Description
Unified Fine (UNF) 1/2″, Brass Full Hexagon Nuts – 20 Threads Per Inch
Fixaballsells Unified Fine (UNF) 1/2″ Full Hexagon Nut,Solid Brass.
Full Nuts
Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads’ friction, a slight stretch of the bolt, and compression of the parts.
The most common shape is hexagonal, for similar reasons as the bolt head – 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. It takes only 1/6th of a rotation to obtain the next side of the hexagon and grip is optimal. However polygons with more than 6 sides do not give the requisite grip and polygons with fewer than 6 sides take more time to be given a complete rotation.
Orders placed before 2pm are dispatched same day (Mon-Fri).
Standard, Free Delivery is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a faster delivery time, select 1st class or courier at checkout.
Please make your ‘no. of items in pack‘, ‘diameter‘ and ‘quantity‘ of pack selection from the drop down menus.
UNC Full Hexagonal Nut Diameters Available
| 1/2″-20 FULL NUTSBrass |
UNIFIED THREAD STANDARDS
The basic American standards for fastening screw threads as agreed upon by standard bodies of U.K, Canada and the United States.
Unified National Fine (UNF) is a thread form with a 60 degree flank angle, rounded roots and flat crests. For a given diameter it has a smaller thread pitch than an equivalent diameter UNC thread.
|
Thread |
T.P.I UNC |
T.P.I UNF |
f (max) |
h (max) |
|
0 |
80 |
0.156 |
0.050 |
|
|
1 |
64 |
72 |
0.156 |
0.050 |
|
2 |
56 |
64 |
0.188 |
0.066 |
|
3 |
48 |
56 |
0.188 |
0.066 |
|
4 |
40 |
48 |
0.250 |
0.098 |
|
5 |
40 |
44 |
0.312 |
0.114 |
|
6 |
32 |
40 |
0.312 |
0.114 |
|
8 |
32 |
36 |
0.344 |
0.130 |
|
10 |
24 |
32 |
0.375 |
0.130 |
|
12 |
24 |
28 |
0.438 |
0.161 |
|
1/4 |
20 |
28 |
0.438 |
0.226 |
|
5/16 |
18 |
24 |
0.500 |
0.273 |
|
3/8 |
16 |
24 |
0.562 |
0.337 |
|
7/16 |
14 |
20 |
0.688 |
0.385 |
|
1/2 |
13 |
20 |
0.750 |
0.448 |
|
9/16 |
12 |
18 |
0.875 |
0.496 |
|
5/8 |
11 |
18 |
0.938 |
0.559 |
|
3/4 |
10 |
16 |
1.125 |
0.665 |
|
7/8 |
9 |
14 |
1.312 |
0.776 |
|
1 |
8 |
12 |
1.500 |
0.887 |
Image is for illustrative purposes only.
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