SN EN 2879:2017现行
Aerospace Series - Nuts, Anchor, Self-Locking, Air Resistant, Sealing, Floating, Two Lug, With Counterbore, In Corrosion Resisting Steel, Passivated, Mos[2] Lubricated - Classification: 900 Mpa (At Ambient Temperature)/235 Degrees C
出版：Swiss Standards
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