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** Minimum order value: $100


  • Hex Flange Nuts

    • As part of our high-quality line of flange nut fasteners, National Bolt & Nut offers a variety of hex flange nuts that meet IFI-145 dimensions. Our hex flange nuts are equipped with a wider flange that distributes pressure equally over the components being fastened, assuring a more secure hold.
    • Our hex flange nuts are equipped with either course or fine threads. Nylon inserts and nuts with patches are also available, which help prevent our hex flange nuts from loosening during vibration.
    • Other materials and finishes available. For further information, call or send an information request.

  • Metric Hex Flange Nuts

    • Dimensions per DIN 6923
    • Metric thread also available as well as other materials and finishes. For further information, call or send an information request.

  • Serrated Flange Lock Nuts

    • National Bolt & Nut possesses a premium line of high-quality serrated flange nuts. The serrated flange of these fasteners offer superior gripping capabilities. And, along with our other premium flange nut products, our serrated flange nuts possess an enlarged circular base that more evenly distributes pressure over the part being secured. This circular base allows our serrated flange nuts to maintain a tighter hold.
    • Because of the tight grip offered by the hardened locking serrations of our serrated flange nuts, no washer is necessary during application. Nylon inserts and nuts with patches are also available, which help prevent our hex flange nuts from loosening during vibration.
    • Our serrated flange nuts meet dimensions per 145 with the addition of serrated teeth under flange.
    • Other materials and finishes available. For further information, call or send an information request.

  • Metric Serrated Flange Nuts

    • National Bolt & Nut's premium line of metric serrated flange nuts meet DIN 6923 dimensions with the addition of serrated teeth under flange. These metric serrated flange nuts possess a serrated flange and an enlarged circular base that distributes pressure evenly over the part being secured. Both of these features provide our metric serrated flange nuts with superior gripping capabilities.
    • Because of the tight grip offered by the hardened locking serrations of our serrated flange nuts, no washer is necessary during application. Nylon inserts and nuts with patches are also available, which help prevent our hex flange nuts from loosening during vibration.
    • Other materials and finishes available. For further information, call or send an information request.