Also called clearance spacers. They have an OD tolerance of ±0.015", ID tolerance of ±0.005", length tolerance of ±0.015", and are off-white.
| Size | ID |
| No. 0 | 0.064" |
| No. 2 | 0.09" |
| No. 4 | 0.115" |
| No. 6 | 0.14" |
| No. 8 | 0.166" |
| No. 10 | 0.192" |
| No. 12 | 0.218" |
| 1/4" | 0.252" |
| 5/16" | 0.315" |
| 3/8" | 0.38" |
| 1/2" | 0.505" |
| 5/8" | 0.63" |
| 3/4" | 0.755" |
| 1" | 1.005" |
