View Historical Standards for A421/A421M:

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Document Designation and Title Year Select Item(s) A421/A421M Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete 05 A421/A421M Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete 02 A421/A421M Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete 98a