Is there a solvent or dremel attachement that will remove this stuff from bolt threads?

You don't need solvent or dremel. It will keep any screw or bolt from loosening, but you can get the bolt/screw out with a screwdriver and just brush off the Loctite. Very good stuff.

Do I apply this to my doorknob set screw before screwing it in or after? (ie, a drop on top?)

Before. You apply this to the screw threads before screwing in. Make sure you only apply a very little bit. More is not better.

how do I open the sealed tube? do I just poke a hole at the top?

I think it's best to use a thumbtack, safety pin, etc. to poke a hole into the flat tip. This will give you "droplet-sized control" in application.

can this be used in glasses? The screws that hold the lenses in place?

No, it is designed for larger screws. Use Loctite 222 for small screws.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 12 Pack

Product ID: 291286739

Details

Brand
LOCTITE
Item form
Gel
Material
Stainless
Special features
Vibration
Specific uses for product
Automotive DIY

🔧Locks 6-20mm fasteners

⏱️Sets in 10 minutes

🛡️Prevents rust & corrosion

COP 479950

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

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Description

🔩 Lock it down, loosen it up—control your fasteners like a pro!

VERSATILE FIT - Perfect for 6-20mm fasteners on metal, stainless steel, and plated surfaces.
FAST ACTING FORMULA - Sets quickly in just 10 minutes, so you can move on without the wait.
REMOVABLE WHEN NEEDED - Disassemble with hand tools—no permanent commitment, just reliable hold.
CORROSION LEAK DEFENSE - Protects threads from rust and leaks, extending the life of your equipment.
VIBRATION PROOF SECURITY - Keep your bolts tight and your projects flawless with medium-strength locking power.

Loctite Threadlocker Blue 242 is a medium-strength, removable thread-locking gel designed to secure 6-20mm metal fasteners against vibration loosening. It sets in 10 minutes and fully cures in 24 hours, preventing leaks, rust, and corrosion while allowing easy disassembly with hand tools. Ideal for automotive, construction, and DIY projects requiring reliable, reusable fastening.

Specifications

ASIN	B01EZTPX8A
Best Sellers Rank	#153,789 in Automotive ( See Top 100 in Automotive ) #442 in Automotive Fillers, Adhesives & Sealants
Brand	LOCTITE
Brand Name	LOCTITE
Color	Blue
Colour	Blue
Compatible Material	Metal
Container Type	Box
Customer Reviews	4.9 out of 5 stars 53 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	30079340242006
Included Components	Loctite - 209728 - 12pk
Item Form	Gel
Item Package Quantity	1
Item Type Name	Loctite - 209728 - 12pk
Item Weight	0.1 Pounds
Item form	Gel
Manufacturer	Loctite
Material	Stainless Steel
Material Type	Stainless Steel
Model	209728-12
Number of Pieces	1
Other Special Features of the Product	Vibration
Part Number	Loctite - 209728 - 12pk
Special features	Vibration
Specific Uses For Product	Automotive, Construction, DIY Projects
Specific uses for product	Automotive, Construction, DIY Projects
UPC	707934024200
Volume	6 Milliliters
Water Resistance Level	Not Water Resistant

Reviews

A**R

Good

31.07.2026

O**Z

Very happy with this order

We are purchasing regularly and very happy from the results Thank you!

5.07.2025

A**N

It's blue loctite. IF you're shopping for this, you know what you're looking for.

Each tube is packaged individually, I've got one with my gun stuff, one in the garage tool box, one in my leatherman sheath, and the rest in the packaging in a closet. AKA this is enough locktite for life for the average DIYer like me. Good price, OEM as far as I can tell. Just get the 12 pack and consider your locktite needs met till Valhalla.

21.07.2022

T**K

Great Product! Great Price!

25.03.2025

F**D

Effective

Used to keep furniture fasteners intact

23.09.2021

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COP 479950

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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