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DIN 557/562 square nut is a steel fastening device screwed on a steel bolt-on on all four sides. The square nut uses a special wrench to tighten and loosen it from the bolt before the hex nut. The DIN 557 square nut/562 square nut can be used for both small fastener applications and very large fastener applications as the success of the design has proven to be worthy of countless applications. One reason the DIN 557/din 562 square nut is so successful is that it is easy to remove and install because the square design has proven to be durable.

DIN 557/562 Square Nuts Specifications
Square Nut DIN 557
DIN 557 - 1994 Square Nuts-Product Grade C
Equivalent norm: UNI 5597

Square Nuts DIN 562
DIN 562 - 2013 Square Thin Nuts, Product Grade B

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