GOST 28778-90 Self-anchoring spacer bolts for construction
Bolts GOST 28778-90 are special fasteners, as they are integral and several parts and have a special purpose .Bolts GOST 28778-90 – steel self-anchoring spacer bolts, with a jamming element of climatic modifications U3.1, U3 and UHLZ in accordance with GOST 15150, intended for fastening parts of building structures, pipelines, equipment, etc. to concrete, reinforced concrete and brick structures of buildings and structures.
The bolt structure consists of a bolt and a jamming element.
Products must be manufactured with accuracy class A and B.
Material of parts BSR type of climatic modification U3.1 should be made of steels used for bolts of strength class 4.6 and higher, and versions U3 and UHLZ – from steels used for foundation bolts.
GOST 28778-90.pdf p >
An example of a self-anchored spacer symbol bolt iaerm thread 8 mm. length 85 mm execution
Explanation of designation: БСР 8х85 У GOST 28778-90
High demand for these bolts extends to construction. It is used to fasten parts of building structures, pipelines, equipment, etc. to concrete, reinforced concrete and brick structures of buildings and structures.