Description
UNC, Full Hex Nut, A2-70/ 304 Stainless Steel, DIN 934.
Fixaballsells Unified Coarse (UNC) 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 3/4″, 7/8″, 1″, Full Nut, A2-70/ 304 Stainless Steel, BS 1768, DIN 934.
Full Hexagon 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. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts (eg cage nuts) for inaccessible areas.
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 ‘diameter‘, ‘no. of items‘ and ‘quantity‘ of packsfrom the drop down menus.
Imperial, A2-70/ 304 Stainless Steel UNC Full Hex NutDiameters:
| 1/4-20 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 5/16-18 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 3/8-16 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 7/16-14 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 1/2-13 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 9/16-12 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 5/8-11 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 3/4-10 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 7/8-9 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
| 1″-8 UNC HEXAGON FULL NUT ASME B18.2.2 A2 STAINLESS STEEL BS 1768 |
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 Coarse (UNC)is a thread form with a 60 degree flank angle, rounded roots and flat crests. For a given diameter it has a larger thread pitch than an equivalent diameter UNF thread. The unified thread is based on inch sizes and was first standardised in 1948 unifying the Whitworth and American standard thread forms.
UNF Full Nut Thread Pitches and Distance Across Flat Dimensions
|
Fixaball Ltd Fixings and Fasteners UK UNC Full Hexagon Nut DIN 934 UNC Thread Pitches and Distance Across Flats |
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|
Thread |
T.P.I UNC |
T.P.I UNF |
f (max) |
h (max) |
|
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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