Genuine OEM replacement part, this item is sold individually.
As the description says, this is the Steering Shaft for all of the Lawn Tractors shown below.
One of the most popular reasons this part is replaced, is that the gear on the shaft becomes worn or stripped.
It is advised that you check the part number 717-0622C Steering Gear Segment, before replacing the just the Steering Shaft.

Genuine Manufacturer Approved Carriage Bolt is a standard part that fits a variety of products. This part is sold individually and the Nut is not included. The square area under the head is designed to fit into a square hole in the work piece it measures 5/16-18 x .75. It is this square hole that restrains the bolt and keeps it from turning when the nut is tightened.

This is a genuine OEM replacement part, it is sold individually.
Mulching blades have a more curved style surface and frequently include extra cutting surfaces along the blade edges.
This blade is designed for all the models listed below.
If used correctly with the mulching plug that is inserted into the mower, the clippings will stay under the deck longer and get re-cut.

This is an OEM part commonly used on Walk Behind Push Mowers. Blade Support fits between the bottom of the blade and the blade bolt to provide support for the blade. It is made out of metal to ensure parts durability. It is recommended to replace this part if the part is worn or damaged. Recommended tools for the repair are: hammer, 5/8” socket, and torque wrench.

Genuine OEM Hinged mulch cover for walk behind push mowers. This part is made out of Plastic, it includes the Metal Bracket and the Spring. The purpose of this part is to cover the grass chute opening on the deck to keep the grass under for mulching.

This is a genuine OEM replacement part, it is sold individually.
The control cable connects to the control handle of the lawn mower.
When the control handle is engaged the mower blade will begin to rotate, when the handle is released the blade will stop.

This part number has the cable covered with a total length of 40 inches & 13 inches of bare cable.
On the part number 946-1137 the cable is completely covered for a length of 53 inches.
Look at you cable before you order so you receive the correct one.