BRASS FLAT WASHERS M3 M4 M5 M6 M8 M10 M12 M16 FORM A OR B
M16 (17mm FORM B 30mm 2.0mm. M8 (8.4mm FROM B 17mm 1.0mm. M12 (13mm FORM B 24mm 1.6mm. M16 17mm FORM A 30mm 3mm. M10 (10.5mm FORM B 21mm 1.25mm. M8 8.5mm FORM A 16mm 1.6mm. M12 13mm FORM A 24mm 2.5mm. ).