UNF partially threaded hex head bolt in grade 8.8 steel with electro-galvanised (FZB) finish, dimensioned to ANSI B18.2. Filed under imperial bolts and set screws (fortification / bolts and set screws / steel bolts and set screws). Principal data: UNF thread 5/16", length 51 mm, nominal thread length 22 mm, 24 threads per inch, male hex head, wrench width 1/2", indicative package size 100 pcs. Supplied under manufacturer part number 931UNF5160512, EAN 5711160208575, HS code 7318.15, country of origin Germany.