Flat washer:1) Materials: steel and stainless steel2) Finish: plain, zinc, yellow zinc plated 3) Specifications: DIN125A, DIN9021, BS4320A/B/C/E/F/G, DIN 440, DIN 6916,     DIN126,4) Standard: 7349, IFI SAE, JIS, F436, 434Thread rod:Features:  1) Material: Ss304, Ss316, steel and stainless steel2) Finish: plain, zinc 3) Class: 4.8, 5.84) Standard: BSW, ASTM AND DIN975 ect.5) Quality: according to international standard Packing:Pallet and carton