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Πίνακας Αμερικάνικών Σπειρωμάτων UNF Thread Unified

UNF - Unified National Fine Thread. Similar to UNC. UNC and UNF threads are the choices for the customary Unified screws and nuts.
Nominal 
Diameter
Major 
Diameter 
Inch
Major 
Diameter 
mm
Tapping Drill 
Size 
mm
TPI Pitch 
mm
0 - 80 UNF 0.060 1.524 1.25 80 0.317
1 - 72 UNF 0.073 1.854 1.55 72 0.353
2 - 64 UNF 0.068 2.184 1.90 64 0.397
3 - 56 UNF 0.099 2.515 2.15 56 0.453
4 - 48 UNF 0.112 2.845 2.40 48 0.529
5 - 44 UNF 0.125 3.175 2.70 44 0.577
6 - 40 UNF 0.138 3.505 2.95 40 0.635
8 - 36 UNF 0.164 4.166 3.50 36 0.705
10 - 32 UNF 0.190 4.826 4.10 32 0.794
12 - 28 UNF 0.216 5.486 4.70 28 0.907
1/4" - 28 UNF 0.250 6.350 5.50 28 0.907
5/16" - 24 UNF 0.313 7.938 6.90 24 1.058
3/8" - 24 UNF 0.375 9.525 8.50 24 1.058
7/16" - 20 UNF 0.438 11.112 9.90 20 1.270
1/2" - 20 UNF 0.500 12.700 11.50 20 1.270
9/16" - 18 UNF 0.563 14.288 12.90 18 1.411
5/8" - 18 UNF 0.625 15.875 14.50 18 1.411
3/4" - 16 UNF 0.750 19.050 17.50 16 1.587
7/8" - 14 UNF 0.875 22.225 20.40 14 1.814
1" - 12 UNF 1.000 25.400 23.25 12 2.117
1 1/8" - 12 UNF 1.125 28.575 26.50 12 2.117
1 1/4" - 12 UNF 1.250 31.750 29.50 12 2.117
1 3/8" - 12 UNF 1.375 34.925 32.75 12 2.117
1 1/2" - 12 UNF 1.500 38.100 36.00 12 2.117
UNF Thread