My 121-778R000 Model Overview from Home Depot Appliance Parts

Screw-hex 1/4-20 X

Part #: HD9088079

Manufacturer Part #: 710-0641

$5.95

Screw, 3/8-24 x 1.50 (w/25mm Blade Adapter)

Part #: HD9088496

Manufacturer Part #: 710-1044

The hex bolt attaches to the washer and the square key. This part is an OEM from Craftsman for use in snowblowers and lawn mowers. It is available as an individual replacement part and is made of meta...

$5.95

Screw-hex 1/4-20 X

Part #: HD9088630

Manufacturer Part #: 710-0206

$5.92

Bolt-hex 5/16-18 X

Part #: HD9090868

Manufacturer Part #: 710-3038

$6.26

Kit-blade Adapter-

Part #: HD9117966

Manufacturer Part #: 753-0484

$26.03

Screw-hex

Part #: HD9100242

Manufacturer Part #: 710-0654A

This is a genuine replacement part manufactured for use with outdoor power equipment. The screw includes a lock washer and is commonly used to secure the motor to the frame. This screw has various app...

$5.95

Nut-speed

Part #: HD9099319

Manufacturer Part #: 726-0135

This is a genuine replacement part sourced directly from the manufacturer. The push nut is commonly found in yard equipment from MTD and Yard Machines, such as lawn tractors, snow throwers, and tille...

$9.08

Bolt-carriage 1/4-

Part #: HD9088619

Manufacturer Part #: 710-0134

This is an original Craftsman replacement part. The carriage screw is designed by the manufacturer for use in snowblowers and lawn tractors. This part is made of metal, and may be found in various l...

$5.95