Description:

A Prevailing Torque lock nut is an all steel lock nut that is slightly pinched at the top.  This pinching exerts pressure against the bolt threads to help lock the nut in place.

Material:

• Steel
• Stainless Steel
• Brass

Grades:

• A
• B
• C

Markings: ~N/A~

Plating:

• Zinc
• No Plating (Plain Steel)

How to measure:

Internal thread pitch.

Application:

• Used when it is critical that the nut not back off on it’s own.  Most commonly used in areas with high temperature where a Nylon lock nut would not be suitable or where more holding power is required.

Abbreviation / Jargon:

• Top Lock
• Crimp Lock
• Stover Nut

Part Number Prefix:

• 0PT
• 1PT
• 2PT

Style / Types: