Nylon Insert, Hillman, Flange Nut, Hex, 1/2 in x 13

Hillman 34380 Flange Nut, Nylon Insert, Coarse Thread, 1/2-13 Thread, Zinc Nylon Insert Flange Lock Nuts have a flat bearing surface below the nut and are designed to carry the load distribution over a greater surface area. Parts feature a nylon insert to help prevent loosening associated with vibration.

• Nylon insert for added security to keep nut in place
• Used for fastening to a bolt when mechanically joining materials together
• Use with bolt and washer of the same material, finish and grade
• High corrosion resistance