| 摘要 |
A forged, integral bolt (20) has a head, a tapered neck (22), a shank, and a plurality of plastically deformable, raised, contact surface portions (31) uniformly positioned adjacent the neck and extending axially and radially of the bolt for spreading a load applied to the bolt. Each raised portion has a base portion contiguous the neck, and an elongated, V-shaped, ridge portion raised above the base which is constructed to contact and fay with a congruent wall portion of a bolt bore (12) in a support structure. The bolt may have various shapes. (FIGS. 1-3, 10-23). The ridges may extend up onto the sides of the head. (FIG. 9). The ridge portions and base portions may be integrally forged as a pair of symmetrical, self-aligning, inserts (40) separate from, but mating with, opposite sides of the neck when a load is applied to the bolt. A doughnut-shaped, repair washer (50) for sealing enlarged holes has a plurality of teeth (53) integral with a flat or curved bottom major surface for gripping a surface which is to be sealed and grooves (51, 54) which cooperate with the bolt and a nut (23) to simultaneously seal the bore (52) at the top and bottom surfaces.
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