This Website describes DIN standard Fastener in China.Wenzhou Nanlong Import & Export Trading CO.,LTD.(China)-There are DIN 6923 - Hexagonal Flange Nuts.And the the material are stainless steel (TP304-18-8,316,316L,310S.309S..317L.347H,904L...),carbon steel (C1018 C1022),aluminium,brass and so no. |