ASTM F436 standard Spring washer  covers the dimensional requirments of inch series Spring WASHER.The standard of ASTM F436 standard Spring washer  is ASTM F436   ,Website:http://www.chinajinrui.net,  the Spring washer is widely used, mainly goes with bolt and screw.ASTM F436 is with high hardness mostly made from #45 steel and other alloy steel.   StandardGradeFinshASTM F43635-45HRC     white zinc

     yellow zinc black oxide

     H.D.G

      Dacromet

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