Key Features

• John Deere hexagonal head flanged screw, M20 x 110 — externally threaded tension fastener designed for secure, removable joints when tightened by turning the head.
• Flanged head distributes clamping load across the joint to help maintain even pressure.
• Versatile engagement options: can be inserted through holes in assemblies, mate with a tapped or preformed internal thread, or form its own mating thread in the host material.
• Genuine John Deere part (Z78644) ensuring compatibility with Deere equipment and reliable performance in maintenance and assembly tasks.
• Dimensions: Ø20 mm (0.79 in) diameter, L110 mm (4.33 in).

Product Details

• Part number: Z78644
• Brand: John Deere
• Type: Hexagonal head flanged screw; externally threaded tension fastener
• Size: M20 x 110 (Ø20 mm, L110 mm)
• Engagement options: Through-hole insertion, mating with internal threads, or forming its own mating thread in the host material

Compatibility

• Suitable for John Deere equipment assemblies requiring an M20 external thread and a 20 mm diameter fastener.
• Compatible with components that use tapped/internal threads or where the fastener can form a mating thread in the base material.
• Part number Z78644 aligns with Deere-maintained specifications for accurate fit and reliable performance in service and assembly workflows.