LOCTITE® 201™ is a dry-to-the-touch, pre-applied film for threaded fasteners. It remains inert on the fastener until assembly of the threads releases a quick curing resin. The resin fills all the voids in the threads and cures to securely lock and seal the assembly. LOCTITE® Dri-Loc® products prevent loosening through vibration to provide locking and sealing of threaded assemblies. They are widely used in automotive, machinery, hardware, and electrical industry.

Product Advantages

  • Micro-encapsulated thread locking and sealing product
  • No additional locking device needed.
  • Coating range can be adjusted to meet specific applications
  • Complies with or exceeds DIN-267 PART 27, IFI-125, and IFI-525.
  • Increases productivity at the assembly line.
  • Ready for assembly
  • Dry-to-the-touch, tack free finish
  • Non-toxic, assembler friendly
  • Environment-friendly
  • Not recommended for use on copper or brass surfaces
  • Applicable to high-temperature environment (up to 204℃)。

Technical Data

Property Description
Color Yellow
Application Thread locking/Sealing for high temperature application High strength
Breakaway Torque* (kgf-cm) >102
Prevailing-off Torque* (kgf-cm) <561
Operation Temperature (℃) -54℃~200℃
Curing Time Start Hardening 10 min.
Fully Cured 72 hrs
Lubricity Low/Medium
Shelf Life 4 Years at room temperature 8~28℃ and max. 65%RH
Remark Do not touch any oil during the product assembly process
Remark: *on 3/8”(M10) phosphate based bolt

Industrial Specifications and Standards

Company and Institution Specification Company and Institution Specification
Industrial Fasteners Institute(IFI) IFI-125
Yamaha YGK-8-616-S2-U-D
Deutsches Institut für Normung (DIN) DIN 267 Part 27 D-Chrysler MS-CC76A
General Motors GM-6194M Suzuki SES N 3231B
Ford Motor ES-20007-S100


LOCTITE® is the registered trademark of HENKEL Corporation. Dri-Loc® Vibra-Seal® Dri-Seal® are the registered trademark of HENKEL Corporation.