Why is this labeled as a primerless thread locker? Literally the first step on the package instructions is to prep your surface with a primer.

Loctite 263 is actually primerless on most metals. This is an automotive aftermarket package, and there is a Klean 'n' Primer product sold that is usually suggested for all anaerobic products. You can just clean the parts with alcohol or acetone. No primer is required. If you need further assistance, please contact the LOCTITE Technical team at 1-800-LOCTITE

Does Loctite 263 have a limited shelf life?

Yes, Loctite 263 threadlocker has a limited shelf life of 730 days from the date of manufacture. This means that it is important to check the expiration date on the product before using it. If the product is expired, it may not perform as expected.

Approximately how many 1/4" studs can be set with the 6m tube?

For small threads, we typically recommend applying 1 big drop (or 2 drops small/medium drop max) to the male threads at the engaging area, vs the female thread in the hole in a blind. The idea is to ensure a good coverage in the engaging/mating area of the nut and bolt. For 1/4" bolt, I estimate 200 bolts with a 6ml tube, of a manual application from the bottle.

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Loctite 2203451 Threadlocker 263 Surface Insensitive-High Strength Tube, Red, 6-ml

Product ID: 299024249

Details

Brand
Loctite
Item Form
Liquid
Material
Silicone
Special Feature
High Strength

🔥Heat-removable design

🔩High-strength metal adhesion

⏱️Quick 10-min initial set

€ 37.43

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In stock

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Description

🔧 Lock it down with Loctite Red 263 — the pro’s choice for unstoppable strength!

FAST TRACK YOUR FIXES - Starts setting in just 10 minutes so you can keep your projects moving.
HEAT ACTIVATED REMOVAL - Secure yet easily removable with localized heat and simple hand tools.
UNMATCHED METAL BONDING - Works flawlessly on stainless steel, aluminum & plated surfaces—even oily ones.
BUILT FOR EXTREME CONDITIONS - Withstands heavy shock, vibration, chemicals & temps up to 140°F.
VERSATILE INDUSTRIAL STRENGTH - Ideal for air tool assemblies, cylinder blocks, ring gears & transmission bolts up to 1 inch.

Loctite 2203451 Threadlocker 263 is a high-strength, oil-tolerant adhesive designed for heavy-duty metal fastening. It bonds reliably to all metals including passive substrates, sets quickly within 10 minutes, and fully cures in 24 hours. Engineered for extreme shock, vibration, and chemical exposure, it withstands temperatures up to 140°F and can be removed with heat when needed. Perfect for professional-grade automotive and industrial applications.

Specifications

ASIN	B07FMP2TBK
Best Sellers Rank	#220,319 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,727 in Universal Adhesives
Brand	Loctite
Brand Name	Loctite
Colour	Red
Compatible Material	Metal
Container Type	Tube
Country of Publication	USA
Customer Reviews	4.8 out of 5 stars 634 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00079340011649
Included Components	(1) Threadlocker 263 Surface Insensitive-High Strength Tube, Red, 6-ml
Item Form	Liquid
Item Package Quantity	1
Item Weight	0.01 Ounces
Manufacturer	Loctite
Manufacturer Part Number	2203451
Material	Silicone
Material Type	Silicone
Model	2203451
Number of Packs	1
Number of Pieces	1
Other Special Features of the Product	High Strength, Surface Insensitive
Special Feature	High Strength, Surface Insensitive
Specific Uses For Product	Fleet and plant maintenance.
UPC	079340011649
Volume	6 Millilitres
Water Resistance Level	Not Water Resistant

Reviews

N**A

Luck nut

Greatest nut locker

25.10.2026

L**S

Great product. It works.

This product helped fix my car. Its still going strong.

15.05.2026

G**O

La mejor marca para aplicaciones críticas, total seguridad si se instala bien

Compré este fijador específicamente para la instalación de unos separadores de rueda en mi Jeep, y la verdad es que es la mejor marca del mercado para este tipo de trabajos. Al tratarse de componentes que exigen la máxima seguridad, este producto te da toda la confianza del mundo. Hasta el momento no he tenido ningún tipo de detalle y los tornillos se mantienen perfectamente firmes. Eso sí, recomiendo ampliamente seguir las instrucciones de manera muy cuidadosa y adecuada para asegurar el correcto funcionamiento del producto. Nuevamente, es un artículo para el cual se debe tener el conocimiento técnico básico sobre su aplicación y tiempos de curado; no es para tomarse a la ligera. Totalmente recomendado si buscas calidad profesional.

12.07.2026

T**N

Great

21.05.2026

M**U

Cumple con sus especificaciones. Loctite es una garantía.

La marca es una garantía. Lo recomiendo.

18.09.2025

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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€ 37.43

Duties & taxes included

In stock

Sold byAmazon GERMANYDelivered 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 GERMANY.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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