Single Upset Spool Bolts Double Upset Spool Bolts 
Used with spool insulators ANSI-53-2 ; ANSI standard C135.31
Hot Dip Galvanized Steel per ASTM A123/A153 CSA G164
| Catalog No. | Bolt Dia. | Shank Length | Overall Length | Thread Length | Approx. Ship Wt. Per Each (lbs) | |
| inch | inch | inch | inch | |||
| Single Upset | ||||||
| SPBS5808 | 5/8 | 8 | 12 3/4 | 4 | 1.4 | |
| SPBS5809 | 9 | 13-3/4 | 4 | 1.5 | ||
| SPBS5810 | 10 | 14-3/4 | 4 | 1.6 | ||
| SPBS5812 | 12 | 16-3/4 | 6 | 1.7 | ||
| SPBS5814 | 14 | 18-3/4 | 6 | 1.8 | ||
| SPBS5816 | 16 | 20 3/4 | 6 | 1.9 | ||
| SPBS5818 | 18 | 22 3/4 | 6 | 2.0 | ||
| SPBS5820 | 20 | 24 3/4 | 6 | 2.1 | ||
| Double Upset | ||||||
| SPBD5808 | 5/8 | 8 | 13 3/4 | 4 | 1.66 | |
| SPBD5809 | 9 | 14 3/4 | 4 | 1.62 | ||
| SPBD5810 | 10 | 15 3/4 | 4 | 1.68 | ||
| SPBD5812 | 12 | 17 3/4 | 6 | 1.86 | ||
| SPBD5814 | 14 | 19 3/4 | 6 | 2.04 | ||
| SPBD5816 | 16 | 21 3/4 | 6 | 2.09 | ||