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BS A 312:1997

Заменен
Screws, pan head, internal offset cruciform ribbed or unribbed drive, stepped shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1100 MPa. Dimensions — 8 стр.
ICS
49.030.20 Bolts, screws, studs / Болты, винты, шпильки