Self-locking screw
Nylok

The NYLOK BLUE PATCH™ self-locking element is permanently spray bonded onto the threads of a fastener. When mating threads are engaged, the tough, resilient blue nylon patch element is compressed and a counterforce is created to establish a much stronger metal-to-metal contact and positive resistance to vibration and loosening.

A NYLOK BLUE PATCH (known as TUF-LOK® in Europe) self-locking patch can be applied to your own fasteners, or ready-to-install self-locking fasteners can be supplied to meet your specifications. Screws as small as #00-90 (M1.0) can be processed and NYLOK BLUE PATCH self-locking elements can be applied with equal effectiveness to large diameter fasteners.

Advantages

* Exceptional vibration resistance
* Reusable
* Adjustable
* Seals
* Applicable to any head configuration
* 180° (std) or 360° (optional) radial coverage
* Wide variety of patch locations and coverage
* Easy to use in assembly
* Non-toxic, assembler friendly
* Environmentally friendly
* Torque values can be customized to meet your requirements
* Applicable to a variety of materials and finishes
* Compatible with different mating part materials
* Resistant to lubricants, fuel, hydraulic fluids and most commercial solvents
* Durable
* Cost effective
* No metal removal to reduce fastener strength or performance
* Temperature range: -70°F to 250°F (-56°C to 121°C)