Hillman 882041 Coarse Threads Stainless Steel Nylon Insert Lock Nut 5/16 in.-18

Product details:

Stainless Steel Nylon Insert Stop Nuts are ideal for securely fastening a bolt when connecting materials. The nylon ring inside the nut creates rotational resistance when displaced by a mating male threaded fastener, thus preventing loosening.

• HIGH-QUALITY HEX NUT DESIGN: Used for fastening to a bolt when mechanically joining materials
• CONSTRUCTED WITH A NYLON INSERT: The insert offers additional security to keep nut in place
• PART OF A COMPLETE FASTENING SOLUTION: Use with bolts or washers of the same thread size and finish
• 5/16"-18 USS COARSE THREAD: Matches bolts or rods of a 5/16"-18 coarse thread size