| 摘要 |
A magnetic drain bolt comprising a bolt body and a magnet. The bolt bod y comprises of a male-threaded member and a head member, the male-threaded member having a fastening protuberance formed at an end thereof. The magnet is comprised of a sintered ferrite material and has a recess formed at a bottom end thereof fo r receipt of the fastening protuberance, the recess having a depth sized equivalent to a heig ht of the fastening protuberance, the magnet having a diameter slightly smaller than a diameter of the male-threaded member. The fastening protuberance is secured with an adhesive to the magnet within the recess whereby the fastening protuberance provides additional support for securing the magnet to the bolt body. The magnetic drain bolt may be use d in association with an oil pan of an automobile or the like.
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