Hard-to-Find Fastener 014973456917 Flange Lock Nuts Grade 5 1/4-20 Piece-20

Diameter: 1/4 Diameter 2: 9/16 Thickness: 9/32 Material: Steel Finish: Zinc Driver Type: 7/16 Wrench Thread Size: 20 (Coarse) Hardness: Grade 5 Style: Nylon Insert Type: Flange Nut Box of 20. A flange nut has a wide flange at one end that acts as an integrated non-spinning washer. This serves to distribute the pressure of the nut over the part being secured reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface.