Unified Thread Type U-NUT
60° thread angle Compatible with US, UK, and Canadian standards
Dimensional Charts

Unified Thread Type U-NUT Dimensional Chart
●Available
Thread Accuracy:JIS2B Unit:mm
Material of the Nut Body | SS400 | S45C (thermal refined) |
SUS304 | SS400 | S45C (thermal refined) |
SUS304 | Unit Weight (g) Approx. |
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Material of the Friction Ring | SUS301 | |||||||||||||||||||
Nominal Diameter - Number of threads |
Width Across Flat (s) |
Across orners (e) |
Overall Height (h) |
Thread Height (m) Approx. |
UNC | UNF | ||||||||||||||
Coarse (UNC) |
Fine (UNF) |
Base | Max. | Min. | Max. | Min. | Base | Tolerance | Double Chamfer (Type 2) |
Double Chamfer (Type 2) |
Double Chamfer (Type 2) |
Double Chamfer (Type 2) |
Double Chamfer (Type 2) |
Double Chamfer (Type 2) |
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#10-24 | #10-32 | 9.52 | 9.52 | 9.20 | 10.99 | 10.50 | 3.9 | ±0.3 | 3.2 | ● | ● | ● | ● | 1.5 | ||||||
1/4-20 | 1/4-28 | 11.11 | 11.11 | 10.88 | 12.82 | 12.40 | 6.6 | 5.6 | ● | ● | ● | ● | 3.4 | |||||||
5/16-18 | 5/16-24 | 12.70 | 12.70 | 12.43 | 14.65 | 14.15 | 7.8 | ±0.4 | 6.8 | ● | ● | ● | ● | ● | 5.2 | |||||
3/8-16 | 3/8-24 | 14.28 | 14.28 | 14.00 | 16.51 | 15.96 | 9.5 | 8.3 | ● | ● | ● | ● | ● | ● | 7.5 | |||||
7/16-14 | 7/16-20 | 17.46 | 17.46 | 17.15 | 20.16 | 19.51 | 10.9 | 9.5 | ● | ● | ● | ● | ● | 12.7 | ||||||
1/2-13 | 1/2-20 | 19.05 | 19.05 | 18.70 | 21.99 | 21.34 | 12.6 | 11.1 | ● | ● | ● | ● | ● | ● | 18.1 | |||||
5/8-11 | 5/8-18 | 23.81 | 23.81 | 23.42 | 27.50 | 26.70 | 15.6 | ±0.6 | 13.9 | ● | ● | ● | ● | ● | ● | 35.9 | ||||
3/4-10 | 3/4-16 | 28.57 | 28.57 | 27.64 | 32.99 | 31.50 | 18.1 | 16.3 | ● | ● | ● | ● | ● | ● | 56.1 | |||||
7/8-9 | 7/8-14 | 33.33 | 33.33 | 32.24 | 38.50 | 36.76 | 21.6 | ±0.8 | 19.1 | ● | ● | ● | ● | 87.8 | ||||||
1"-8 | 1"-14 | 38.10 | 38.10 | 36.83 | 43.99 | 41.99 | 24.2 | 21.7 | ● | ● | ● | 125.3 |