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If you've ever chased a scope base screw that walked loose after a range session, this is the stuff that keeps it home. Loctite 248 is a medium-strength blue threadlocker built into a wax-like stick applicator, so instead of dripping liquid all over your work you just twist up the tube and dab it right onto the fastener. It's clean, it stores flat in a toolbox or bench drawer, and it works great on vertical or overhead threads where a liquid would run on you.
This is the classic medium-strength blue formula, which is the go-to strength for most gunsmithing work. A small band on base screws, action screws, or muzzle brake threads adds real insurance against recoil and vibration without locking things down for good. When it's time to strip a rifle down or re-zero, it breaks free with normal hand tools instead of a heat gun. That balance of holding power and serviceability is why blue has been the standard around gun benches for decades.
The 248 is anaerobic, meaning it cures once the coated threads are mated together and air is shut out. It's primerless and oil-tolerant, so it grabs on most as-received fasteners without you having to aggressively degrease everything first, though a quick cleanup with brake cleaner never hurts on grimy screws. It bonds on all metals, including tougher passive surfaces like stainless steel, aluminum, and plated hardware.
One thing worth knowing: threadlocker slightly reduces thread friction, so you'll often hit your torque spec at a lower wrench reading than you would on dry threads. Don't overtighten to compensate, especially on small 6-48 or 8-40 scope screws. Apply a thin band across two or three threads, torque to spec, and let it set. It's grippable in about ten minutes and reaches full cure in roughly 24 hours.
Yes, medium-strength blue is the standard recommendation for scope bases and action screws on most rifles. It holds up to recoil and vibration but still lets you back the screws out later with regular hand tools. Apply a thin band across two or three threads rather than drowning the screw.
The formula does the same medium-strength job, but the 248 comes as a wax-like semi-solid in a twist-up stick instead of a liquid. That means no drips, spills, or leaks, which is a real plus on vertical or overhead threads and for stashing in a toolbox or range bag. Both cure anaerobically once the threads are mated and torqued.
The 248 is primerless and oil-tolerant, so it cures on most as-received fasteners with light oil coatings without aggressive cleaning. That said, on heavily greased or gunked-up screws a quick wipe with brake cleaner and a blow-out with air will give you the most reliable bond. Let the parts dry before applying.
Threadlocker acts as a bit of a lubricant, so you'll usually reach your target torque spec at a lower wrench reading than on dry threads. Torque to your manufacturer's spec and resist the urge to crank down harder to compensate, especially on small 6-48 or 8-40 scope screws that strip easily.
| UPC | 079340370876 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 462476 |
| Color | Blue |
| Quantity | 1 |
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