Dorman 810-046 Hex Lock Nut with Nylon Insert Grade UNC - 2 5/8-11

The Dorman 810-046 is a Grade 2 Hex Lock Nut with Nylon Insert featuring a 5/8-11 UNC (Unified National Coarse) thread size. Designed for general-purpose fastening applications in automotive, industrial, and mechanical assemblies, this prevailing torque nut provides reliable, vibration-resistant clamping force without the need for thread-locking compounds.

Key Features:

• Thread Size: 5/8-11 UNC (Unified National Coarse)
• Grade 2 construction for dependable general-purpose strength
• Nylon insert creates interference fit against bolt threads to resist loosening from vibration and dynamic loads
• Hex body design for easy installation with standard wrenches and sockets
• Manufactured using durable materials and corrosion tested to ensure required strength and longevity
• Meets dimensional standards for UNC hex lock nuts

The integrated nylon collar deforms around the mating bolt threads when tightened, creating a secure prevailing torque lock that maintains clamp load under vibration — without damaging the fastener. A reliable, cost-effective solution for repair and maintenance applications across automotive, powersports, marine, and general mechanical use.