LOCTITE Thread Treatments


Product Type Threadlockers Retainer Sealant
Product Name 222 242 271 290 640 PST® 592
Color Purple Blue Red Green Green White
Fastener Size #2 to 1/4" 1/4 to 3/4" 3/8 to 1" #2 to 1/2" N/A Up to 2"
Torque (in/lbs)
Break/Prevail
62/27 115/53 230/320 85/250 N/A N/A
Cure1 (Fixture/Full) 20 min/24 h 20 min/24 h 20 min/24 h 10 min/24 h 4 h/24 h 2 h/24 h
Fixture w/ Primer2 20 min 5 min 5 min 5 min N/A N/A
Temp. Range3 -65° to +300°F -65° to +300°F -65° to +300°F -65° to +300°F -65° to +400°F -65° to +300°F
Use Low strength;
applied BEFORE 
assy.
Removable strength;
applied BEFORE assy.
High strength;
applied BEFORE 
assy.
Penetrating formula;
applied AFTER assy.
High strength;
applied BEFORE assy.
Superior to Teflon tape or pipe dope; applied BEFORE assy.
Common
Applications
Set screws, calibration screws, adjustment screws, meters and gauges. Machine tools and presses, pumps and compressors, mounting bolts, gear boxes. Cylinder block and rocker arm studs, shock absorber mounts, ring gear bolts, frame bolts. Pre-assembled fasteners, instrumentation screws, electrical connectors, carburetors. Valve guides, woodruff keys, bearings and bushings,anchoring studs. Seals tapered metal pipe threads and fittings against leaks, vibration, and shock.

Notes:

1) Values cited are for 3/8"-16 steel "as received" nuts and bolts at 72°F.
2) Klean 'N PrimeTM cleans and conditions fasteners to increase breakaway torques.
3) Temperature range is for continuous service.