Karbay 2 Pack 5630351002 5640321002 Lawn Mower Blade Bolt Nut Replacement & 5650705002 Lawn Mowers Blade Washer for EGO Power Parts LM2130 LM2133 LM2130SP LM2135SP LM2150SP LM2156SP 21" Lawn Mowers

What It Is

This is a 2-pack replacement set of blade bolts (part numbers 5630351002, 5640321002) and a blade washer (5650705002) designed for EGO Power+ 21-inch lawn mowers. It secures the mower blade to the spindle and provides proper torque distribution during operation.

Fitment & Compatibility

Before buying, confirm your mower model is one of these: LM2130, LM2133, LM2130SP, LM2135SP, LM2150SP, or LM2156SP. These are all 21-inch deck EGO models. The bolt has a 5/16″-24 thread pitch and a 15mm hex head—measure your existing bolt head or thread diameter to verify. The washer is flat, not cupped, and fits the 5/16″ bolt shaft. This is not compatible with EGO 20-inch or 56-volt commercial models.

Key Things to Know

• Quality: Bolts are zinc-plated steel; washers are hardened steel. Expect OEM-equivalent durability for residential use.
• Installation difficulty: Easy—use a 15mm socket and torque to 35–40 ft-lbs (check your manual). Do not reuse old washers.
• Common gotcha: The washer orientation matters—flat side against the blade, not against the bolt head. Reversing it can cause blade wobble.
• Set includes two bolts and two washers—enough for one mower with a spare, or for a dual-blade EGO model.

Should You Buy It

If you own one of the listed EGO 21-inch mowers and need to replace lost, stripped, or worn blade hardware, this is a solid, cost-effective choice. It’s ideal for routine blade swaps or after sharpening. Avoid if you have a different EGO model or need a cupped washer.