prevent rust, leakage, and corrosion
• Precision nozzle: Allows for controlled, mess-free application on small gun parts

Unlike some threadlockers that are limited to specific fastener sizes or types, ESKONKE 243 offers broad utility. The main tradeoff is that it may not be as specialized as gun-specific formulas for certain precision tasks.

Firearm accessories like scope mounts and sling swivels are especially prone to loosening, which can affect accuracy and handling. A purpose-designed adhesive helps keep these components tight.

Uncle Mike's Gun-Tite Glue is tailored for gun owners, offering a resealable tube for repeated use and easy removal when adjustments are needed. It’s best for those focused on securing mounts, bases, and worn screws without permanent bonding.

• Resealable 6ml tube: Convenient for multiple small applications and storage
• Removable formula: Allows for future adjustments or part replacements
• Anchors mounts and swivels: Designed for firearm-specific fasteners and accessories

Compared to general-purpose threadlockers, Gun-Tite is optimized for gun hardware and frequent adjustments. The tradeoff is a smaller tube size, which may not suit high-volume users.

Oil and residue are common on firearm threads, which can interfere with standard threadlockers and reduce effectiveness. An oil-tolerant formula ensures reliable bonding even without perfect cleaning.

Loctite 243 Blue Threadlocker is engineered to cure on as-received fasteners, making it a great choice for gun owners who want dependable results without extensive prep. It’s ideal for those who maintain firearms in real-world conditions.

• Oil-tolerant curing: Bonds securely even on oily or uncleaned threads
• Medium strength: Suitable for most firearm screws and mounts, removable with hand tools
• 50ml size: Offers ample supply for frequent maintenance

While standard threadlockers may fail on oily surfaces, Loctite 243 maintains grip. The tradeoff is a slightly higher price and less specialization for very small screws.

Some firearm components, such as barrel nuts or heavy-duty mounts, require a permanent bond to prevent loosening under extreme vibration or stress. A high-strength threadlocker ensures these parts stay put.

Loctite Red 271 is designed for permanent locking of large fasteners and is only removable with heat. It’s best for users who want a set-and-forget solution for critical, non-adjustable parts.

• Permanent formula: Only removable by heating to 500°F, ideal for parts that should not loosen
• Heavy-duty use: Secures fasteners up to 1 inch (25mm) in diameter
• Moisture-resistant: Protects against rust and corrosion in harsh environments

Compared to medium-strength options, Red 271 prioritizes long-term security over adjustability. The tradeoff is that disassembly requires special tools and heat.

Applying threadlocker in tight or overhead spaces can be messy with liquids. A stick applicator offers a cleaner, more controlled solution for firearm screws and mounts.

Loctite 37643 Blue Threadlocker Stick delivers medium-strength bonding in a wax-like stick, making it easy to apply in any orientation. It’s ideal for users who want minimal mess and precise placement, especially during complex gun assembly.

• Stick format: Allows for clean, controlled application even overhead
• Medium strength: Suitable for most gun fasteners, removable with tools
• Self-feeding applicator: Convenient for quick, repeat use

Compared to liquid threadlockers, the stick format prioritizes ease of use and cleanliness. The tradeoff is a smaller volume and possible limitations for very small threads.

Firearms exposed to high heat, such as those used in rapid firing or harsh environments, need a threadlocker that maintains hold under temperature extremes. High-temp formulas prevent loosening when standard products might fail.

Loctite 242 Threadlocker is trusted by professionals for its high-temperature tolerance and compatibility with all metals, making it a solid choice for gun owners who demand reliability in demanding conditions.

• High-temp resistance: Maintains bond in elevated temperatures, suitable for heated gun parts
• Works on all metals: Compatible with stainless, aluminum, and plated surfaces
• Quick setting: Begins to set in 5 minutes, fully cures in 24 hours

Compared to standard threadlockers, this formula prioritizes temperature stability. The tradeoff is that it may be more than needed for casual or low-heat firearm use.

Tiny screws on firearms, such as those on optics or trigger assemblies, require a low-strength threadlocker to prevent stripping and allow for future adjustments. Using the wrong strength can make removal difficult or damage threads.

Loctite 222 Purple is formulated for fasteners under 1/4 inch (6mm), offering secure hold with easy removability. It's ideal for gun owners working with delicate or frequently adjusted parts.

• Low-strength formula: Perfect for small screws that need occasional adjustment
• Non-corrosive: Protects threads without damaging sensitive components
• Quick setting: Starts to cure in 20 minutes, fully cures in 24 hours

Compared to medium or high-strength options, Purple 222 prioritizes easy disassembly and thread protection. The tradeoff is that it’s not suitable for high-stress or large fasteners.

Regular firearm maintenance can require significant amounts of threadlocker, especially for those with multiple guns or frequent projects. A budget-friendly, large-volume option helps keep costs down without sacrificing basic performance.

GNEOCO Thread Lock Blue offers a 50ml bottle of medium-strength formula, suitable for most gun screws and general hardware. It’s a practical pick for users who value quantity and affordability over specialized features.

• 50ml bottle: Provides ample supply for high-volume use
• Medium strength: Secures most firearm fasteners, removable if needed
• Rust and water resistant: Protects against environmental wear

Compared to premium brands, GNEOCO prioritizes value and quantity. The tradeoff is less brand recognition and fewer specialty features.

Regular firearm maintenance can require significant amounts of threadlocker, especially for those with multiple guns or frequent projects. A budget-friendly, large-volume option helps keep costs down without sacrificing basic performance.

GNEOCO Thread Lock Blue offers a 50ml bottle of medium-strength formula, suitable for most gun screws and general hardware. It’s a practical pick for users who value quantity and affordability over specialized features.

• 50ml bottle: Provides ample supply for high-volume use
• Medium strength: Secures most firearm fasteners, removable if needed
• Rust and water resistant: Protects against environmental wear

Compared to premium brands, GNEOCO prioritizes value and quantity. The tradeoff is less brand recognition and fewer specialty features.