| 摘要 |
Spacers are used where added bolt length is advantageous. Such spacers are usually one piece and are formed from tubing having a solid cylindrical wall which often splits or yields when stressed by highly torqued bolts. An improved spacer (10) is formed from wound coil (12) to form a spiral walled cylindrical body (20) having advantageous over prior spacers. Each spiral (14) includes a portion (26) which abuts each adjacent spiral (14) and a portion (30) which is free of such abutment.
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