From £0.10 Excl. VAT
| UNF TPI Chart (Threads Per Inch) | |||||
| Diameter | TPI | Diameter | TPI | Diameter | TPI |
| 1/4 UNF | 28 | 9/16 UNF | 18 | 11/8 UNF | 12 |
| 5/16 UNF | 24 | 5/8 UNF | 18 | 11/4 UNF | 12 |
| 3/8 UNF | 24 | 3/4 UNF | 16 | 13/8 UNF | 12 |
| 7/16 UNF | 20 | 7/8 UNF | 14 | 11/2 UNF | 12 |
| 1/2 UNF | 20 | Â 1 UNF | 12 | ||
| Thread Length Calculator | |
| (measure from under the head) | |
| Up to 6" = | 2 x diameter + 1/4" |
| Over 6" = | 2 x diameter + 1/2" |
Please note images Are for display purposes only, thread length will vary.
Available in a variety of finishes, click here for coating information.
UNF Nut options click here
Imperial Washers click here
