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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🔧 Lock it down, heat it up, and never look back!

TEMPERATURE TOUGH - Withstands up to 140°F ensuring durability in extreme automotive and industrial environments.
FAST TRACK YOUR FIX - Starts setting in just 10 minutes so you can keep your projects moving without delay.
HEAT ACTIVATED RELEASE - Engineered for heavy shock and vibration, yet easily removable with localized heat when needed.
UNBREAKABLE METAL BOND - Secures all metals including stainless steel & aluminum with superior oil tolerance for lasting strength.
VERSATILE INDUSTRIAL POWER - Perfect for air tool assemblies and fasteners up to 1 inch—trusted by pros for fleet and plant maintenance.

LOCTITE 263 Automotive Threadlocker Red is a professional-grade, high-strength adhesive gel designed for heavy-duty metal fastening. It bonds quickly within 10 minutes, fully cures in 24 hours, and tolerates oil and temperatures up to 140°F. Ideal for securing bolts and fasteners exposed to shock, vibration, and harsh chemicals, it offers reliable, heat-removable performance for automotive and industrial applications.

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Brand	Loctite
Specific Uses For Product	Fleet and plant maintenance.
Material	Acrylic,Aluminum,Stainless Steel
Item Form	Gel
Special Feature	Strong
Color	Red
Item Package Quantity	1
Package Information	Bottle
Item Volume	6 Milliliters
Viscosity	Low
Full Cure Time	24 Hours
Water Resistance Level	Not Water Resistant
UPC	079340011649
Number of Pieces	1
Global Trade Identification Number	00079340011649
Manufacturer	Loctite
Model	Loctite 2203451
Item Weight	0.01 ounces
Product Dimensions	5 x 2 x 1 inches
Item model number	2203451
Manufacturer Part Number	2203451
Special Features	Strong

LOCTITE 263 Automotive Threadlocker Red – High Strength Thread Lock, General Purpose Applications, Oil Tolerant, Fluorescent - 6 ml, 1 Pack

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