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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Loctite Heavy Duty Threadlocker, 0.2 oz, Blue 242, 12 Pack

Loctite Heavy Duty Threadlocker, 0.2 oz, Blue 242, 12 Pack

Product ID: 71918574

Details

Brand
Loctite
Item form
Gel
Material
Stainless
Special feature
Fast Drying
Specific uses for product
Automotive DIY

🔩Locks 6-20mm fasteners

⏱️Sets in 10 minutes

🛠️Removable with hand tools

฿12021

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Description

🔧 Lock it down, loosen up later — the pro’s choice for lasting thread security!

VERSATILE FIT - Ideal for 6-20 mm fasteners on stainless steel and plated surfaces
RUST LEAK DEFENSE - Protects threads from rust, corrosion, and leaks for long-lasting durability
RAPID SET RELIABLE HOLD - Medium-strength formula sets fast in 10 minutes and fully cures in 24 hours
SERVICE FRIENDLY REMOVAL - Designed for easy disassembly with standard hand tools when maintenance calls
VIBRATION PROOF SECURITY - Locks and seals threaded fasteners to prevent loosening under stress

Loctite Heavy Duty Threadlocker Blue 242 is a fast-drying, medium-strength gel designed to lock and seal threaded fasteners from 6 to 20 mm, preventing loosening caused by vibration. It protects against rust and leaks, cures fully in 24 hours, and is removable with hand tools, making it perfect for automotive, construction, and DIY projects requiring reliable yet serviceable fastening.

Specifications

ASIN	B01EZTPX8A
Best Sellers Rank	842,641 in Automotive ( See Top 100 in Automotive ) 1,773 in Fillers, Adhesives & Sealants
Brand	Loctite
Colour	Blue
Compatible Material	Stainless Steel
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	Threadlocker Tubes (12)
Item Form	Gel
Item Package Quantity	1
Item Type Name	Loctite Blue 242 Threadlocker 6-Milliliter Tubes, Case of 12 (209728-12)
Item Volume	6 Millilitres
Item Weight	45 g
Item form	Gel
Manufacturer	Henkel Corporation
Manufacturer Part Number	Loctite - 209728 - 12pk
Material	Stainless Steel
Model Number	209728-12
Number of Pieces	1
Other Special Features of the Product	Fast Drying
Special feature	Fast Drying
Specific Uses For Product	Automotive, Construction, DIY Projects
Specific uses for product	Automotive, Construction, DIY Projects
UPC	707934024200
Unit Count	6.0 millilitre
Water Resistance Level	Not Water Resistant

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฿12021

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered 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 Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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