Aircraft bolt material identification

[Vendee]

Originally Posted by ORAC

KenV, from here they seem to be 737-300/400/500 parts.

737-300 400 500 AMM ·É»úά»¤ÊÖ²á STANDARD PRACTICES - ENGINE(47)_À¶ÌìÃñº½Íø_Ãñº½·*Òë_º½¿Õ·*Òë_·ÉÐз*Òë_Ãñº½×ÊÁÏ

They are more likely GE or SNECMA parts. I did see in another website that one of the bolts the OP listed was associated with the CF6 engine and in the link you gave the bolts are associated with the CFM56.

It might help if the OP said where he obtained the bolts and I'm curious what he intends using them for.