Nuts

A nut is a fastener with a threaded hole, used to create connections together with bolts, studs or screws with a washer. It usually has a hexagonal shape with inch or metric thread. A wrench is used to secure the fastener. The range of nuts is wide: crown, square, slotted and others — from simple to specialized. Fields of application include machine building, construction, furniture assembly and other industries. The main material is steel, often with the addition of brass, titanium or bronze and a protective coating. The production process is cold stamping using a press. Finished products are tested to GOST to determine the permissible load before thread stripping, the likelihood of deformation and other parameters.

Types of nuts and manufacturing standards

Nut production is regulated by the German DIN standard and the Russian GOST standard. In some cases an industry standard applies, for example, flange nuts OST 26-2041-96. Each standard contains basic dimensions, a drawing of the nut, manufacturing materials and quality requirements. The nut diameter is denoted on the drawing as D, m is the overall height, e is the diameter of the circumscribed circle.

Main types of nuts, their characteristics, features and purpose:

Hexagon nut

The most common type. Manufactured to several standards.

• DIN 934, equivalent to GOST 5915-70. Fine thread pitch. Used in construction machinery (bulldozers, excavators), for pumps and turbines, for agricultural machinery. Material — carbon and stainless steel, non-ferrous metals. Produced in a single design with two product grades: higher precision (grade A) for thread diameter M8–M16, normal precision (grade B) — for larger threads.

• DIN 985, no GOST equivalent, corresponds to ISO 10511. Low self-locking nut with a nylon insert. Sizes M3–45. Material — steel of property class 5, 6, 8, 10, stainless steel A1–A5, brass, aluminium. Coating — electroplated zinc or nickel plating.

• DIN 929. Hexagon weld nut, thread size M3–M16. Used for secure fixing of structural parts with connecting assemblies. Has a weld ring for a high-strength connection to the metal. Mounted with bolts and studs with metric thread. Material — steel with carbon content not exceeding 0.25%, stainless steel A1–A5.

Square nut with chamfer

Produced with no equivalents, to DIN 557, which contains technical requirements for square nuts with thread from M5 to M16, product grade C (low precision). Design — plain steel, with electroplated zinc or hot-dip zinc coating. Used for manufacturing and repair of agricultural machinery.

Furniture tee nut (insert nut)

Manufacturing standard — DIN 1624, no equivalent. The nut has teeth that prevent rotation, allowing threaded fasteners to be driven in from one side. Used in furniture manufacturing. Material — electroplated zinc-coated steel.

Wing nut with lobes

Manufacturing standard — DIN 1624, equivalent to GOST 3032-76. Sizes M3–24. Used for connections with moderate load that need to be frequently disassembled or tightened, usually in furniture. Tightened by hand using the flat wings, no wrench required. Manufacturing material — malleable cast iron, electroplated or nickel-plated steel, stainless steel A2/A4, plastic, brass.

How to place an order

Products in the catalogue can be found using the filter, selecting items by category and parameters. An online fastener and hardware weight calculator is available for order calculation.

To place an order, select products in the catalogue and add them to the cart. The «Send request» button opens a form where you need to specify the contact person and preferred method of contact.