| 牌號 | F3394 Type 1 | 
|---|---|
| 對應(yīng)標(biāo)準(zhǔn) | ASTM  F3394/F3394M-2023 硬化鋼支撐墊圈和反作用墊圈的英制和公制尺寸標(biāo)準(zhǔn)規(guī)范 Standard Specification for Hardened Steel Backup and Reaction Washers Inch and Metric Dimensions | 
| 歸類 | 碳鋼 | 
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