Home » Tender for The Work Involves The Supply Of High-tensile Countersunk Head Screws, Specifically Of Size M8x60 And Grade 12.9, Adhering To The Is:1367 Standard. The Screws Must Be Sourced From Approved Manufacturers Such As Tvs, Dfl, Unbrako, Or Tuff. Ht Csk Head Screw, India