2D and 3D CAD models available for our entire inventory of fasteners!
The ND Patch coating process produces a completely dry product that is fused to the fastener and is ready to use right out of the box.  ND Patch performs immediatlely upon assembly with no curing time required.

How the ND Patch Works

When assembled with a mating part the resilient ND Patch is compressed.  The compressed engineered plastic (typically a Nylon Patch) provides locking action in the thread instead of at the bearing surface due to its vibration dampening characteristics.  In general, the resilience of the ND Patch holds the fastener in place without adhesives or thread distortion.  Due to its resilence, Patch can be repeatedly adjusted and reused.

ND Patch is normally positioned one to three threads back from the end of the fastener to assure ease of starting.  The normal coating length of the Patch is four to six threads.  Special Patch location and coating length can be specified for specfiic applications.

Features of the Nylon Locking Patch

  • Saves Time: Fasteners coated with ND Patch can be automatically fed through standard feeding devices.
  • Retains Full Strenght: ND Patch process involves no drilling or milling, so there is no loss of the fastener's strength or hardness and any troublesome burrs or chips.
  • Saves Money: Use of ND Patch eliminates the need for costly lock washers, cotter pins, or castellated nuts.  You get a close fit without the costs involved in obtaining close tolerances. Moreover, ND Patch is less expensive than applying bottled thread locking compounds at the point of assembly.
  • Resists Heat & Cold: ND Patch meets and exceeds IFI Specifications 124 & 524 as well as Military specification MIL-DTL-18240F, Type P, for temperatures from -70°F (-56°C) to +250°F (121°C).
  • Chemical Resistant: ND Patch will not dry, shrink, or lose resiliencey when exposed to commercial solvents, alcohol, gasoline, oil, caustic soada, jet fuel, etc.
  • Reusable: Fasteners coated with ND Patch can be reused repeatedly without damage to threads. ND Patch is particularly resistant to deformation, which makes it ideal for repeated use.
**Note: Miniumum Order Quantities Apply.
***ND Patch® is a regiestered trademark of ND Industries.