Hexagonal Flange Nylon Lock Nut

The fastening and opening of bolts and nuts adopts non-standard design, and the matching
non-standard tools are used to solve the opening and fastening problems. In general, other
wrenches cannot be inserted. In the appearance design of nuts and bolts, non-standard slotting,
opening or pentagonal, heptagonal, nine-corner or custom-made corresponding groove tools
have played a very good anti-theft effect

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

Hexagon Flange Nylon Locking Nuts (also called flanged nyloc nuts) are a type of self-locking fastener designed to prevent loosening under vibration and dynamic loads. They combine a hexagonal head, an integrated flange, and a nylon insert to ensure a secure, vibration-resistant connection without requiring additional washers or adhesives.

Key Features & Design

1. Hexagonal Head (6-Sided)

   • Allows for easy tightening/loosening with standard wrenches or sockets.

   • Available in standard (ISO, DIN, ANSI) and metric sizes (e.g., M4, M6, M8).

2. Flange Base

   • A wide, circular flange acts as an integrated washer, distributing clamping force evenly.

   • Protects the mounting surface from damage and improves grip.

   • Eliminates the need for a separate flat washer.

3. Nylon Insert (Nyloc Feature)

   • A nylon-6,6 ring embedded at the top of the nut deforms when threaded onto a bolt.

   • Creates friction resistance, preventing loosening from vibration.

   • Typically colored blue (sometimes white or natural).

   • Hexagonal Flange Nylon Lock Nut

4. Material & Coatings

   • Nut Body: Carbon steel (Grade 8/10), stainless steel (A2/A4), or brass.

   • Surface Treatment: Zinc-plated (yellow/silver), black oxide, or galvanized for corrosion resistance.

5. Thread Types

   • Metric (coarse/fine) or imperial (UNC/UNF).

Common Applications

• Automotive (engine mounts, suspension, wheel hubs)

• Industrial machinery (conveyors, motors, pumps)

• Electronics & appliances (preventing screw loosening)

• Furniture & construction (where vibration is a concern)

Standards & Specifications

• DIN 6923 (Flange nuts with nylon insert)

• ISO 7040 (Prevailing torque type nylon insert nuts)

• Hexagonal Flange Nylon Lock Nut

• ASME B18.16.3M (Metric flange lock nuts)