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SCM435 HEX BOLT (FULL THREAD), STEEL CLASS 10.9 ZINC PLATED
 
 Material  Iron (SCM435)
It is called chrome molybdenum steel, which is an alloy steel for machine structural use, and is an alloy steel with improved hardenability.
Since it contains Cr (chromium), it has better corrosion resistance than 'iron'.
It is stronger than 'Iron' and 'S45C'




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