不锈钢锁紧螺母
不锈钢锁紧螺母也称为防松螺母,它和标准螺母的不同之处我们可以从上图中看到,不锈钢锁紧螺母的国标为GB/T6172.2来表示,但市场用使用最多的标准是德标DIN985和DIN982来描述它,DIN985指是的螺母的厚度要比DIN982的防松螺母要薄一些,在购买时可以详细注明相关标准。
不锈钢锁紧螺母的原理从实物图中就能发现,它是将螺纹旋进后碰到尼龙圈,因为尼龙圈的内径要小于螺纹直径,所以会产生很强的摩擦力,从而起到防松作用。
上图中的锁紧螺母,它是将尼龙圈换成金属片,拧入时,薄薄的金属片会顺着螺纹间距卡进去,这样就会形成比好的防松效果,用金属片来锁紧的螺母称为全金属防松螺母。
DIN985标准图纸示例
螺纹尺寸 D | M3 | M4 | M5 | M6 | M7 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | ||||
P | 螺距 | 粗牙 | 0.5 | 0.7 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | ||
细牙1 | / | / | / | / | / | 1 | 1 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | ||||
细牙2 | / | / | / | / | / | / | 1.25 | 1.25 | / | / | 1.5 | 1.5 | 1.5 | / | / | / | / | / | / | / | / | / | ||||
da | 最小值 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 | |||
最大值 | 3.45 | 4.6 | 5.75 | 6.75 | 7.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 19.5 | 21.6 | 23.7 | 25.9 | 29.1 | 32.4 | 35.6 | 38.9 | 42.1 | 45.4 | 48.6 | 51.8 | ||||
dw | 最小值 | 4.6 | 5.9 | 6.9 | 8.9 | 9.6 | 11.6 | 15.6 | 17.4 | 20.5 | 22.5 | 24.9 | 27.7 | 29.5 | 33.2 | 38 | 42.7 | 46.6 | 51.1 | 55.9 | 60.6 | 64.7 | 69.4 | |||
e | 最小值 | 6.01 | 7.66 | 8.79 | 11.05 | 12.12 | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 | 29.56 | 32.95 | 35.03 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 72.09 | 76.95 | 82.6 | |||
h | 最大值=公称 | 4 | 5 | 5 | 6 | 7.5 | 8 | 10 | 12 | 14 | 16 | 18.5 | 20 | 22 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 | |||
最小值 | 3.7 | 4.7 | 4.7 | 5.7 | 7.14 | 7.64 | 9.64 | 11.57 | 13.3 | 15.3 | 17.66 | 18.7 | 20.7 | 22.7 | 25.7 | 28.7 | 31.4 | 34.4 | 37.4 | 40.4 | 43.4 | 46.4 | ||||
m | 最小值 | 2.4 | 2.9 | 3.2 | 4 | 4.7 | 5.5 | 6.5 | 8 | 9.5 | 10.5 | 13 | 14 | 15 | 15 | 17 | 19 | 22 | 25 | 27 | 29 | 32 | 36 | |||
mw | 最小值 | 1.65 | 2.2 | 2.75 | 3.3 | 3.85 | 4.4 | 5.5 | 6.6 | 7.7 | 8.8 | 9.9 | 11 | 12.2 | 13.2 | 14.8 | 16.5 | 18.2 | 19.8 | 21.5 | 23.1 | 24.8 | 26.5 | |||
s | 最大值=公称 | 5.5 | 7 | 8 | 10 | 11 | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | |||
最小值 | 5.32 | 6.78 | 7.78 | 9.78 | 10.73 | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 | 26.16 | 29.16 | 31 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.8 | 68.1 | 73.1 | ||||
千件重kg | 0.5 | 1 | 1.4 | 2.4 | 3 | 5.1 | 10.6 | 17.2 | 26 | 34 | 45 | 65 | 75 | 100 | 162 | 212 | 317 | 415 | 499 | 628 | 771 | 998 |
①,产品等级:
≤ M 16: A级
> M 16: B级
②,材料:
钢,性能等级:≤ M39:5,6*,8,10;> M39:按协议。标准DIN 267-4
* 仅对细牙螺母
嵌件材料,如:尼龙
DIN982标准图纸示例(请注意,这是同款防松螺母的加厚规格)
螺纹规格 | M5 | M6 | M7 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | ||||
d | ||||||||||||||||
P | 螺距 | 粗牙 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | ||
细牙 | / | / | / | 1 | 1 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | ||||
细牙 | / | / | / | / | 1.25 | 1.25 | / | / | 1.5 | 1.5 | 1.5 | / | ||||
da | 最小值 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | |||
最大值 | 5.75 | 6.75 | 7.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 19.5 | 21.6 | 23.7 | 25.9 | ||||
dw | 最小值 | 6.9 | 8.9 | 9.6 | 11.6 | 15.6 | 17.4 | 20.5 | 22.5 | 24.9 | 27.7 | 29.5 | 33.2 | |||
e | 最小值 | 8.79 | 11.05 | 12.12 | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 | 29.56 | 32.95 | 35.03 | 39.55 | |||
h | 最大值=公称 | 6.3 | 8 | 8.5 | 9.5 | 11.5 | 14 | 16 | 18 | 20 | 22 | 25 | 28 | |||
最小值 | 6 | 7.7 | 8.2 | 9.14 | 11.14 | 13.64 | 15.3 | 17.3 | 19.16 | 20.7 | 23.7 | 26.7 | ||||
m | 最小值 | 4.4 | 4.9 | 6.14 | 6.44 | 8.04 | 10.37 | 12.1 | 14.1 | 15.1 | 16.9 | 18.1 | 20.2 | |||
mw | 最小值 | 3.52 | 3.92 | 4.91 | 5.15 | 6.43 | 8.3 | 9.68 | 11.28 | 12.08 | 13.52 | 14.48 | 16.16 | |||
s | 最大值=公称 | 8 | 10 | 11 | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 | |||
最小值 | 7.78 | 9.78 | 10.73 | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 | 26.16 | 29.16 | 31 | 35 | ||||
千件重(钢制)≈kg | 1.4 | 3.1 | 3.2 | 6 | 11.7 | 16.6 | 21 | 37.8 | 51.6 | 68 | 86 | 127 |