GOST 28191-89 Worm clamp

 GOST 28191-89 Worm Drive Hose Clamp is a fastener that is installed in the area where two elements are joined, at a distance from the edge of at least 1-1.5 times the width of the clamp, and tightened with a screwdriver or wrench. GOST 28191-89 is a German standard for Worm Drive Hose Clamps that describes the parameters and requirements for these fasteners. This standard specifies the dimensions, materials and manufacturing requirements for clamps used to connect various types of pipes or hoses to other system elements, such as pumps, filters or valves.

Fastening group of GOST 28191-89

     The clamps of GOST 28191-89 are made of stainless steel and belong to the stainless steel fasteners group.

Materials for the manufacture of GOST 28191-89 clamps

     Clamps of State Standard GOST 28191-89 are made of stainless steel grades A2 and A4. It allows the bolts to be used at high temperature extremes and in aggressive and humid environments.

Application range of GOST 28191-89 clamps

     A worm clamp, also called a button clamp or a variable-diameter clamp, consists of two gullets with different diameters that are connected by a screw and a screw nut. Thanks to this design, the clamp can be attached to different diameters of pipes and hoses, which allows it to be used to connect different elements of the system without the need to use a separate clamp for each size. This type of clamp is quite common in various industries and provides a secure connection of pipes and hoses to other elements of the system.