This is a A-102297 Bolt, Rotary Cutter Blade PN: 102297Main Description As Following : A-102297 Bolt, Rotary Cutter Blade P.N: 102297 Bolt Diameter: 1-1/8"-12 UNFHead Diameter: 2.46"Neck Diameter: 1.11"Outside Length: 3.51"Shoulder Diameter: 1.5"Shoulder Length: .55"Thread Length: 1.385" Stocked As: A-7A4997 Found in Section & Models : Hay Tool Parts > Rotary Cutter Blade Bolts & Nuts, Brown ROTARY CUTTER: SEVERAL Associated Items : New Also This is An Aftermarket Product And : Bolt Diameter: 1-1/8"-12 UNF Head Diameter: 2.46" Neck Diameter: 1.11" Outside Length: 3.51" Shoulder Diameter: 1.5" Shoulder Length: .55" Thread Length: 1.385"