BIS: Countersunk Flat Head Screws – Type H/Z Cross Recess – Part 2
Product Countersunk flat head screws (common head style) with type H or Type Z Cross Recess – Product Grade A part 2 Steel Screws of Property Class 8.8, Stainless Steel Screws and Non – Ferrous Metal Screws Certification Body Bureau of Indian Standards Indian Standard 7485 (Part 2): 2018/ISO 7046-2: