Serrated lock washers type J, internal serrations
BN 780
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M5a; M8a: for hex head screws
規範
DIN 6798 J (Standard withdrawn)
~UNI 8842 J
~ČSN 021746
產品資訊
| Material |
Material
Spring steel
|
| Surface |
Surface
black
|
| Hardness |
Hardness
350-425 HV
|