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FED FED-STD-H28/20B Change Notice 1
- SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 20 INSPECTION METHODS FOR ACCEPTABILITY OF UN, UNR, UNJ, M, AND MJ SCREW THREADS (SUPERSEDING FED-STD-H28/20A)
- Amendment by Federal Specifications and Standards, 12/21/1994
- Publisher: FED
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