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 like a pro — no loosening, no leaks, just pure performance.

HIGH TEMP RESILIENCE - Performs reliably in extreme temperatures from -65°F to 360°F, perfect for heavy-duty automotive use.
OIL TOLERANT FORMULA - Maintains strength even on surfaces with cutting oils, lubricants, and anti-corrosion fluids.
UNBREAKABLE BONDING POWER - Locks and seals threaded fasteners permanently, resisting shock and vibration.
UNIVERSAL METAL COMPATIBILITY - Works flawlessly on active metals like brass and copper, plus stainless steel and plated surfaces.
EFFORTLESS APPLICATION DISASSEMBLY - Primerless, cures anaerobically, and requires only localized heating for easy removal.

Loctite 263 Threadlocker is a high-strength, red acrylic adhesive designed for permanent locking and sealing of threaded fasteners up to 1 inch. It cures anaerobically on a wide range of metals, tolerates oil contamination, and withstands temperatures from -65°F to 360°F, making it ideal for demanding automotive and industrial applications.

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Product Dimensions	12.7 x 5.08 x 2.54 cm; 0.28 g
Item model number	2203451
Number of Puzzle Pieces	1
Assembly Required	No
Batteries Required?	No
Batteries Included?	No
Material Type(s)	Acrylic
Color	red
Release date	13 July 2018
ASIN	B07FMP2TBK

Loctite 263 Threadlocker for Automotive: High-Strength, Oil Tolerant, High-Temp, Fluorescent, Anaerobic | Red, 6mL Tube (PN: 2203451)

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