Description

LOCTITE 290 is a liquid medium/high-strength threadlocker designed for the locking and sealing of threaded fasteners. Because of its low viscosity and capillary action, the product wicks between engaged threads and eliminates the need for disassembly prior to application. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. The product can also fill porosities in welds, castings and powdered metal parts.
  • Ideal for locking preassembled fasteners, e.g. instrumentation fasteners, electrical connectors and set screws
  • Works on metal only
  • Proven to be tolerant of minor contamination due to industrial oils, e.g. motor oils, corrosion prevention oils and cutting fluids
  • Requires heat for disassembly


Item number 290
Thread Size
(Maximum)
M12
Color Green
Viscosity
mPa.s (cP)
20 ~ 55
Torque Break
N.m/lb.in.
6 / 53
Torque Prevail
N.m/lb.in.
29 / 260
Temp. Range (℃) -55℃ ~ 150℃
Cure Speed
(Fixture / Full Cure)
20 min. /24 hrs.
Oil Tolerant
Primers N or T
Specific Gravity 1.08
Agency Approvals ✽美國軍規
(S-46163A)
Type III, Grade R
✽NSF/ANSI 61 認證


  1. With Loctite Primers, it can fill larger gaps.
  2. The screws fixed by the high-strength screw fixing agent can be removed by heating or by using a large torque.
  3. Before use, clean the next part with a rag or steel brush; if there is oil stain, be sure to remove the oil stain first.
  4. If it is a blind hole, it is more appropriate to apply glue to the hole.
  5. If the joint length is long, glue should be applied to the screw and the hole.

LOCTITE 290 Technical Data Sheet

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