锯齿锁紧垫圈 A型，外齿
BN 779
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M5a; M8a:用于六角头螺栓
Standard
DIN 6798 A (标准已废止)
~UNI 8842 A
~ČSN 021745
Features
| 材质 |
材质
弹簧钢
|
| 表面处理 |
表面处理
发黑
|
| 硬度 |
硬度
350-425 HV
|