A cap nut is a blind hex nut with an acorn-shaped top.Cap Nuts are used to cover exposed threaded stud, rod and bolt ends with a dome-like cap for the protruding part of the screw or bolt. This provides safety and a finished look to the exposed threaded end. It is a nut that has a domed top to cover the threads. This is to prevent contact with the external thread to protect the threads or protect other things the threads would rub against. In addition the dome gives a more finished appearance. It is usually made of brass, steel, stainless steel (low carbon content) or nylon. It can also be chrome plated and given a mirror finish. It is known as acorn nut.
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D1 |
H |
S |
E |
M3 |
6 |
5.5 |
6.08 |
M4 |
8 |
7 |
7.66 |
M5 |
10 |
8 |
8.79 |
M6 |
12 |
10 |
11.05 |
M8 |
15 |
13 |
14.38 |
M10 |
18 |
17 |
18.9 |
M12 |
22 |
19 |
21.1 |
M14 |
25 |
22 |
24.49 |
M16 |
28 |
24 |
26.75 |
M18 |
32 |
27 |
30.14 |
M20 |
34 |
30 |
33.53 |
M22 |
39 |
32 |
35.72 |
M24 |
42 |
36 |
39.98 |
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