304HC Stainless steel thread rolling nails Grade:200Cu Head Dia.:5.0mm-9. ... Cert.:ISO9001 BV 304HC Stainless steel thread rolling nails Details as follows: Product NameStainless steel thread rolling nails StandardAISI ASTMGrade200Cu,201, ... head counter sunk ,Sinker ,Checkered head countersunkType of ShanksSmooth ,Annular thread ,Square twisted ,Square smoothType of pointsDouble points ,Diamond points , ...