| 1 | 3/64 | 1/8 | 5/16 | 5/16 | 1/16 | 3/8 | 1/16 | NRC-U-6407 | ||||||||
| 2 | 1/16 | 1/16 | 3/16 | 5/16 | 1/16 | 3/8 | 1/32 | NRC-U-6408 | ||||||||
| 3 | 9/64 | 1/16 | 17/64 | 1/8 | 1/16 | 3/16 | 1/32 | NRC-U-6409 | ||||||||
| 4 | 5/32 | 15/64 | 5/8 | 3/8 | 3/16 | 9/16 | 1/8 | NRC-U-6410 | ||||||||
| 5 | *1/4 | 1/32 | 5/16 | 1/16 | 1/32 | 1/8 | 1/64 | NRC-U-6411 | ||||||||
| 6 | 11/32 | 1/8 | 5/8 | 9/32 | 9/32 | 1/2 | NRC-U-6412 | |||||||||
| 7 | 3/8 | 1/8 | 5/8 | 9/32 | 9/32 | 1/2 | 1/16 | NRC-U-6413 | ||||||||
| 8 | 1/2 | 3/16 | 7/8 | 3/16 | 3/16 | 3/8 | 3/32 | NRC-U-6414 | ||||||||
| 9 | 5/8 | 3/8 | 1-3/8 | 3/16 | 3/16 | 1/2 | 3/16 | NRC-U-6415 | ||||||||
| 10 | 2 | 1/2 | 3 | 1/4 | 1/4 | 1/2 | 1/4 | NRC-U-6416 | ||||||||