Uflex now introduces you to their back-end hex nut with a nylon-filled collar. When the bolt hits the collar while being screwed in, the threads and nylon produce a tight fit that restricts mobility. It keeps loosening from occurring as a result of vibration. Nylon Insert Lock Nuts designed with a captive undersized nylon washer produce friction with the mating threads to prevent loosening. Locknuts differentiate from free-spinning hex nuts and employ a nylon-fitted substance to hold in place against torque and shock. Key Features: Nylock Nut, 18-8 Stainless, #10-24 NM (Full Height, Regular Hex Pattern) Back end hex nut with a nylon-filled collar 18-8 Stainless Steel Nylock nuts are a low-cost, long-lasting lock nut for corrosive situations. 18-8 Stainless steel has excellent corrosion resistance. Nylock Nuts are less expensive than most other lock nuts Reusable Specifications: Brand: Marine Fasteners SKU: 12-2808 UPC: 12-2808 Weight: 0.50 LBS Thread Size: 10-24 Hex: 3/8" Thickness: .229" - .249" Material Grade: 18-8 Width Across Flats: 3/8 in Nut Height: 1/4 in Material: Nylon and Stainless Steel Fastener Type: Lock Metal Type: Stainless Steel Qty _ Pkg: 100 Manufacturer Part Number (MPN): 010CNILS-1332 Replaces Product: 12-2808