Wholesale Discount Self Drilling Screws - ASME B18.2.1 UNC Hex Bolt Grade 5 Black Oxide Inch Size 1/2-13 – Hongji
Wholesale Discount Self Drilling Screws - ASME B18.2.1 UNC Hex Bolt Grade 5 Black Oxide Inch Size 1/2-13 – Hongji
Wholesale Discount Self Drilling Screws - ASME B18.2.1 UNC Hex Bolt Grade 5 Black Oxide Inch Size 1/2-13 – Hongji Detail:
Description
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70% items delivered within 5 days
80% items delivered within 7 days
90% items delivered within 10 days
Bulk orders, please contact customer service
Please contact us for more information, such as the weight, the packing specification, the price list, and so on.
|
Dia/d |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
1-1/8 |
1-1/4 |
1-3/8 |
1-1/2 |
|
|
PP |
UNC |
20 |
18 |
16 |
14 |
13 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
6 |
|
UNF |
28 |
24 |
24 |
20 |
20 |
18 |
16 |
14 |
12 |
12 |
12 |
12 |
12 |
|
|
8-UN |
- |
- |
- |
- |
- |
- |
- |
- |
- |
8 |
8 |
8 |
8 |
|
|
ds |
max |
0.26 |
0.324 |
0.388 |
0.452 |
0.515 |
0.642 |
0.768 |
0.895 |
1.022 |
1.149 |
1.277 |
1.404 |
1.531 |
|
min |
0.237 |
0.298 |
0.36 |
0.421 |
0.482 |
0.605 |
0.729 |
0.852 |
0.976 |
1.098 |
1.223 |
1.345 |
1.47 |
|
|
s |
max |
0.438 |
0.5 |
0.562 |
0.625 |
0.75 |
0.938 |
1.125 |
1.312 |
1.5 |
1.688 |
1.875 |
2.062 |
2.25 |
|
min |
0.425 |
0.484 |
0.544 |
0.603 |
0.725 |
0.906 |
1.088 |
1.269 |
1.45 |
1.631 |
1.812 |
1.994 |
2.175 |
|
|
e |
max |
0.505 |
0.577 |
0.65 |
0.722 |
0.866 |
1.083 |
1.299 |
1.516 |
1.732 |
1.949 |
2.165 |
2.382 |
2.598 |
|
min |
0.484 |
0.552 |
0.62 |
0.687 |
0.826 |
1.033 |
1.24 |
1.447 |
1.653 |
1.859 |
2.066 |
2.273 |
2.48 |
|
|
k |
max |
0.188 |
0.235 |
0.268 |
0.316 |
0.364 |
0.444 |
0.524 |
0.604 |
0.7 |
0.78 |
0.876 |
0.94 |
1.036 |
|
min |
0.15 |
0.195 |
0.226 |
0.272 |
0.302 |
0.378 |
0.455 |
0.531 |
0.591 |
0.658 |
0.749 |
0.81 |
0.902 |
|
|
r |
max |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.06 |
0.06 |
0.06 |
0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
|
min |
0.01 |
0.01 |
0.01 |
0.01 |
0.01 |
0.02 |
0.02 |
0.02 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
|
|
b |
L≤6 |
0.75 |
0.875 |
1 |
1.125 |
1.25 |
1.5 |
1.75 |
2 |
2.25 |
2.5 |
2.75 |
3 |
3.25 |
|
L＞6 |
1 |
1.125 |
1.25 |
1.375 |
1.5 |
1.75 |
2 |
2.25 |
2.5 |
2.75 |
3 |
3.25 |
3.5 |
|
|
Dia/d |
1-5/8 |
1-3/4 |
1-7/8 |
2 |
2-1/4 |
2-1/2 |
2-3/4 |
3 |
3-1/4 |
3-1/2 |
3-3/4 |
4 |
|
|
PP |
UNC |
- |
5 |
- |
4-1/2 |
4-1/2 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
|
UNF |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
8-UN |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
|
|
ds |
max |
1.658 |
1.785 |
1.912 |
2.039 |
2.305 |
2.559 |
2.827 |
3.081 |
3.335 |
3.589 |
3.858 |
4.111 |
|
min |
1.591 |
1.716 |
1.839 |
1.964 |
2.214 |
2.461 |
2.711 |
2.961 |
3.21 |
3.461 |
3.726 |
3.975 |
|
|
s |
max |
2.438 |
2.625 |
2.812 |
3 |
3.375 |
3.75 |
4.125 |
4.5 |
4.875 |
5.25 |
5.625 |
6 |
|
min |
2.356 |
2.538 |
2.719 |
2.9 |
3.262 |
3.625 |
3.988 |
4.35 |
4.712 |
5.075 |
5.437 |
5.8 |
|
|
e |
max |
2.815 |
3.031 |
3.248 |
3.464 |
3.897 |
4.33 |
4.763 |
5.196 |
5.629 |
6.062 |
6.495 |
6.928 |
|
min |
2.616 |
2.893 |
3.099 |
3.306 |
3.719 |
4.133 |
4.546 |
4.959 |
5.372 |
5.786 |
6.198 |
6.612 |
|
|
k |
max |
1.116 |
1.196 |
1.276 |
1.388 |
1.548 |
1.708 |
1.869 |
2.06 |
2.251 |
2.38 |
2.572 |
2.764 |
|
min |
0.978 |
1.054 |
1.13 |
1.175 |
1.327 |
1.479 |
1.632 |
1.815 |
1.936 |
2.057 |
2.241 |
2.424 |
|
|
r |
max |
0.09 |
0.12 |
0.12 |
0.12 |
0.19 |
0.19 |
0.19 |
0.19 |
0.19 |
0.19 |
0.19 |
0.19 |
|
min |
0.03 |
0.04 |
0.04 |
0.04 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
|
|
b |
L≤6 |
3.5 |
3.75 |
4 |
4.25 |
4.75 |
5.25 |
5.75 |
6.25 |
6.75 |
7.25 |
7.75 |
8.25 |
|
L＞6 |
3.75 |
4 |
4.25 |
4.5 |
5 |
5.5 |
6 |
6.5 |
7 |
7.5 |
8 |
8.5 |
|
Detail drawing
What does the “UNC” meaning?
UNC refers to the coarse thread in the United States unified thread UN series (optional external thread root radius).
What”s the Black Oxide surface treatment?
Black oxide, a common means of chemical surface treatment. Black oxide is a common method of chemical surface treatment. The principle is to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. When the appearance requirements are not high, blackening can be used, and the surface of steel parts is blackened, which is also called blue.
The commonly used methods of black oxide treatment include traditional alkaline heating blackening and room temperature blackening which occurs later. However, the blackening process at room temperature is not very effective for low carbon steel. Alkaline blackening is subdivided, and there is a difference between once blackening and twice blackening. The main components of blackening liquid are sodium hydroxide and sodium nitrite. The temperature difference required for blackening is not large, and a good surface can be obtained between 135-155 °C, but the time required is a little long.
Packing
About us
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The pretty loaded projects management experiences and one to a person support model make the high importance of business enterprise communication and our easy understanding of your expectations for Wholesale Discount Self Drilling Screws - ASME B18.2.1 UNC Hex Bolt Grade 5 Black Oxide Inch Size 1/2-13 – Hongji , The product will supply to all over the world, such as: Cyprus, Porto, Iceland, During in 11 years, We've participated in more than 20 exhibitions, obtains the highest praise from each customer. Our company has been devoting that "customer first" and committed to helping customers expand their business, so that they become the Big Boss !
By Bernice from Norwegian - 2018.11.04 10:32
It can be said that this is a best producer we encountered in China in this industry, we feel lucky to work with so excellent manufacturer.
By Eleanore from Jeddah - 2017.09.30 16:36
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