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

Product ID: 1998117

Details

Brand
Loctite
Item Form
Liquid
Material
ester
Special Feature
Strong
Specific Uses For Product
Threadlocker

🔒Medium-strength lock for 6-19mm fasteners

⏱️Sets in 10 minutes, cures in 24 hours

🛡️Prevents rust, corrosion & loosening

R307

Duties & taxes included

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Lock it down, loosen up later—thread security made smart and simple!

VERSATILE FIT - Optimized for 6-19mm fasteners, perfect for small motors, mowers, and power equipment.
RUST LEAK DEFENSE - Protects metal fasteners from rust and corrosion, extending equipment life and reliability.
SECURE EVERY THREAD - Locks nuts & bolts firmly to stop vibration-induced loosening—no more unexpected breakdowns.
FAST EFFICIENT CURE - Sets quickly in just 10 minutes so you can get back to work without delay.
REMOVABLE WHEN NEEDED - Medium strength formula allows easy disassembly with hand tools—service without stress.

Loctite Threadlocker Blue 242 is a medium-strength adhesive designed to lock and seal metal fasteners sized 6-19mm. It prevents loosening caused by vibration, protects against rust and corrosion, and sets quickly in 10 minutes with a full cure in 24 hours. Ideal for small motors, mowers, and power equipment, it offers reliable thread security while allowing easy removal with hand tools when needed.

Specifications

ASIN	B000I1RSNS
Best Sellers Rank	#28 in Automotive ( See Top 100 in Automotive ) #1 in Thread Lock Sealers
Brand Name	Loctite
Color	Blue
Compatible Material	Metal
Container Type	Tube
Customer Reviews	4.8 4.8 out of 5 stars (43,295)
Full Cure Time	24 hours
Global Trade Identification Number	00079340242005
Included Components	Loctite Heavy Duty Threadlocker, 0.2 oz, Blue 242, Single
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Blue 242
Item Weight	5 g
Manufacturer	Henkel Corporation
Material Type	Dimethylacrylate ester
Model	Henkel / osi -tanch-it-
Number of Pieces	1
Other Special Features of the Product	Strong
Part Number	209728
Specific Uses For Product	Threadlocker
Tensile Strength	110 pounds_per_inch
UPC	079340242005
Unit Count	1 Count
Viscosity Level	Medium
Volume	6 ml
Warranty Description	Warranty
Water Resistance Level	Water Resistant

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R307

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

2 months ago

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