Lock Nuts

What is  Lock nuts ?

Lock nuts are a type of nut that are designed to prevent the fastener from coming loose due to vibration or other external forces. They typically have a locking mechanism that provides resistance to rotation, keeping the nut in place on the threaded bolt or screw.

There are different types of lock nuts, including:

1. Nylon insert lock nuts: These nuts have a nylon collar inside the nut that creates friction and resists loosening.

2. All-metal prevailing torque lock nuts: These nuts have distorted threads that create friction and resistance to loosening.

3. Center-lock nuts: These nuts have a center locking feature that creates a mechanical lock between the nut and the bolt or screw.

Lock nuts are commonly used in automotive, aerospace, and industrial applications, where vibration and shock can cause traditional nuts to loosen over time.

Specification of Lock Nuts

The specifications of lock nuts can vary depending on the application and the specific type of lock nut being used. However, here are some common specifications for different types of lock nuts:

1. Nylon insert lock nuts:

• Thread size: typically ranges from #4-40 to 1-1/2"

• Material: typically made of steel, stainless steel, or brass

• Temperature range: typically up to 250°F

1. All-metal prevailing torque lock nuts:

• Thread size: typically ranges from #2-56 to 2-1/2"

• Material: typically made of steel, stainless steel, or titanium

• Temperature range: typically up to 450°F

1. Center-lock nuts:

• Thread size: typically ranges from #8-32 to 2-1/2"

• Material: typically made of steel, stainless steel, or brass

• Temperature range: typically up to 250°F

Other specifications may include the number of threads per inch, the width across flats (the distance across opposite flat surfaces of the nut), and the height of the nut. It's important to choose the right lock nut for the specific application and to follow the manufacturer's specifications to ensure proper installation and performance.

Lock Nut Sizes
•  #00 - 10"

•  M1.2 - M250

Lock Nut Specifications
•  ASME B18.16.3M
•  DIN 980
•  DIN 6923
•  DIN 985
•  DIN 986
•  ISO 7042
•  ISO 19513
•  ISO 4161
•  ISO 10511
•  ISO 7040