Nuts with a four-sided, square shape are known as Square Nuts. They are frequently used to hold nuts
and screws in position in construction and woodworking applications. Square bolts, which are made to
tightly fit into the square hole of the nut, are frequently used in conjunction with square nuts.
The ability of square nuts to resist rotation is one of their main advantages. Due to their square shape,
they give more surface region to the fastener or screw to hold onto, which makes them less inclined to
slacken or turn over the long haul. This goes with them an ideal decision for applications where vibration
or development is a worry.
Steel, stainless steel, brass, and nylon are just a few of the materials and sizes that square nuts can be
found in. Common uses for square nuts in building and woodworking include framing, decking, and
furniture assembly. Additionally, they are utilised in equipment and automotive applications where
vibration resistance is crucial.

Square Nuts DIN 557
The thread pitch and nominal size of a square nuts determine their classification. The nominal sizes
listed in the standard are M5 to M64, which correspond to bolt or screw diameters between 5 and 64
millimeters. The string pitch for square nuts is equivalent to the comparing fastener or screw.
The materials that can be used to make square nuts are likewise included in the DIN 557 standard.
Square nuts DIN 557 must be made primarily of steel, stainless steel, and brass according to the standard;
however, other materials may be used as long as they adhere to the specifications.
The mechanical properties of square nuts and the methods for testing them are outlined in the DIN 557
standard. The requirements for proof load, tensile strength, and hardness, as well as the procedures for
testing, are outlined in the standard.

Square Nuts DIN 562
The nominal size and thread pitch of Square thin nuts determine their classification. The nominal sizes
listed in the standard are M1.6 to M48, which correspond to bolt or screw diameters between 1.6 and
48 millimeters. Square thin nuts have the same thread pitch as the corresponding bolt or screw.

The materials that can be used to make square thin nuts are likewise included in the DIN 562 standard.
Although other materials may also be used as long as they adhere to the requirements, the standard
specifies steel, stainless steel, and brass as the main materials for square thin nuts.