Professional fastener industry manufacturer / supplier in China, offering ASME B 18.2.5m - 2013 12-Point Flange Head Screws 12.9 ASTM F468m, ISO 9254 - 2008 Aerospace - Bolts, Normal Spline Head, Normal, En 2874 - 1996 Aerospace Series-Bolts Large Bihexagonal Head Close Tolerance Normal Shank, and so on.
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