10.9 Steel UNC UNF 4#-10# Hex Socket Countersunk Screws Flat Head Bolts DIN 7991

Grade 10.9 Steel Hex Socket CountersunkScrewsAllen Socket Flat Head Bolts Machine Screws, DIN 7991. ● Standard:DIN 7991 ( ISO 10642 ) (GB /T 70.3 ). UNC / UNF 4#, 6#, 8#, 10#. 10# - 32 UNF. 4# - 40 UNC.

eBay