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| UNF - Unified National Fine Thread. Similar to UNC. UNC and UNF threads are the choices for the customary screws and nuts. |
N 0 - 80 UNF |
0,060 |
1,524 |
1,25 |
80 |
0,317 |
N 1 - 72 UNF |
0,073 |
1,854 |
1,55 |
72 |
0,353 |
N 2 - 64 UNF |
0,068 |
2,184 |
1,90 |
64 |
0,397 |
N 3 - 56 UNF |
0,099 |
2,515 |
2,15 |
56 |
0,453 |
N 4 - 48 UNF |
0,112 |
2,845 |
2,40 |
48 |
0,529 |
N 5 - 44 UNF |
0,125 |
3,175 |
2,70 |
44 |
0,577 |
N 6 - 40 UNF |
0,138 |
3,505 |
2,95 |
40 |
0,635 |
N 8 - 36 UNF |
0,164 |
4,166 |
3,50 |
36 |
0,705 |
N 10 - 32 UNF |
0,190 |
4,826 |
4,10 |
32 |
0,794 |
N 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 |
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