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 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

Product ID: 1998117

Details

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

🔩Locks 6-19mm fasteners

⏱️Sets in 10 minutes

🛡️Prevents rust & corrosion

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€ 14.48

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In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Loctite
Item Form
Liquid
Material
ester

Description

🔧 Lock it down, loosen up later — the smart fix for every fastener!

VERSATILE FIT - Optimized for 6mm to 19mm nuts and bolts, ideal for everything from mowers to bicycles.
FAST ACTING FORMULA - Sets in just 10 minutes and fully cures in 24 hours, so you’re back to work without delay.
RUST LEAK DEFENSE - Protects threads from rust, corrosion, and leaks—no more costly lock nuts or washers needed.
VIBRATION PROOF SECURITY - Locks and seals metal fasteners to stop loosening from vibration—perfect for your power tools and motors.
MEDIUM STRENGTH REMOVABLE - Holds tight but allows easy disassembly with hand tools when maintenance calls.

Loctite Threadlocker Blue 242 is a medium-strength, fast-setting liquid designed to lock and seal metal fasteners sized 6-19mm. It prevents loosening caused by vibration, protects against rust and corrosion, and allows easy removal with hand tools. Ideal for small motors, mowers, and power equipment, it sets in 10 minutes and fully cures in 24 hours, making it a reliable, time-saving solution for professionals and DIYers alike.

Specifications

ASIN	B000I1RSNS
Best Sellers Rank	#34 in Automotive ( See Top 100 in Automotive ) #1 in Thread Lock Sealers
Brand	Loctite
Brand Name	Loctite
Color	Blue
Compatible Material	Metal
Container Type	Tube
Customer Reviews	4.8 out of 5 stars 42,298 Reviews
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 Grams
Manufacturer	Henkel Corporation
Material	Dimethylacrylate ester
Material Type	Dimethylacrylate ester
Model	Henkel / osi -tanch-it-
Number of Pieces	1
Other Special Features of the Product	Strong
Part Number	209728
Special Feature	Strong
Specific Uses For Product	Threadlocker
Tensile Strength	110 Pounds Per Inch
UPC	079340242005
Unit Count	6 Milliliters
Viscosity Level	Medium
Volume	6 Milliliters
Warranty Description	Warranty
Water Resistance Level	Water Resistant

Reviews

A**R

6.03.2026

L**S

16.04.2026

R**Z

11.04.2026

K**R

8.04.2026

S**N

6.02.2026

C**N

19.03.2026

C**R

15.04.2026

E**S

27.02.2026

A**Y

14.07.2025

L**S

19.08.2023

O**T

11.02.2017

1**N

15.12.2025

M**5

4.12.2025

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€ 14.48

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In stock

Sold byAmazon BelgiumDelivered 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 Belgium.

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