Exmark 3290-357 Whiz Nut Hhf Fastener

Product Description

The EXMARK 3290-357 is a Whiz nut HHF fastener used in the assembly and maintenance of Exmark lawn and garden equipment. This hardware component serves as a locking or securing fastener, holding critical assemblies together on commercial and residential mowing equipment. Whiz nuts feature a serrated or friction-locking flange that resists loosening from vibration, making them well suited for high-cycle outdoor power equipment environments. Technicians and service professionals rely on OEM-spec fasteners like this one to maintain proper torque retention and equipment integrity during scheduled maintenance or repair work.

This nut is intended for use in Exmark lawn and garden equipment assemblies where an HHF-style Whiz nut is specified by the manufacturer. It is a direct OEM replacement part sourced through authorized Exmark parts channels, appropriate for commercial turf maintenance equipment serviced by professional landscaping technicians or equipment dealers.

Key Features

• Whiz nut design with flange-locking serrations to resist vibration loosening
• OEM Exmark part for precise fit in specified assemblies
• HHF hex head flange configuration for standard wrench or socket installation
• Suitable for lawn and garden equipment maintenance and repair

Compatibility

Designed as an OEM-style replacement fastener for Exmark lawn and garden equipment assemblies that specify the 3290-357 Whiz nut HHF. Consult your equipment service manual to confirm fitment for your specific model.

Installation Notes

Installation should be performed by a qualified equipment technician or dealer familiar with Exmark service procedures. Disengage all blades, shut off the engine, and remove the ignition key before accessing any fastener assembly. Use the appropriate metric or standard wrench or socket to seat the flange nut fully against the mating surface. Follow the equipment manufacturer's service manual for proper assembly sequence and any applicable torque guidance for the specific joint.

Technical Specifications

• Part Type: Whiz Nut HHF Fastener

Standard Information

• Brand: EXMARK
• Manufacturer Part Number: 3290-357