for machinery parts, automobile parts
*Hex head tap bolt, round head splin bolt, indented hex flange bolt 
*Low Carbon Steel, SS304 
*1/4” – 3/4”  
*Zinc Plated Cr+6 or Cr+3, Zinc Yellow Cr+3 or Cr+6, Grey or Black Phosphate
*Ruspert 500HRS, 1000HRS or 1500HRS  
*Origin: Taiwan
*Stable and consisten quality