UNC/UNF Hexagon Hex Head Screws A2 Stainless Bolts 10# 1/4 5/16 3/8 7/16 1/2 5/8
UNF(Fine)10#-32 UNF、1/4-28 UNF、5/16-24 UNF、3/8-24 UNF、7/16-20 UNF、1/2-20 UNF. UNC(Coarse): 1/4-20 UNC、5/16-18 UNC、3/8-16 UNC、7/16-14 UNC、1/2-13 UNC、5/8-11 UNC. Model: UNC/UNF Hexagon Hex Head Screws. Product Type: Hexagon Head Screws.