2 A级和B级六角头螺栓GB/T 5782、5785—2000标准
A级和B级六角头螺栓GB5782、GB5785—2000标准
A级和B级六角头螺栓见表4.1-2。
表4.1-2 A级和B级六角头螺栓(mm)
用途:
与螺母配合,利用螺纹连接方法,使两个零件(结构件)连接成为一个整体。A级和B级的螺栓,主要适用于表面光洁、对精度要求高的机器、设备上。螺栓上的螺纹,一般均为粗牙普通螺纹;细牙普通螺纹螺栓的自锁性较好,主要适用于薄壁零件或承受交变载荷、振动
和冲击载荷的零件,还可用于微调机构的调整。
螺纹规格(6g) | d | Ml.6 | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | |
dxp | — | — | — | — | — | — | — | — | M8xl | Ml0x1 | M12x1.5 | (M14x1.5) | M16x1.5 | (M18X1.5) | M20x2 | ||
— | — | — | — | — | — | — | — | — | Ml0x1.25 | M12x1.25 | — | — | — | M20X1.5 | |||
b (参考) | l≤125 | 9 | 10 | 11 | 12 | 13 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | |
125<l≤200 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | ||
l>200 | 28 | 29 | 30 | 31 | 32 | 33 | 35 | 37 | 41 | 45 | 49 | 53 | 57 | 61 | 65 | ||
da | max | 2 | 2.6 | 3.1 | 3.6 | 4.1 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 | |
ds | max | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | |
e min | A级 | 3.41 | 4.32 | 5.45 | 6.01 | 6.58 | 7.66 | 8.79 | 11.05 | 17.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | |
B级 | — | — | — | — | — | — | — | — | — | — | — | — | 26.17 | 29.56 | 32.95 | ||
S | max | 3.2 | 4 | 5 | 5.5 | 6 | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | |
min | A级 | 3.02 | 3.82 | 4.82 | 5.32 | 5.82 | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | |
B级 | — | — | — | — | — | — | — | — | — | — | — | — | 23.16 | 26.16 | 29.16 | ||
K 公称 | 1.1 | 1.4 | 1.7 | 2 | 2.4 | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | ||
l① 长度范围 | A级 | 12~16 | 16~20 | 16~25 | 20~30 | 20~35 | 25~40 | 25~40 | 30~60 | 35~80 | 40~100 | 45~120 | 50~140 | 55~140 | 60〜150 | 65~150 | |
B级 | — | — | — | — | — | — | — | — | — | — | — | — | 160 | 160~180 | 160〜200 |
续表4.1-2:
螺纹规格(6g) | d | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) | M56 | (M60) | M64 | |
dxp | (M22X1.5) | M24X2 | (M27X2) | M30x2 | (M33X2) | M36X3 | (M39X3) | M42X3 | (M45X3) | M48X3 | (M52X4) | M56X4 | (M60X4) | M64X4 | ||
b (参考) | l≤125 | 50 | 54 | 60 | 66 | 72 | 78 | 84 | — | — | — | — | — | — | — | |
125<l≤200 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | 116 | 124 | 132 | 140 | ||
l>200 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | 129 | 137 | 145 | 153 | ||
da | max | 24.4 | 26.4 | 30.4 | 33.4 | 36.4 | 39.4 | 42.4 | 45.6 | 48.6 | 52.5 | 56.6 | 63 | 67 | 71 | |
ds | max | 22 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 | 52 | 56 | 60 | 64 | |
e min | A级 | 37.22 | 39.98 | — | — | — | — | — | — | — | — | — | — | — | — | |
B级 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | 93.56 | 99.21 | 104.86 | ||
S | max | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | |
min | A级 | 33.38 | 35.38 | — | — | — | — | — | — | — | — | — | — | — | — | |
B级 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | 82.8 | 87.8 | 92.8 | ||
K 公称 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 | 35 | 38 | 40 | ||
l① 长度范围 | A级 | 70~150 | 80 ~ 150 | 90~150 | 90~150 | 100-150 | 110~150 | — | — | — | — | — | — | — | — | |
B级 | 160〜220 | 160〜240 | 160〜260 | 160〜300 | 160〜320 | 110〜360② | 130〜380 | 120〜400 | 130〜400 | 140〜400 | 150〜400 | 160〜400 | 180〜400 | 200〜400 |
注:尽可能不采用括号内的规格。
①长度系列为20〜50(5进级)、(55)、60、(65)、70〜160 (10进级)、180〜400 mm(20 mm 进级);
②GB/T 5785规定为160 〜300 mm。