FASTENING PART WITH SPACER MEMBER Russian patent published in 1998 - IPC

FIELD: securing parts on structural elements. SUBSTANCE: fastening part is provided with longitudinal wedge-shaped groove in area of tail-piece over part of its length. Depth of this grooves reduces towards its front end where spacer member is located. This member is made in form of wedge whose outer surface is provided with teeth projecting beyond outer surface of fastening part at least in part of depth. Surface of bottom of wedge-shaped longitudinal groove in zone of its reducing depth changes to outer surface of fastening part in area of tail-piece. Maximum depth of longitudinal wedge-shaped groove may be equal to at least half diameter of fastening part in area of tail-piece. Spacer member may be mounted in this groove on sliding layer made in form of plastic plate, for example. Front end of fastening part on side of tail-piece may be provided with end projection of reduced diameter for forming the scraping-off edge. Inlet bevel may be made on narrowing end of spacer member having form of wedge as far as point of first tooth. EFFECT: enhanced reliability. 12 cl, 5 dwg