Waved spring lock washers
BN 771
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标准
DIN 128 B (Standard withdrawn)
~UNI 8839 B
~ČSN 021731
其他信息
We recommend DIN 128 A (curved spring lock washers) for new construction: BN 768 / BN 769 / BN 770
特点
Material |
Material
Spring steel
|
Surface |
Surface
mechanical zinc plated blue
|