LOCTITE 243 Medium Strength Oil Tolerant Threadlocker

LOCTITE Brand: LOCTITE

LOCTITE 243 is a medium strength general-purpose thread locker which secures and seal bolts, nuts and studs to prevent them from loosening due to vibration. LOCTITE 243 works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces. It is proven to be tolerant of minor contamination like industrial oils, engine oils, corrosion-prevention oils and cutting fluids.

  • Cures in the absence of air to provide a tough retaining medium for threaded parts
  • Tolerates slight contaminations of industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluid
  • Prevents loosening of vibrating parts, e.g. pumps, gearboxes and presses
  • Permits disassembly for servicing using normal hand tools
  • Maximum thread size M36
  • Breakaway torque on M10 bolt 26 Nm
  • Fixture time for steel 10 minutes
  • Fixture time for brass 5 minutes
  • Fixture time for stainless steel 10 minutes
  • Service temperature range: -55 to +180°C
  • P1 NSF Reg. No: 123000
  • Supplied in bottles of 10ml, 50ml or 250ml
  • LOCTITE type 243
Description Image Product Buy Pricing (Ex VAT) Volume Type Strength Dispensing Method Agency approvals / certificates / specifications Application method Application temperature Applications Breakaway torque, M10 Steel Nuts/Bolts Colour Cure type Fixture time Key characteristics Physical form Prevail torque, M10 Steel Nuts/Bolts Recommended for use with Specific gravity, @ 23.0 °C Technology Viscosity, Brookfield - RVT, @ 25.0 °C Viscosity, cone & plate, @ 25.0 °C
LOCTITE 1918246 243 Medium Strength Oil Tolerant Threadlocker 10ml
LOCTITE 1918246 243 Medium Strength Oil Tolerant Threadlocker 10ml
Standard range
Order code: 87-0383
MPN: 1918246

42 in stock, despatched same dayAdditional quantity lead time 7 days
1+ £9.78
Price per unit Ex VAT 		10ml Threadlocker Medium Bottle NSF P1 Reg. No 123000 Dispense gun, Dispense system, Manual -55.0 °C - 180.0 °C ( -65.0 °F - 360.0 °F ) Threadlocking ~ 26.0 N·m ( 230.0 in./lb. ) Blue Anaerobic cure 10.0 min Thixotropic, General purpose, Strength: medium strength, Primerless, Oil tolerant, Fluorescent, Disassembly: removable Liquid 5.0 N·m ( 40.0 in./lb. ) Metal, Metal: passive metal 1.08 Acrylic 2000.0 350.0
LOCTITE 1335884 243 Medium Strength Oil Tolerant Threadlocker 50ml
LOCTITE 1335884 243 Medium Strength Oil Tolerant Threadlocker 50ml
Standard range
Order code: 87-0385
MPN: 1335884

16 in stock, despatched same dayAdditional quantity lead time 7 days
1+ £41.28
Price per unit Ex VAT 		50ml Threadlocker Medium Bottle NSF P1 Reg. No 123000 Dispense gun, Dispense system, Manual -55.0 °C - 180.0 °C ( -65.0 °F - 360.0 °F ) Threadlocking ~ 26.0 N·m ( 230.0 in./lb. ) Blue Anaerobic cure 10.0 min Thixotropic, General purpose, Strength: medium strength, Primerless, Oil tolerant, Fluorescent, Disassembly: removable Liquid 5.0 N·m ( 40.0 in./lb. ) Metal, Metal: passive metal 1.08 Acrylic 2000.0 350.0
LOCTITE 1335868 243 Medium Strength Oil Tolerant Threadlocker 250ml
LOCTITE 1335868 243 Medium Strength Oil Tolerant Threadlocker 250ml
Standard range
Order code: 87-7007
MPN: 1335868

Available to back orderBack-order availability date - 30/03/2026
1+ £172.92
Price per unit Ex VAT 		250ml Threadlocker Medium Bottle NSF P1 Reg. No 123000 Dispense gun, Dispense system, Manual -55.0 °C - 180.0 °C ( -65.0 °F - 360.0 °F ) Threadlocking ~ 26.0 N·m ( 230.0 in./lb. ) Blue Anaerobic cure 10.0 min Thixotropic, General purpose, Strength: medium strength, Primerless, Oil tolerant, Fluorescent, Disassembly: removable Liquid 5.0 N·m ( 40.0 in./lb. ) Metal, Metal: passive metal 1.08 Acrylic 2000.0 350.0
Order codeVolume
87-038310ml
87-038550ml
87-7007250ml


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