GB9074.4-88

Cross recessed pan head screw, spring washer and flat washer assemblies

十字槽盘头螺钉和弹簧垫圈及平垫圈组合件

Standard Type

GB

ICS

N/A

CCS

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Status

N/A

Issue Date

N/A

Implementation

N/A

Responsible Dept

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Drafting Unit

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