Legend:
b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
r - radius
e - the diameter of the circumscribed circle (not less than)
s - size hex head turnkey
c - thickness of the mounting collar
ds - diameter of the screw shank
u - thread run
lg - length of the shank to thread
ls - length of the shank to the start of the thread
da - the maximum diameter of the stem at the head of the screw
dw - minimum diameter of the seat
办麓 - minimum size of the head on the key
Makings:
Steel: 10.9
Stainless: -
Plastic: -
Non Ferrous: -
Thread: 6g
Notes:
-
Table according to DIN 6914:
Thread d |
M12 |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
P |
1,75 |
2 |
2,5 |
2,5 |
3 |
3 |
3,5 |
4 |
b (see tab. below) |
above tde continuous steped line |
21 |
26 |
31 |
32 |
34 |
37 |
40 |
48 |
under tde continuous steped line |
23 |
28 |
33 |
34 |
37 |
39 |
42 |
50 |
c |
Min. |
0,4 |
0,4 |
0,4 |
0,4 |
0,4 |
0,4 |
0,4 |
0,4 |
Max. |
0,6 |
0,6 |
0,8 |
0,8 |
0,8 |
0,8 |
0,8 |
0,8 |
da |
Max. |
15,2 |
19,2 |
24 |
26 |
28 |
32 |
35 |
41 |
ds |
Nomial size |
12 |
16 |
20 |
22 |
24 |
27 |
30 |
36 |
Min. |
11,3 |
15,3 |
19,16 |
21,16 |
23,16 |
26,16 |
29,16 |
35 |
Max. |
12,7 |
16,7 |
20,84 |
22,84 |
24,84 |
27,84 |
30,84 |
37 |
dw |
Min. |
20 |
25 |
30 |
34 |
39 |
43,5 |
47,5 |
57 |
e |
Min. |
23,91 |
29,56 |
35,03 |
39,55 |
45,2 |
50,85 |
55,37 |
66,44 |
k |
Nomial size |
8 |
10 |
13 |
14 |
15 |
17 |
19 |
23 |
Min. |
7,55 |
9,25 |
12,1 |
13,1 |
14,1 |
16,1 |
17,95 |
21,95 |
Max. |
8,45 |
10,75 |
13,9 |
14,9 |
15,9 |
17,9 |
20,05 |
24,05 |
办麓 |
Min. |
5,28 |
6,47 |
8,47 |
9,17 |
9,87 |
11,27 |
12,56 |
15,36 |
r |
Min. |
1,2 |
1,2 |
1,5 |
1,5 |
1,5 |
2 |
2 |
2 |
s |
Nomial size = max. |
22 |
27 |
32 |
36 |
41 |
46 |
50 |
60 |
Min. |
21,16 |
26,16 |
31 |
35 |
40 |
45 |
49 |
58,8 |
Tab 2.
Thread size d |
M12 |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
l |
ls |
lg |
ls |
lg |
ls |
lg |
ls |
lg |
ls |
lg |
ls |
lg |
ls |
lg |
ls |
lg |
Nominal size |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
30 |
28,95 |
31,05 |
3,75 |
9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
35 |
33,75 |
36,25 |
8,75 |
14 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
40 |
38,75 |
41,25 |
13,75 |
19 |
8 |
14 |
|
|
|
|
|
|
|
|
|
|
|
|
45 |
43,75 |
46,25 |
16,75 |
22 |
13 |
19 |
6,5 |
14 |
|
|
|
|
|
|
|
|
|
|
50 |
48,75 |
51,25 |
21,75 |
27 |
18 |
24 |
11,5 |
19 |
10,5 |
18 |
|
|
|
|
|
|
|
|
55 |
53,5 |
56,5 |
26,75 |
32 |
23 |
29 |
16,5 |
24 |
15,5 |
23 |
|
|
|
|
|
|
|
|
60 |
58,5 |
61,5 |
31,75 |
37 |
28 |
34 |
21,5 |
29 |
20,5 |
28 |
17 |
26 |
|
|
|
|
|
|
65 |
63,5 |
66,5 |
36,75 |
42 |
33 |
39 |
26,5 |
34 |
25,5 |
33 |
22 |
31 |
|
|
|
|
|
|
70 |
68,5 |
71,5 |
41,75 |
47 |
38 |
44 |
31,5 |
39 |
30,5 |
38 |
27 |
36 |
24 |
33 |
|
|
|
|
75 |
73,5 |
76,5 |
46,75 |
52 |
41 |
47 |
36,5 |
44 |
35,5 |
43 |
32 |
41 |
29 |
38 |
24,5 |
35 |
|
|
80 |
78,5 |
81,5 |
51,75 |
57 |
46 |
52 |
41,5 |
49 |
40,5 |
48 |
37 |
46 |
34 |
43 |
29,5 |
40 |
|
|
85 |
83,25 |
86,75 |
56,75 |
62 |
51 |
57 |
46,5 |
54 |
45,5 |
53 |
42 |
51 |
39 |
48 |
34,5 |
45 |
25 |
37 |
90 |
88,25 |
91,75 |
61,75 |
67 |
56 |
62 |
49,5 |
57 |
48,5 |
56 |
44 |
53 |
44 |
53 |
39,5 |
50 |
30 |
42 |
95 |
93,25 |
96,75 |
66,75 |
72 |
61 |
67 |
54,5 |
62 |
53,5 |
61 |
49 |
58 |
49 |
58 |
44,5 |
55 |
35 |
47 |
100 |
98,25 |
101,75 |
|
|
66 |
72 |
59,4 |
67 |
58,5 |
66 |
54 |
63 |
52 |
61 |
47,5 |
58 |
40 |
52 |
105 |
103,25 |
106,75 |
|
|
71 |
77 |
64,5 |
72 |
63,5 |
71 |
59 |
68 |
57 |
66 |
52,5 |
63 |
43 |
55 |
110 |
108,25 |
111,75 |
|
|
76 |
82 |
69,5 |
77 |
68,5 |
76 |
64 |
73 |
62 |
71 |
57,5 |
68 |
48 |
60 |
115 |
113,25 |
116,75 |
|
|
81 |
87 |
74,5 |
82 |
73,5 |
81 |
69 |
78 |
67 |
76 |
62,5 |
73 |
53 |
65 |
120 |
118,25 |
121,75 |
|
|
86 |
92 |
79,5 |
87 |
78,5 |
86 |
74 |
83 |
72 |
81 |
67,5 |
78 |
58 |
70 |
125 |
123 |
127 |
|
|
91 |
97 |
84,5 |
92 |
83,5 |
91 |
79 |
88 |
77 |
86 |
72,5 |
83 |
63 |
75 |
130 |
128 |
132 |
|
|
96 |
102 |
89,5 |
97 |
88,5 |
96 |
84 |
93 |
82 |
91 |
77,5 |
88 |
68 |
80 |
135 |
133 |
137 |
|
|
|
|
94,5 |
102 |
93,5 |
101 |
89 |
98 |
87 |
96 |
82,5 |
93 |
73 |
85 |
140 |
138 |
142 |
|
|
|
|
99,5 |
107 |
98,5 |
106 |
94 |
103 |
92 |
101 |
87,5 |
98 |
78 |
90 |
145 |
143 |
147 |
|
|
|
|
104,5 |
112 |
103,5 |
111 |
99 |
108 |
97 |
106 |
92,5 |
103 |
83 |
95 |
150 |
148 |
152 |
|
|
|
|
109,5 |
117 |
108,5 |
116 |
104 |
113 |
102 |
111 |
97,5 |
108 |
88 |
100 |
155 |
151 |
159 |
|
|
|
|
114,5 |
122 |
113,5 |
121 |
109 |
118 |
107 |
116 |
102,5 |
113 |
93 |
105 |
160 |
156 |
164 |
|
|
|
|
|
|
118,5 |
126 |
114 |
123 |
112 |
121 |
107,5 |
118 |
98 |
110 |
165 |
161 |
169 |
|
|
|
|
|
|
123,5 |
131 |
119 |
128 |
117 |
126 |
112,5 |
123 |
103 |
115 |
170 |
166 |
174 |
|
|
|
|
|
|
|
|
124 |
133 |
122 |
131 |
117,5 |
128 |
108 |
120 |
175 |
171 |
179 |
|
|
|
|
|
|
|
|
129 |
138 |
127 |
136 |
122,5 |
133 |
113 |
125 |
180 |
176 |
184 |
|
|
|
|
|
|
|
|
134 |
143 |
132 |
141 |
127,5 |
138 |
118 |
130 |
185 |
180,4 |
189,6 |
|
|
|
|
|
|
|
|
139 |
148 |
137 |
146 |
132,5 |
143 |
123 |
135 |
190 |
185,4 |
194,6 |
|
|
|
|
|
|
|
|
144 |
153 |
142 |
151 |
137,5 |
148 |
128 |
140 |
195 |
190,4 |
199,6 |
|
|
|
|
|
|
|
|
149 |
158 |
147 |
156 |
142,5 |
153 |
133 |
145 |
200 |
195,4 |
204,6 |
|
|
|
|
|
|
|
|
|
|
152 |
161 |
147,5 |
158 |
138 |
150 |
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