NylokHD® Patch


  • Automotive
NylokHD® Patch

NylokHD® Patch is a high performance self-locking nylon retention element permanently bonded onto the threads of a nut via a special application technique. NylokHD® Patch will provide greater re-usability, and reduced torque scatter. When the patch is engaged, it creates a wedging action between the nut and mating part, compressing the nylon and promoting tight metal-to-metal contact opposite the patch. This metal-to-metal contact provides a positive resistance to vibration and loosening. Since nylon has great memory characteristics, this locking element is reusable. NylokHD® Patch can be applied to nuts of any style or plating. A wide range of nut sizes can be processed.


  • Allows the use of a shorter nut and bolt , providing lighter assemblies
  • Can be used with a mid-range of plating and metals, eliminating the need for cadmium
  • Usable on any grade or style of nut
  • Meets prevailing torque requirements of IFI 100/107, NASM 25027 and unique OEM requirements
  • Ideal for aerospace and commercial vehicle industry where weight is critical
  • Exceptional vibration resistance
  • Highly reusable
  • Re-adjustable after original installation
  • Wide variety of patch coverage's available
  • Environmentally friendly, non-toxic
  • Torque values can be customized to meet your requirements
  • Does not damage finish on mating parts
  • Resistant to most lubricants, fuels, hydraulic fluids and commercial solvents
  • No metal removal to reduce fastener strength or performance
Technical Data
  • Color — blue / orange (special colors available upon request)
  • Dry Wedge — immediate locking (no cure time)
  • Standard Temperature Range — -56°C (-70°F) to 121°C (250°F)
  • NytempHD® High Temperature Range — -56°C (-70°F) to 232°C (450°F)
  • Shelf-Life indefinite
Performance Results
  • Nylon Insert - Mean 12.5 (CPK 14.05) - 1st off: 7.4 - 5th off: 3.9 - Clamp Torque: 122.9
  • All Metal - Mean 25.6 (CPK 1.16) - 1st off: 12.5 - 5th off: 5.3 - Clamp Torque: 119.5
  • NylokHD® Patch - Mean 22.2 (CPK 1.74) - 1st off: 11 .1 - 5th off: 6.2 - Clamp Torque: 90.8
  • ASME B18.16M - 42 Max - 1st off: 6.0 Min - 5th off: 4.0 Min - Clamp Torque: 56,960 Nm
Manufacturing Specifications

  • IFI
    • IFI - 100/107

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