Slot
Cross recess
6-Lobe
Hex chamfered single face
Hex with hole
Hex with shoulder
Hex chamfered double faces
Nylon Insert
Hole on shank
Straight-knurl
Reduced shank
Normal shank
Increased shank
Shoulder
Waisted shank
Full thread
Flat point
Cone point
Dog point
Semitubular end
BS 1083-1965
BS hexagon bolt
BS 916-1953
BS black hex bolts-forget
BS black hex bolts-turning
BS 1083-2012
BS 1083-2017