Skip to content Skip to navigation menu
243™ Threadlocker, Medium Strength


243™ Threadlocker, Medium Strength
Item #100869837
  • 10 ml Container
  • Blue Color
243™ Threadlocker, Medium Strength
    Shipment Options
  • 10 ml Container
  • Blue Color


  • LOCTITE® 243 is a general purpose threadlocker that provides a medium strength bond. LOCTITE 243 works on all metals, including passive substrates such as stainless steel, aluminum and plated surfaces. It is proven to be tolerant of minor contamination due to industrial oils, e.g., motor oils, corrosion prevention oils and cutting fluid.


  • Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
  • Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces)
  • Proven to tolerate minor contamination by industrial oils, e.g. motor oils, corrosion prevention oils and cutting fluids
  • Permits disassembly with hand tools for servicing
  • NSF/ANSI 61 Certified
Container Size 10 ml
Cure Speed Fixture 10 min @ 25 °C
Typical Use Up to 3/4" Bolts With Light Oil Contamination
Prevail Torque 5 Nm, 40 in lb (M10 Steel Nuts/Bolts)
Temperature Range [Max] 300 °F
Temperature Range [Min] -65 °F
Oil Tolerant Yes
Cure Speed Full (Steel) 24 h @ 25 °C
Full Cure Time @ Temperature 24 h @ 72 °F
Curing Method Anaerobic
Prevailing Torque 62 lbf
Recommended Primer Primer N™, T™
Viscosity Speed 20 RPM 2150 mPa·s (cP)
Resistance (Chemical) Oil
You May Also Need Threadlocker to Primer N, Threadlocker to Primer T
Fastener Size Range 1/4 in to 3/4 in
Container Type Tube
Odor Characteristic
Strength Medium
Breakaway Torque ~ 26 Nm, 230 in lb (M10 Steel Nuts/Bolts)
Physical Form Liquid
Viscosity (cP) 2,250/12,000 Thixotropic
Fastener Type Metal
Color Blue
Weight 0.04 LB
EAN or UPC 79340438996
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison