Can fasteners still be disassembled after curing?

Yes, Loctite 243 provides medium strength. You can disassemble parts using standard hand tools for maintenance and repairs.

Which metals is this threadlocker suitable for?

It works on all active and passive metals, including steel, brass, copper, stainless steel, and aluminium, without requiring a primer.

Do threads need to be completely degreased before application?

Not strictly. Loctite 243 is oil-tolerant and cures reliably even with light contamination from cutting, engine, or anti-corrosion oils.

What is the operating temperature range of Loctite 243?

This threadlocker withstands operating temperatures from -55 °C to 180 °C.

What volume is contained in this bottle?

This bottle contains 24 ml of liquid threadlocker.

LOCTITE 243 medium-strength threadlocker for general use (24 ml bottle) - 1370559

Name: LOCTITE 243 medium-strength threadlocker for general use (24 ml bottle) - 1370559
Brand: LOCTITE
SKU: 11010474
Price: 23.6 EUR
Availability: PreOrder

Supplier number: LOCTITE 1370559 | EAN 5010266001296

Recommended Retail Price €35.68

23.60 tax incl.

€19.50 excl. VAT (incl. all environmental contributions)

On order: delivered from 09/10/2026

The minimum purchase order quantity for the product is 12.

Delivery by DHL

✆ Talk to a specialist

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 243

Practical benefits

Prevents vibration loosening: You secure nuts and bolts against loosening caused by severe mechanical shocks and continuous vibrations.
Works on all metals: You apply the formula directly to active and passive metal surfaces without requiring an activator.
Removable with hand tools: With its medium strength, you disassemble threaded fasteners easily using standard hand tools during maintenance.

In a nutshell

The right choise for

With Loctite 243 threadlocker, you reliably secure nuts, bolts, and studs against loosening caused by heavy shocks and continuous vibrations. The liquid blue formula bonds directly to all active and passive metals, such as steel, aluminium, and stainless steel, without requiring an activator or primer. It cures effectively even with light contamination from cutting, engine, or anti-corrosion oils while sealing threads against leaks and corrosion. Thanks to its medium strength, you can easily disassemble threaded fasteners using standard hand tools during routine maintenance on machinery, engines, and vehicles, keeping every assembly completely under control.

Product information FAQ

€23.60

tax incl.

Key features according to our expert

Net volume: 24 ml
P-statements: P273; P280; P333 + P313
Relative density: 1,08
ADR packing group: Not applicable
ADR class: Not applicable
UN number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
Strength (locking compound): Medium

Product description:

LOCTITE 243 - Threadlocker medium strength - Henkel
LOCTITE 243 is a general purpose threadlocker of medium bond strength.
This threadlocker secures and seal bolts, nuts and studs to prevent loosening due to vibration.
The product works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces.
It is proven to be tolerant of minor contamination due to industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids.

Precautionary statements

P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.

Hazard statements

H317: May cause an allergic skin reaction.
H412: Harmful to aquatic life with long lasting effects.

All Features

Net volume: 24 ml
P-statements: P273; P280; P333 + P313
Relative density: 1,08
Adr packing group: Not applicable
Adr class: Not applicable
Un number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
Strength (locking compound): Medium

Brand LOCTITE
11010474
EAN 5010266001296
Supplier number LOCTITE 1370559

Frequently asked questions about this product

Answered by specialists

Can fasteners still be disassembled after curing?: Yes, Loctite 243 provides medium strength. You can disassemble parts using standard hand tools for maintenance and repairs.
Which metals is this threadlocker suitable for?: It works on all active and passive metals, including steel, brass, copper, stainless steel, and aluminium, without requiring a primer.
Do threads need to be completely degreased before application?: Not strictly. Loctite 243 is oil-tolerant and cures reliably even with light contamination from cutting, engine, or anti-corrosion oils.
What is the operating temperature range of Loctite 243?: This threadlocker withstands operating temperatures from -55 °C to 180 °C.
What volume is contained in this bottle?: This bottle contains 24 ml of liquid threadlocker.