Serrated Flange Nuts - 316 Stainless Steel Nuts with a wide flange that acts as a washerSerrated for extra grip, making it less likely to loosenAlso known as a serrated flange nut, serrated hex flange nut, flange lock nut, or serrated hex flange lock nutWill scratch the surface it attaches toZinc plating offers an extra layer of corrosion resistance and a shiny finish Description Hex flange nuts are a type of nut that 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. Hex flange nuts can come in serrated and non-serrated versions. Serrated flange nuts create a locking action, allowing a serrated flange nut to be substituted for a lock nut. Sizing Specifications: #6: 0.312" Flats, 0.171" Thickness#8: 0.344" Flats, 0.203" Thickness#10: 0.375" Flats, 0.219" Thickness1/4": 0.438" Flats, 0.236" Thickness5/16": 0.500" Flats, 0.283" Thickness3/8": 0.562" Flats, 0.347" Thickness7/16": 0.678" REF, 0.386" REF1/2": 0.750" Flats, 0.458" Thickness5/8": 0.931" REF, 0.555" REF3/4": 1.091" REF, 0.657" REF Product Specification Material: SteelFinish: Zinc PlatedThread Direction: Right HandSizing: Nut Size - ThreadingStandards Met: REACH, RoHS Listing photo is generic for the fastener type listed in this listing and is not to scale. Please refer to the description for fastener details. If in doubt, please ask a question through chat or email. We will respond with the requested information quickly. Listing photo is generic for the fastener type listed in this listing and is not to scale. Please refer to the description for fastener details. If in doubt, please ask a question through chat or email. We will respond with the requested information quickly.