摘要 |
A self-locking demountable pin consisting of a central stay bolt (10) with an internal hexagonal through bore (11) for its tightening by a key and comprising at its two ends two opposite-handed external threads, right handed (12) and left handed (14) respectively, which cooperate with the corresponding threads of two elastic end nuts (13, 15) each provided with an annular flange (17) having a frusto-conical surface and decreasing in thickness in an outward direction, its taper being greater than that of two frusto-conical flares (3, 4) into which the nuts (13, 15) are to be inserted. |