IFI-145 covers hex flange nuts and large hex flange nuts. Drawing shows regular flange-nut form and key dimensions.
| Thread | s max | s min | dc max | dc min | m max | Series |
|---|---|---|---|---|---|---|
| 1/4 | .438 | .428 | .594 | .574 | .236 | Regular |
| 3/8 | .562 | .551 | .750 | .728 | .347 | Regular |
| 1/2 | .750 | .736 | 1.031 | 1.000 | .458 | Regular |
Selected regular-series data. Distinguish regular from large-flange series and verify the edition before specifying a part.