ALLSTAR PERFORMANCE ALL16021-10 Thin Nylon Insert Lock Nuts, 5/16-18 Thread, Steel, Zinc Oxide, 10-Pack

Secure fasteners with confidence using the ALLSTAR PERFORMANCE ALL16021-10 thin nylon insert lock nuts. Designed for applications requiring dependable resistance to loosening, these hex-head nuts feature a nylon insert that helps maintain clamping force under vibration and regular use. The 5/16-18 thread fits compatible 5/16-inch bolts and studs for a reliable connection in automotive, mechanical, fabrication, and general repair projects.
Constructed from steel and finished with zinc oxide, these locking nuts provide durable performance with added protection against everyday corrosion. The thin profile is useful where clearance is limited or where a standard-height nut may not be suitable. The hex-head design allows straightforward installation and removal with common hand tools, while the nylon insert creates consistent prevailing torque when properly installed.
This 10-pack provides a convenient quantity for repairs, component assembly, and shop or garage storage. Use the ALLSTAR PERFORMANCE ALL16021-10 wherever a compact, reusable-style locking nut is needed for a secure threaded assembly. Always select compatible hardware and follow the equipment manufacturer’s recommended tightening procedures. These nuts are intended for applications where nylon insert lock nuts are appropriate and should not be reused if the insert no longer provides adequate locking resistance.

Features:

• Brand: ALLSTAR PERFORMANCE

• Part Number: ALL16021-10

• Thread Size: 5/16-18

• Nut Style: Thin hex-head locking nut

• Locking Feature: Nylon insert helps resist loosening from vibration

• Material: Steel

• Finish: Zinc oxide for added corrosion resistance

• Pack Quantity: 10 nuts

• Application: Automotive, mechanical, fabrication, and general repair assemblies