Arandelas helicoidales de presión sin picos (sección rectangular)
BN 20430
DIN 127 B
(Standard withdrawn)
~UNI 1751 B
~ČSN 021741
| Material |
Material
Spring steel
|
| Surface |
Surface
zinc plated blue
|
Toutes les caractéristiques
Standard
DIN 127 B (Standard withdrawn)
~UNI 1751 B
~ČSN 021741
Informations complémentaires
We recommend DIN 128 A (curved spring lock washers) for new construction: BN 768 / BN 769 / BN 770
Spring lock washers for UNC, UNF, and Ww thread: BN 767
Other coatings on request.
Spring lock washers for UNC, UNF, and Ww thread: BN 767
Other coatings on request.
Caractéristiques
| Material |
Material
Spring steel
|
| Surface |
Surface
zinc plated blue
|
Warnings
ISO 4042
Quenched and tempered fasteners ≥ 360 HV and tempered case-hardened fasteners with electroplated coatings: Susceptible to hydrogen embrittlement!
Further notice to residual risks can be found on our web page: Notes on use
BN 762 - DIN 127 B
Rosette elastiche spaccate senza becchi - Acciaio per molle - zincato meccanicamente bianco
BN 763 - DIN 127 B
Rosette elastiche spaccate senza becchi - Acciaio per molle - zincato meccanicamente giallo
BN 764 - DIN 127 B
Rondelles ressort sans becs - Acier ressort - zingué à chaud