Description:

The Hillman Group 4359 is a set of three 1/2-20 stainless steel stop nuts with nylon inserts designed to prevent loosening under vibration. These lock nuts provide a secure hold for critical fasteners in demanding environments.

• Size: 1/2-20
• Material: Stainless Steel
• Color: Silver
• Thread Class: Coarse
• Thread Style: Unified National
• Thread Pitch: 20 threads per inch
• Head Style: Hexagonal
• Shape: Hexagonal
• Finish: Plain
• Quantity: 3 Pack
• Key Feature: Captive undersized nylon washer creates friction with mating threads to resist vibration and other forces
• Material Benefits: Corrosion resistance, high temperature strength, scaling resistance, and low temperature toughness