Болты с полукруглой головкой и усом
ГОСТ 7801 – 81
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Болты с увеличенной полукруглой головкой и усом класса точности С |
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d | D | k | R≈ | W | b | |
l ≤ 120 | l > 120 | |||||
6 | 14 | 3 | 11 | 3 | 18 | – |
8 | 18 | 4 | 14 | 3,5 | 22 | – |
10 | 23 | 5 | 18 | 5 | 26 | 32 |
12 | 28 | 6 | 22 | 6 | 30 | 36 |
16 | 35 | 8 | 26 | 8 | 38 | 44 |
20 | 44 | 10 | 32 | 9 | 46 | 52 |
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Стандартные длины | ||||||
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l | Номинальный диаметр резьбы d | |||||
6 | 8 | 10 | 12 | 16 | 20 | |
25 | × | – | – | – | – | – |
30 | × | × | – | – | – | – |
35 | × | × | × | – | – | – |
40 | × | × | × | × | × | – |
45 | × | × | × | × | × | – |
50 | × | × | × | × | × | – |
55 | × | × | × | × | × | × |
60 | × | × | × | × | × | × |
65 | × | × | × | × | × | × |
70 | × | × | × | × | × | × |
75 | × | × | × | × | × | × |
80 | × | × | × | × | × | × |
90 | × | × | × | × | × | × |
100 | × | × | × | × | × | × |
110 | – | × | × | × | × | × |
120 | – | × | × | × | × | × |
130 | – | × | × | × | × | × |
140 | – | × | × | × | × | × |
150 | – | × | × | × | × | × |
160 | – | – | × | × | × | × |
170 | – | – | × | × | × | × |
180 | – | – | × | × | × | × |
190 | – | – | × | × | × | × |
200 | – | – | × | × | × | × |
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