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| Break-away Couplings and Bases | Manufacturer | Catalog Number | Approval Date |
| Precision Form, Inc. | PFI-200-1A Breakaway Couplings | 5/5/03 | |
| Akron Foundries, Inc. / Hapco | AASHTO No. TB6-9”–10 ½” to 12½” Bolt Circle | ||
| Dwg # A79402 – 4/4/98 | |||
| AASHTO No. TB5-9”–14 ½” to 15¼” Bolt Circle | |||
| Dwg # A79236 – 1/4/00 | 8/15/03 | ||
| Akron Foundries, Inc. / Valmont | CS-300 – Up to 12” Bolt Circle AASHTO No. TB6-9 | ||
| Dwg # KS-90 – 5/14/03 | |||
| CS-370 – 14 ½” to 15” Bolt Circle AASHTO No. TB5-9 | |||
| Dwg # KS-91 w/ Rev 1 | 6/20/03 | ||