Hexagonal 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

Hexagonal Nylon Lock Nuts (commonly called Nyloc nuts) are a type of self-locking nut designed to resist loosening caused by vibration, shock, and dynamic loads. They feature a hexagonal head for tool engagement and a nylon insert that creates friction against the bolt threads, ensuring a secure, long-lasting connection.

Key Features & Design

1. Hexagonal Head (6-Sided)

   • Standard wrench/socket compatibility (e.g., ISO, DIN, ANSI standards).

   • Available in metric (M3, M5, M6, etc.) and imperial (UNC/UNF) thread sizes.

2. Nylon Insert (Locking Mechanism)

   • A nylon-6,6 ring (usually blue or white) is crimped into the top of the nut.

   • When threaded onto a bolt, the nylon deforms, creating frictional resistance to prevent loosening.

   • Effective up to ~120°C (250°F); degrades at higher temperatures.

3. Material & Finishes

   • Nut Body: Carbon steel (Grade 5/8), stainless steel (A2/A4), or brass.

   • Coatings: Zinc-plated (corrosion-resistant), black oxide, or plain.

4. Thread Types

   • Coarse (standard) or fine threads, depending on application needs.

   • Hexagonal nylon lock nut

Common Applications

• Automotive (engine components, suspension, brackets)

• Industrial equipment (pumps, motors, conveyors)

• Electronics & appliances (PCBs, housings)

• Furniture & DIY projects (where vibration is a concern)

Standards & Specifications

• DIN 985 (Metric nylon insert lock nuts)

• ISO 7040 (Prevailing torque type, non-metallic insert)

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

Installation Tips

• Do not over-tighten – Excessive torque can damage the nylon insert.

• Avoid lubricants on threads – Reduces locking effectiveness.

• Check for wear – Replace if the nylon appears cracked or flattened.