DIN933 M6 M24 1.4301 Hex Bolt
all the above are differernt DIN 933 full thread bolt , which made from material 1.4301, euqual to SS304.
it is a kind of resistant of acid material , which contain Ni 8-11% , and Cr 18-20% .
the 1.4301 bolt size can be hot forging or cold forged according quantity .
however it would be easy to cold forging from M6-M20 in big quantity.
the length can be check from the standard.
the surface is shine and without any gease and oil .
it was made from Ningbo , China.
here is the picture below.