What is Loctite 290 used for?

It is designed for locking and sealing pre-assembled metal threaded fasteners, as well as sealing porosities in welds and castings.

Do you need to disassemble fasteners before application?

No, its low viscosity allows the liquid to wick between engaged threads by capillary action without prior disassembly.

Which materials are compatible with this threadlocker?

Loctite 290 is engineered strictly for metal surfaces, including steel, stainless steel, and brass.

How do you disassemble parts secured with Loctite 290?

Due to its medium-to-high strength, disassembly requires standard hand tools after applying localized heat.

How does Loctite 290 cure?

It cures anaerobically in the absence of air between close-fitting metal surfaces.

LOCTITE 290 high-strength, low-viscosity threadlocker (250 ml bottle) - 233758

Name: LOCTITE 290 high-strength, low-viscosity threadlocker (250 ml bottle) - 233758
Brand: LOCTITE
SKU: 11010027
Price: 211.8 EUR
Availability: InStock

Supplier number: LOCTITE 233758 | EAN 5010266290737

Recommended Retail Price €268.47

211.80 tax incl.

€175.04 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered as of 05/10/2026
Free shipping
Delivery by DHL

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How does it work?

For a purchase value of €99 to €125 excl. VAT, receive FREE LOCTITE 55 thread sealing cord 50 m (IDH 528244) worth €9.99.
For a purchase value of more than €125 excl. VAT, receive FREE LOCTITE SF 7850 hand cleaner 400 ml (IDH 2098250) worth €13.21.
The free item is automatically added to your order. No registration is required.
The promotion is valid from 01.10.2026 to 31.10.2026.
Loctite Buy & Get deals are recognisable by the promotion label on the product page. Click the label to view all available deals.

Reliable locking with Loctite 290

Practical benefits

Fast post assembly penetration: Low viscosity allows the formula to wick between pre-assembled threads via capillary action without prior disassembly.
Strong vibration loosening resistance: You prevent threaded fasteners from backing out under heavy shock loads and constant operational vibrations.
Sealing weld and casting porosities: You seal microscopic pores and voids in welds or powdered metal components to prevent fluid leakage.

In a nutshell

The right choise for

With Loctite 290 threadlocker, you can reliably lock and seal metal threaded fasteners even after they are fully assembled. Thanks to its low viscosity, the liquid formula wicks directly between engaged threads via capillary action, eliminating the need for prior disassembly. This effectively prevents bolts, studs, and screws from backing out under heavy operational vibrations and mechanical shock. Additionally, it seals microscopic porosities in welds and metal castings against fluid leakage and moisture ingress. Supplied in a practical 250 ml bottle, it provides a dependable and efficient solution for demanding assembly and maintenance tasks.

Product information FAQ

€211.80

In stock - tax incl.

Key features according to our expert

Net volume: 250 ml
P-statements: P101; P102; P261; P337 + P313; P501
Relative density: 1,07
ADR packing group: Not applicable
ADR class: Not applicable
UN number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
H-statements: H319; H335
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
Locking strength: Medium

Product description:

LOCTITE 290 - Threadlocker medium/high strength - Henkel
LOCTITE 290 is a liquid medium/high-strength threadlocker designed for the locking and sealing ofthreaded fasteners.
Because of its low viscosity and capillary action, the product wicks between engaged threads and eliminates the need for disassembly prior to application.
The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration.
The product can also fill porosities in welds, castings and powdered metal parts.

Precautionary statements

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H319: Causes serious eye irritation.
H335: May cause respiratory irritation.

All Features

Net volume: 250 ml
P-statements: P101; P102; P261; P337 + P313; P501
Relative density: 1,07
Adr packing group: Not applicable
Adr class: Not applicable
Un number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
H-statements: H319; H335
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
Locking strength: Medium

Brand LOCTITE
11010027
EAN 5010266290737
Supplier number LOCTITE 233758

Frequently asked questions about this product

Answered by specialists

What is Loctite 290 used for?: It is designed for locking and sealing pre-assembled metal threaded fasteners, as well as sealing porosities in welds and castings.
Do you need to disassemble fasteners before application?: No, its low viscosity allows the liquid to wick between engaged threads by capillary action without prior disassembly.
Which materials are compatible with this threadlocker?: Loctite 290 is engineered strictly for metal surfaces, including steel, stainless steel, and brass.
How do you disassemble parts secured with Loctite 290?: Due to its medium-to-high strength, disassembly requires standard hand tools after applying localized heat.
How does Loctite 290 cure?: It cures anaerobically in the absence of air between close-fitting metal surfaces.