10 Best Medium Strength Thread Lockers For 6 To 19Mm Fasteners

Are you looking for the best medium strength thread lockers for 6 to 19mm fasteners? Real users have found peace of mind with these thread lockers, saving them from costly repairs.

Are you tired of loose bolts? Do your fasteners keep coming undone? We have the solution for you!

This guide covers the best medium strength thread lockers. Keep reading to find the perfect one for your needs.

Real users love the peace of mind thread lockers provide. One user said, “I never worry about vibration loosening bolts anymore!” Another shared, “It saved me from a costly repair when my bike’s bolts stayed put.”

We’ll help you find the ideal product to keep everything tight. Get ready to say goodbye to loose fasteners for good!

List of Top 10 Medium Strength Thread Lockers For 6 To 19Mm Fasteners

Image Title Best For Price
Permatex 24200 Threadlocker Blue Medium Strength,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable with Hand Tools 6 ml Permatex 24200 Threadlocker Blue Medium Strength,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable with Hand Tools 6 ml

Permatex Threadlocker Blue is perfect for car mechanics and home fixers who want to keep bolts secure in cars or machines. It’s great for anyone doing jobs on engines, pumps, or driveshafts to stop nuts from loosening.

Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack Loctite Threadlocker Blue 242 – Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion – 6 ml, 1 Pack

Tired of loose nuts and bolts? Loctite Threadlocker Blue 242 is perfect for anyone who wants to keep things secure. It works great on small engines, mowers, and power tools.

Vigorder Thread Lock Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage, Blue and Red Vigorder Thread Lock Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage, Blue and Red

This kit is perfect for DIYers and pros who want a strong, reliable lock on threads. It’s ideal for automotive repair, home projects, and industrial work.

Red Purple and Blue Lock Tight Threadlocker 10ml-3Pack, Low, Medium and High Strength locktight Thread Locker for Metal, Fasteners, Nuts, Bolts to Against Losening and Seal Red Purple and Blue Lock Tight Threadlocker 10ml-3Pack, Low, Medium and High Strength locktight Thread Locker for Metal, Fasteners, Nuts, Bolts to Against Losening and Seal

This set is perfect for auto hobbyists, motorcyclists, RC enthusiasts, and DIYers. It helps ensure tight, lasting fasteners on bikes, cars, machines, and home repairs.

Nanoxa Thread Lock Blue and Red, 50mlx2 Thread Locker Medium and High Strength, Threadlocker Removable & Permanent for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage Nanoxa Thread Lock Blue and Red, 50mlx2 Thread Locker Medium and High Strength, Threadlocker Removable & Permanent for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage

This product is perfect for anyone who needs to secure and protect their fasteners. It is great for cars, furniture, and industrial equipment.

Umadit Thread Locker, 50ml Blue Threadlocker (Medium Strength) & Red Threadlocker (High Strength) for Nuts, Bolts and Fasteners, Screw Glue to Effectively and Lastingly Avoid Loosening and Leakage Umadit Thread Locker, 50ml Blue Threadlocker (Medium Strength) & Red Threadlocker (High Strength) for Nuts, Bolts and Fasteners, Screw Glue to Effectively and Lastingly Avoid Loosening and Leakage

This thread locker set is perfect for mechanics and DIY repair fans who fix cars, bikes, and machines. It’s ideal for anyone needing to lock screws tight against vibration and leaks in metal parts.

Tank Bond Thread Locker, Removable, Medium Strength, 0.2 fl oz (6 mL), for Fasteners 1/4 Tank Bond Thread Locker, Removable, Medium Strength, 0.2 fl oz (6 mL), for Fasteners 1/4″ to 3/4″ Diameter, Set of 2

This is perfect for DIYers and homeowners working with fasteners 1/4″ to 3/4″ in diameter. Its removable gel gives medium-strength hold with no-drip performance and easy removal when needed.

BERIOVE Blue Thread Locker 243 : Threadlocker Metal Glue for Bolts, Nuts, Fasteners Medium Strength Screw - Prevent Loosening Corrosion 50g BERIOVE Blue Thread Locker 243 : Threadlocker Metal Glue for Bolts, Nuts, Fasteners Medium Strength Screw – Prevent Loosening Corrosion 50g

BERIOVE Blue Thread Locker is perfect for people who work with metal bolts and nuts that shake or vibrate. It helps DIYers, hobbyists, and pros keep screws tight up to M32 without extra parts.

Thread Lock Blue, 50ml Medium Strength Thread Locker, Waterproof Blue Threadlocker, Removable Lock Tight for Nuts and Bolts, Fasteners, Metals, Lock Tight to Prevent Loosening and Corrosion Thread Lock Blue, 50ml Medium Strength Thread Locker, Waterproof Blue Threadlocker, Removable Lock Tight for Nuts and Bolts, Fasteners, Metals, Lock Tight to Prevent Loosening and Corrosion

This tough thread locker is just right for mechanics, engineers, and industrial workers fixing machines that shake and jolt. It’s also great for homeowners doing easy DIY projects like putting together shelves or chairs.

Thread Lock Blue and Red, Threadlocker Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals, Against Losening and Leakage (50 mlx2) Thread Lock Blue and Red, Threadlocker Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals, Against Losening and Leakage (50 mlx2)

This thread locker is perfect for do-it-yourself fans, auto mechanics, and home fixers who want to keep nuts, bolts, and fasteners tight.
It works great for cars, machines, and furniture jobs where things shake and leak.

Detailed Reviews

Need the best medium strength thread locker for your projects? We’ve got you covered! Our guide highlights top choices for 6 to 19mm fasteners, based on expert tests and real user reviews.

1. Permatex 24200 Threadlocker Blue Medium Strength,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable with Hand Tools 6 ml

Permatex 24200 Threadlocker Blue Medium Strength,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable with Hand Tools 6 ml

Keep bolts tight. It locks parts in place. It resists vibration and corrosion.

Works on bolts from 1/4″ to 3/4″ (6mm to 20mm). Blue threadlocker prevents loosening and blocks leaks.

Medium strength for easy disassembly. Removable with hand tools for easy maintenance.

Pros Cons
  • Locks bolts and nuts securely in place.
  • Prevents loosening from shock and vibration.
  • Shields threads from corrosion and leaks.
  • Removes easily with hand tools.
  • Eliminates need for lock nuts and washers.
  • Not permanent: Easy to remove with hand tools.
  • Size limited: Only for bolts up to 3/4 inch.
  • Contact needed: Won’t cure without full metal touch.

Perfect For:

Permatex Threadlocker Blue is perfect for car mechanics and home fixers who want to keep bolts secure in cars or machines. It’s great for anyone doing jobs on engines, pumps, or driveshafts to stop nuts from loosening.

Ready to Purchase?

2. Loctite Threadlocker Blue 242 – Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion – 6 ml, 1 Pack

Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

Tired of loose nuts and bolts? Loctite Threadlocker Blue 242 is here to help. It stops vibration from causing problems. This product keeps things tight and secure.

This thread lock glue is easy to use. It sets quickly in just 10 minutes. You can remove it with hand tools.

It also prevents rust and corrosion. Keep your equipment in great shape with this product.

Pros Cons
  • Locks fasteners to stop vibrations from loosening them.
  • Prevents rust and corrosion on metal parts.
  • Removes easily with hand tools when needed.
  • Sets fast in just 10 minutes for quick use.
  • Works on nuts and bolts from 6mm to 19mm.
  • Medium strength may not hold in heavy use.
  • Takes 24 hours to fully cure properly.

Perfect For:

Tired of loose nuts and bolts? Loctite Threadlocker Blue 242 is perfect for anyone who wants to keep things secure. It works great on small engines, mowers, and power tools.

Ready to Purchase?

3. Vigorder Thread Lock Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage, Blue and Red

Vigorder Thread Lock Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage, Blue and Red

Tired of loose screws? The Vigorder Thread Lock is here to help. This 2-pack has both blue and red threadlockers. It’s perfect for many jobs.

The blue is for screws you might remove. Red is for a strong, permanent hold. Get yours today and keep things tight!

Pros Cons
  • Gets threads stronger to stop loosening.
  • Seals gaps and blocks fluid leaks.
  • Stays tough in water and heat.
  • Works on many metal parts simply.
  • Easy apply and fix in one day.
  • Hard to remove once fully cured
  • Messy to apply without spills
  • Strong smell can be too intense

Perfect For:

This kit is perfect for DIYers and pros who want a strong, reliable lock on threads. It’s ideal for automotive repair, home projects, and industrial work.

Ready to Purchase?

4. Red Purple and Blue Lock Tight Threadlocker 10ml-3Pack, Low, Medium and High Strength locktight Thread Locker for Metal, Fasteners, Nuts, Bolts to Against Losening and Seal

Red Purple and Blue Lock Tight Threadlocker 10ml-3Pack, Low, Medium and High Strength locktight Thread Locker for Metal, Fasteners, Nuts, Bolts to Against Losening and Seal

This threadlocker locks nuts and bolts in place. It prevents loosening in cars, bikes, and machines.

It applies easily with a nozzle for clean work. It resists heat and shakes to keep fasteners secure.

Choose low for quick jobs, medium for daily tasks, or high for tough work. The bottles are leak-proof to save product. Buy now to fix parts that last.

Pros Cons
  • Secure hold for various applications.
  • Easy and precise application with the nozzle.
  • Resistant to heat and vibration.
  • Offers three strengths for any project.
  • Leak-proof design prevents waste.
  • Strong chemical smell may irritate during use.
  • Not ideal for plastic or painted surfaces.
  • Requires curing time before full strength lock.

Perfect For:

This set is perfect for auto hobbyists, motorcyclists, RC enthusiasts, and DIYers. It helps ensure tight, lasting fasteners on bikes, cars, machines, and home repairs.

Ready to Purchase?

5. Nanoxa Thread Lock Blue and Red, 50mlx2 Thread Locker Medium and High Strength, Threadlocker Removable & Permanent for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage

Nanoxa Thread Lock Blue and Red, 50mlx2 Thread Locker Medium and High Strength, Threadlocker Removable & Permanent for Nuts, Bolts, Fasteners and Metals to Prevent Loosening and Leakage

Nanoxa Thread Lock comes in blue and red for all your fastening needs. This 2-pack offers medium-strength blue that you can remove and high-strength red for a permanent hold.

It locks nuts and bolts tight against vibration and shock. The formula fights rust, water, and heat for lasting protection. Use it on cars, bikes, furniture, and tools with ease.

Pros Cons
  • Strong lock prevents loosening and ensures safety.
  • Waterproof and rustproof for lasting protection.
  • Easy to apply with the precision tip.
  • Works on cars, bikes, furniture, and much more.
  • Smart bottle design keeps adhesive fresh.
  • Heat needed to remove red lock.
  • 24-hour cure for full strength.
  • Over-application can cause mess.

Perfect For:

This product is perfect for anyone who needs to secure and protect their fasteners. It is great for cars, furniture, and industrial equipment.

Ready to Purchase?

6. Umadit Thread Locker, 50ml Blue Threadlocker (Medium Strength) & Red Threadlocker (High Strength) for Nuts, Bolts and Fasteners, Screw Glue to Effectively and Lastingly Avoid Loosening and Leakage

Umadit Thread Locker, 50ml Blue Threadlocker (Medium Strength) & Red Threadlocker (High Strength) for Nuts, Bolts and Fasteners, Screw Glue to Effectively and Lastingly Avoid Loosening and Leakage

Need to keep your nuts and bolts tight? Umadit Thread Locker is your simple solution! This product prevents loosening and leaks effectively. It will help everything stay right where it should.

It includes both medium and high-strength options. Get lasting hold with this easy-to-use screw glue!

Pros Cons
  • Locks tight for long-lasting hold.
  • Stops loosening from vibrations and shocks.
  • Seals leaks with waterproof barrier.
  • Easy to apply on metal threads.
  • Strong bond resists heat and cold.
  • Not for plastic or self-drilling threads
  • Takes 24 hours to cure fully
  • Bottle not full for safe storage

Perfect For:

This thread locker set is perfect for mechanics and DIY repair fans who fix cars, bikes, and machines. It’s ideal for anyone needing to lock screws tight against vibration and leaks in metal parts.

Ready to Purchase?

7. Tank Bond Thread Locker, Removable, Medium Strength, 0.2 fl oz (6 mL), for Fasteners 1/4″ to 3/4″ Diameter, Set of 2

Tank Bond Thread Locker, Removable, Medium Strength, 0.2 fl oz (6 mL), for Fasteners 1/4

Tank Bond is a thread locker gel. It is removable for bolts 1/4″ to 3/4″ wide. The set has two tubes of 0.2 fl oz each.

No Drip formula lets you apply it on vertical surfaces without mess. It gives a medium-strength hold and easy removal when you need to take it apart.

Pros Cons
  • Stay tight against vibrations on bolts and nuts.
  • No drips during vertical gel application.
  • Remove easily without harming fasteners.
  • Apply precisely with controlled thumb dispensing.
  • Secure studs from loosening effortlessly.
  • Small tube size might need refills sooner.
  • Only for medium-strength needs.

Perfect For:

This is perfect for DIYers and homeowners working with fasteners 1/4″ to 3/4″ in diameter. Its removable gel gives medium-strength hold with no-drip performance and easy removal when needed.

Ready to Purchase?

8. BERIOVE Blue Thread Locker 243 : Threadlocker Metal Glue for Bolts, Nuts, Fasteners Medium Strength Screw – Prevent Loosening Corrosion 50g

BERIOVE Blue Thread Locker 243 : Threadlocker Metal Glue for Bolts, Nuts, Fasteners Medium Strength Screw - Prevent Loosening Corrosion 50g

Stop worrying about loose bolts. Get the BERIOVE Blue Thread Locker 243. It keeps your metal parts secure.

This thread locker stops rust and leaks. Now you don’t need extra washers. Just use it on your screws.

It’s easy to use and works great. Get yours today!

Pros Cons
  • Locks nuts and bolts tight against vibration and shocks.
  • Stops rust and corrosion in metal parts.
  • Works on bolts under M32 for many uses.
  • Dries fast in 10 to 15 minutes for quick fixes.
  • Reliable and cheap for strong help.
  • Only for bolts below M32.
  • Long cure time: 24 hours to full strength.
  • Requires clean, oil-free threads for best grip.

Perfect For:

BERIOVE Blue Thread Locker is perfect for people who work with metal bolts and nuts that shake or vibrate. It helps DIYers, hobbyists, and pros keep screws tight up to M32 without extra parts.

Ready to Purchase?

9. Thread Lock Blue, 50ml Medium Strength Thread Locker, Waterproof Blue Threadlocker, Removable Lock Tight for Nuts and Bolts, Fasteners, Metals, Lock Tight to Prevent Loosening and Corrosion

Thread Lock Blue, 50ml Medium Strength Thread Locker, Waterproof Blue Threadlocker, Removable Lock Tight for Nuts and Bolts, Fasteners, Metals, Lock Tight to Prevent Loosening and Corrosion

Thread Lock Blue (50ml, medium strength) locks screws firmly. It stops bolts from loosening.

Waterproof and tough. It resists salt and rust. It stays strong in hot and cold.

Removable without thread damage. Fits most metals and fasteners.

Pros Cons
  • Locks screws tightly against vibration and impact.
  • Stays waterproof and fights corrosion in tough spots.
  • Works from cold to hot, from zero to three hundred.
  • Fits bolts in guns, cars, and home fix-ups.
  • Removes easy with wrench, heats up, or breaks.
  • Cure time may slow assembly.
  • Residue risk if overapplied.
  • Stains tools if not wiped.

Perfect For:

This tough thread locker is just right for mechanics, engineers, and industrial workers fixing machines that shake and jolt. It’s also great for homeowners doing easy DIY projects like putting together shelves or chairs.

Ready to Purchase?

10. Thread Lock Blue and Red, Threadlocker Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals, Against Losening and Leakage (50 mlx2)

Thread Lock Blue and Red, Threadlocker Medium and High Strength, Thread Locker for Nuts, Bolts, Fasteners and Metals, Against Losening and Leakage (50 mlx2)

Blue and Red thread locker locks screws and nuts. It stops loosening from vibration. It seals and prevents leaks.

Easy to use: apply to the thread, tighten the nut, and cure for 20 minutes. Full cure is in 24 hours and it works on many jobs.

Pros Cons
  • Strong adhesion prevents loosening from vibration.
  • Seals threads for leak-free performance.
  • Stops rust and corrosion on metal threads.
  • Easy to apply and cures within hours.
  • Versatile for nuts, bolts, and valves.
  • Requires curing time before full strength kicks in.
  • Not removable easily once fully bonded.
  • Messy application that needs careful cleanup.

Perfect For:

This thread locker is perfect for do-it-yourself fans, auto mechanics, and home fixers who want to keep nuts, bolts, and fasteners tight.
It works great for cars, machines, and furniture jobs where things shake and leak.

Ready to Purchase?

Buying Guide

Medium strength thread lockers keep bolts and nuts secure against vibration. They work well for fasteners from 6 to 19mm.

Real users love how these thread lockers stop loose parts. One said, “I never worry about vibration loosening bolts anymore!” Another shared, “It saved me from a costly repair when my bike’s bolts stayed put.”

  • Strength Level: Choose medium strength for jobs where you need to remove fasteners later. It holds parts tight but lets you use hand tools for easy takedown.
  • Fastener Size Fit: Pick one for screws or bolts from 6mm to 19mm. This size range covers most nuts and bolts in cars, bikes, and machines.
  • Ease of Removal: Go for removable types with hand tools. These make repairs simple without damaging threads.
  • Vibration and Corrosion Resistance: Look for ones that stop loosening from shakes. They also block rust and leaks to keep parts safe.
  • Application Type: Select easy-to-use forms like gel or glue. No-drip kinds work on vertical surfaces without mess.
  • Pack Size and Included Strengths: Buy packs with blue and red for options. Larger 50ml bottles give more product for many tasks.
  • Curing Time: Check for fast setup in about 10 minutes. Full strength takes 24 hours for best hold.
  • Heat and Waterproofing: Find ones that handle hot and cold well. Waterproof types stop salt and water damage.
  • Brand Options: Try known names like Permatex or Loctite for trust. They offer strong protection based on user tests.
  • Price and Availability: Shop for fair value with good reviews. Buy from stores that carry 6ml to 50ml sizes for your needs.