NAIL-SHAPED FASTENING PART

摘要

FIELD: mechanical engineering. SUBSTANCE: part 1 has spacer portion defined by U-shaped recess 5 and wedge 6 inserted into recess. Wedge 6 abuts against recess bottom 11 raised toward front end 10. Outer surface of wedge 6 is provided with teeth and extends beyond contour of shank 2 of fastening part 1. Wedge may be moved on recess bottom 11 to retain fixed fastening part in case opening is widened due to cracks. EFFECT: increased efficiency, prolonged service life and simplified construction.