GOST 7802-81

GOST 7802-81 covers furniture bolts with a hemispherical head, square neck and partial metric thread. The nominal thread diameter ranges from M5 to M24, and the fastener length ranges from 12 to 260 mm. This is one of the most common types of fasteners for joining wood and metal parts, most widely used in furniture manufacturing, but it can also be used in other industries. The product has a coarse thread pitch and can be used together with nuts and washers of the corresponding hole diameter.

Design features and materials

Both strength characteristics and aesthetic qualities are taken into account when manufacturing furniture bolts. For an aesthetic appearance of the joint, it is equipped with a hemispherical head with a smooth, shiny surface. Such bolts are used for joining wood, plastic and metal parts, and can be covered with decorative caps.

The furniture bolt is fitted with a square neck — this element prevents the joint from loosening spontaneously under load. The neck securely holds the bolt in the material, and the product is installed into a pre-drilled hole. When used together with washers, such a bolt can be used for fastening thin-sheet materials: the washer increases the contact area with the surface, so no cracks or scratches from excessive pressure remain on it.

The following materials can be used to manufacture furniture bolts GOST 7802:

• Carbon steel, plain or with a protective zinc coating. The zinc layer is applied by electroplating or thermal diffusion galvanizing, providing enhanced corrosion resistance.
• Stainless steel A2 and A4. This material is used if the fastener is intended for use in conditions of increased corrosive activity.
• Brass. This non-ferrous metal alloy is not subject to corrosion and has an attractive color. Brass bolts are used not only as a fastening element but also as a decorative one.

Equivalents of the bolt are also manufactured to the European standard DIN 603 and the international standard EN ISO 8677. When selecting equivalents, the product grade and other parameters should be compared beforehand — the correspondence may not be exact.

Fastener application features

Bolts manufactured to GOST 7802 or its international equivalents are widely used in furniture factories and private workshops. These fasteners are used for joining wooden parts and fastening furniture components made of particleboard, fiberboard, OSB and other board materials. The bolts are installed into holes of the corresponding diameter and secured with nuts; the neck prevents the joint from spontaneously turning and loosening.

Fasteners of this type can also be used in construction and industrial manufacturing for securely fixing parts.

FLOK supplies furniture bolts GOST 7802 in the specified diameters, lengths and versions, including options made of carbon steel, stainless steel, and brass.