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现行 MIL MS21277B
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SCREW, MACHINE- STEEL, DOUBLE HEXAGON, EXTENDED WASHER,.138-40 (MIL-S-8879 THREAD) (ASG) (NO S/S DOCUMENT) (SUPERSEDING MS21277A) 机械用钢制扩展垫圈双六角螺钉.138-40(MIL-S-8879螺纹)(ASG)(无S/S文件)(替代MS21277A)
发布日期: 1963-09-17
分类信息
发布单位或类别: 美国-美国军事规范和标准
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