IR/L-55° :  Internal 55° partial profile, laydown threading inserts. IR/L - Ground periphery and rake, IRB - with a chipformer and peripherally ground, IRM - With a chipformer. Application: general industry.  
 Internal left-hand shown
 
Internal thread milling Internal threading
Alternat For : 16IRB G 55 , IC908 Grade Remarks
5901854 IC508  





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