Type Product ID Strength Recommended Uses Temp. Range Cure Speed
Loctite® Red Threadlocker  271 High strength for fasteners up to 1" (25 mm)
diameter Exhaust Manifold Bolts, Flywheel Bolts, Torque Converter Bolts -65°F
- 300°F
(-54°C - 149°C) Fixture 10 min.
—
Full Cure 24 hrs
Loctite® Blue Threadlocker 242 Medium strength. Removable grade up to 1⁄4"
to 3⁄4" (6 mm to 19 mm) bolts Valve cover bolts, water pump
bolts, oil pan bolts, drive shaft bolts, rocker arm adjustment nuts,
carburetor studs. -65°F - 300°F
(-54°C - 149°C) Fixture 5 min.
—
Full Cure 24 hrs
Loctite® Green Threadlocker 290 Wicking grade for pre-assembled parts Bolts
on alternators, air conditioning belts and distributor
clamps, carburetor adjustment screws, and hairline cracks. -65°F - 300°F
(-54°C - 149°C) Fixture 20 min.
—
Full Cure 24 hrs.
Loctite® Purple Threadlocker 222 Low strength up to 1⁄4" (6 mm) screws
Carburetors,
relay locks, headlamps, throttle body assembly, choke assembly
and fuel injection set screws, body panel mounting fasteners. -65°F - 300°F
(-54°C - 149°C) Fixture 10 min.
—
Full Cure 24 hrs
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Brent Weide
Portland, Oregon