Comparison : Item # Z31P1955, Hex Head Cap Screws, Grade 8, National Coarse, Plain Steel (2"-4 1/2)
Item # Z31P1960, Hex Head Cap Screws, Grade 8, National Coarse, Plain Steel (2"-4 1/2)
Item # Z31P1965, Hex Head Cap Screws, Grade 8, National Coarse, Plain Steel (2"-4 1/2)
Item # Z31P1970, Hex Head Cap Screws, Grade 8, National Coarse, Plain Steel (2"-4 1/2)
Item # Z31P1975, Hex Head Cap Screws, Grade 8, National Coarse, Plain Steel (2"-4 1/2)