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DIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut
  • DIN 557 Square NutDIN 557 Square Nut

DIN 557 Square Nut

DIN 557 Square Nut is a German standard that specifies the dimensions and technical specifications for square nuts. Square nuts have a square shape and are used with bolts and screws to secure components in various mechanical and structural applications.

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Product Description

Wenzhou Jinghong Fasteners Co.,Ltd is a company that integrates development, production, and sales. It specializes in the production of GB (Chinese standard), DIN (German standard), ANSI (American standard), automotive standard fasteners, and non-standard fasteners.


Name DIN 557 Square Nut
Material Carbon steel/Stainless steel/brass
Standards GB,DIN, BSW, JIS, UNC, UNF, Non-standard, Customized Drawing
Thread Metric Coarse, Metric Fine, UNC, UNF, BSW, BSF.
Sizes M5-M20  Metc
Finish Carbon steel/ Nickeling/others/
Price 0.02usd/pcs-0.30usd/pcs
MOQ Stardard item(Usually little hundred-little thousand)/determined if non-standard



Product Feature

Square nuts can be made from different materials, including steel, stainless steel, brass, or other alloys, depending on the specific requirements of the application.DIN 557 provides specifications for the width across flats (the size of the square) and the height of the nut. The dimensions are specified in metric units.Square nuts have internal threads that correspond to the external threads of bolts or screws. The thread specifications, including pitch and diameter, are specified in the DIN standard.The standard may specify certain surface finishes, such as plain, zinc-plated, or other coatings, depending on the environmental conditions the nuts will be exposed to.Square nuts are commonly used in applications where a wrench or other tool can be easily engaged with the flat sides of the nut. They are often used in conjunction with square-headed bolts.


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