CNTRSNK#SCR#HOLE
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ussn.gph
Holes for St.Countersunk Head Screws - ANSI B18.5, ANSI B18.3, Normal to Surf.
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ussnp.gph
Holes for St.Countersunk Head Screws - ANSI B18.5, ANSI B18.3, Normal to Plane.
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