DIN 557 Nuts
DIN Standards are invented for a variety of components including industrial fasteners as DIN 557 Square Nuts. DIN 557 Nuts are manufactured from Acid-Resistant Stainless Steel Grade A2 or A4, Brass, Alloy Steel, Ordinary alloy steel, Aluminium or many other materials. DIN 557 Square Nuts are available in a wide range of sizes, shapes and materials.
Following are the specification of DIN 557 Nuts:


Characteristics:
- DIN 557 are Square Nuts in the form of a groove.
- One end of the DIN 557 Nut is flat, the other has a section in the form of a flat ring for making between the outer edge of which and the facets a chamfer is made.
- The Part has no sharp angles at the joints of the side of the nuts.
- A Steel Nut has a bevel and belongs to the class of product C.
Advantages:
- The Groove ensures the fixation of the nut in a fixed position, ex. Prevents the nut from swivelling in the detachable connection when the bolts, screws or studs are tightened to the appropriate thread size and pitch.
- Pre-Installed in a groove prepared in advance with a width slightly greater than the distance between the lateral faces of the nut.
- Then the counterpart is twisted into the same size, pitch and thread tolerance field.
- Spring stops are positioned so that they are engaged over the edge of the groove.
Application:
- Used for fastening parts and assemblies in conjunction with bolts, screws and other fastening elements in instrument making, production, mechanical engineering and other industries.
- Used as a conventional fastener.
- Provide the most durable and reliable fastening and connection.
Dimension specification of DIN 557 Nuts
Thread size d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |||
---|---|---|---|---|---|---|---|---|---|---|
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |||
dw | min | 6.7 | 8.7 | 11.5 | 14.5 | 15.5 | 16.5 | 17.2 | 22 | 27.7 |
e | 11.3 | 14.1 | 18.4 | 22.6 | 24 | 25.4 | 26.9 | 33.9 | 42.4 | |
m | Nominal dimension | 4 | 5 | 6.5 | 8 | 10 | 13 | 16 | ||
max | 4.6 | 5.6 | 7.25 | 8.75 | 10.75 | 13.9 | 16.9 | |||
min | 3.4 | 4.4 | 5.75 | 7.25 | 9.25 | 12.1 | 15.1 | |||
m’ | min | 2.4 | 3.1 | 4 | 5.1 | 6.4 | 8.5 | 10.6 | ||
s | max | 8 | 10 | 13 | 16 | 17 | 18 | 19 | 24 | 30 |
min | 7.64 | 9.64 | 12.57 | 15.57 | 16.57 | 17.57 | 18.48 | 23.16 | 29.16 |
We manufacture DIN 557 Nuts as per Custom Specification and export in Finland, Jersey, Spain, Switzerland, Ukraine, Austria and other European Countries. For more Information, Please Contact Us or Inquiry Now.