FED-STD-H28-8 Revision B:1992
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Screw-Thread Standards for Federal Services Section 8 Dryseal Pipe Threads
06-10-1992
Requirements for Dryseal type pipe threads and their gages. These contact at the crest and root to assure metal-to-metal contact with or before flank contact. This prevents spiral leakage allowing joint assembly without using a lubricant or sealer. If not unacceptable lubricants may be used to minimize the possibility of galling in assembly. Coverage includes thread design and thread gaging.
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