설명
추가 정보
We recommend DIN 137 B for new construction
Curved spring washers
BN 590Curved spring washers
BN 590- 표준
- DIN 137 A (Standard withdrawn) ~UNI 8840 A ~ČSN 021733
- Material
- Spring bronze
- Surface
- plain
We recommend DIN 137 B for new construction