DIN931 hex bolts,nuts,washers,screws 1.our factory produce din standard hex bolts,nuts,washers,screws 2. size: m6-30x20-250mm DIN931 ... hex bolts,nuts,washers,screwsgradestandardmaterialdiameterlengthsurfacepackagepaymentMOQ3.6(A)DIN(A)Carbon Steelm6-m3010mm-250mm( ... buyer's option13)delivery lead time: 30days DIN931 hex bolts,nuts,washers,screws