DIN 562 Low Square Nut, Steel

Low square nuts are produced according to the DIN 562 standard; this flat fastener is designed for creating threaded connections protected against unscrewing. Due to their square shape, such nuts are easily installed into pre-prepared rectangular slots of the appropriate size: as a result, the nut cannot rotate and reliably holds the part in the required position.

This allows it to be used for reliable fixation of assemblies and units that are constantly exposed to dynamic or vibrational loads. The fastener is in demand in machine building and other industries.

Materials and features

Nuts of this type have a reduced height compared to standard fasteners. This makes them more compact and allows reducing the size of the threaded connection. Low nuts can be used in confined spaces where there is no room for standard fasteners. The products have a fine thread pitch, which allows increasing the number of thread turns and improving the strength of the connection.

Such fasteners are made from the following types of materials:

• Carbon steel St20, St30, property class 6.0 or 8.0. This provides increased load resistance and prevents failure due to mechanical stress. To prevent corrosion, the metal is coated with a durable zinc coating – the galvanizing is applied by the electroplating method.
• Stainless steels grades A2 and A4. This class of metals is not subject to corrosion, as special alloying elements are added to the alloy. Stainless steel nuts are not affected by high humidity and can withstand prolonged contact with moisture.

The materials retain their properties over a wide temperature range, which allows the fastener to be used in various conditions.

Technical specifications

Fasteners of this type have the following technical parameters:

• The thread diameter in the hole can range from M1.6 to M10.
• The nut’s width across flats can range from 3.2 to 16 mm.
• The products comply with product grade B.
• Height can range from 1 to 5 mm. It is possible to select the thinnest possible fastener, which is suitable for use in confined spaces.

The closest analog in characteristics is manufactured according to the DIN 557 standard, however such nuts may differ slightly in height and dimensions.

Applications

This type of fastener has found the widest application in machine-building industries. The nuts are used together with bolts, screws and studs to ensure a strong connection of parts and their reliable protection against spontaneous unscrewing that could create an emergency situation. Square-shaped products are used in the assembly of vehicles, machine tools, industrial equipment, various machinery and more. Square fasteners are an important component of various moving assemblies and units; their use increases the reliability of equipment assembly.

They can also be used in furniture manufacturing, various assembly and installation work, as well as for household purposes.

Order

FLOK supplies DIN 562 square nuts. The fasteners are manufactured by major Russian and foreign manufacturers.

Sales are conducted in wholesale lots: small, medium or large wholesale. FLOK offers fasteners in a wide range of sizes; consultants will help with the selection and placing the order. Delivery is possible to any region of Russia.

Dimensions of DIN 562 low square nuts in mm:

d	m min	s
M2	1.2	4
M2.5	1.4	5
M3	1.6	5.5
M4	1.8	7
M5	2.3	8
M6	2.72	10
M8	3.52	13
M10	4.52	17

d	m	s
M2	1.2	4
M3	1.8	5.5
M4	2.2	7
M5	2.7	8
M6	3.2	10
M8	4	13
M10	5	16