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Blade Nut

Part Number: 15X100MA

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Questions & Answers

Repair Instructions

*This part replaces obsolete part #: 722382, 15X100ZMA, 15X100 and MU15X100MA.

Product Information

Manufacturer: Murray, Snapper

Product Number: 15X100MA

Classification: Part

Weight: 0.03 lbs.

Shipping: Ships Worldwide

Specifications

9/16-18

Description:

This is a Genuine OEM replacement part used on a variety of Murray Lawn Tractors. This item is Metal an is Sold Individually. A lock nut is a type of nut that resists loosening when properly threaded onto a bolt. This nut is used to hold the blade and it is a right hand threaded.

Warning: California's Proposition 65

Compatibility

This part is compatible with the following machines:

Murray

7800292 (385002x108C) Lawn Tractor
7800412 (EYK125380) Lawn Tractor
7800303 (425621x108D) Lawn Tractor
7800410 (ELT155420G) Lawn Tractor
7800411 (ELT155420H) Lawn Tractor
7800413 (EYK155420G) Lawn Tractor
7800414 (EYK155420H) Lawn Tractor
7800399 (ELT175460H) Lawn Tractor
7800400 (ELT12460H) Lawn Tractor
7800416 (EYK12460H) Lawn Tractor
7800494 (465624x108A) Lawn Tractor
7800495 (465625x108A) Lawn Tractor
7800272 (312006x11E) Lawn Tractor
7800274 (312006x11E) Lawn Tractor
7800336 (312006x51A) Lawn Tractor
7800337 (309007x51A) Lawn Tractor
7800275 (309006x78C) Lawn Tractor
7800276 (385048x114) Lawn Tractor
7800277 (385048x51A) Lawn Tractor
7800294 (385002x78D) Lawn Tractor
7800319 (385048x151) Lawn Tractor
7800278 (405021x114) Lawn Tractor
7800279 (405021x51) Lawn Tractor
7800280 (405628x114) Lawn Tractor
7800281 (405628x51) Lawn Tractor
7800295 (405012x108) Lawn Tractor
7800297 (405012x108) Lawn Tractor
7800300 (405606x78C) Lawn Tractor
7800320 (405021x151) Lawn Tractor
7800321 (405628x151) Lawn Tractor
7800162 (LT155420) Lawn Tractor
7800191 (LT185420) Lawn Tractor
7800282 (425307x51A) Lawn Tractor
7800302 (425017x78B) Lawn Tractor
7800303 (425621x108C) Lawn Tractor
7800304 (425622x78C) Lawn Tractor
7800307 (CLT155420) Lawn Tractor
7800309 (CLT185420) Lawn Tractor
7800361 (LT135420C) Lawn Tractor
7800362 (LT155420C) Lawn Tractor
7800370 (FLT185420) Lawn Tractor
7800192 (LT20460) Lawn Tractor
7800283 (465307x51) Lawn Tractor
7800306 (465624x78B) Lawn Tractor
7800311 (CLT20460) Lawn Tractor
7800503 (309007x151A) Lawn Tractor
7800528 (309029x11G) Lawn Tractor
7800529 (309007x51B) Lawn Tractor
7800336 (312006x51A) Lawn Tractor
7800337 (309007x51A) Lawn Tractor
312006x50C Lawn Tractor
385002x108B Lawn Tractor
385003x108 Lawn Tractor
385047x51A Lawn Tractor
405013x50C Lawn Tractor
405020x51A Lawn Tractor
405606x50C Lawn Tractor
405612x108 Lawn Tractor
405627x51A Lawn Tractor
425018x00A 42" Lawn Tractor
425621x108B 42" Lawn Tractor
425622x50C 42" Lawn Tractor
465617x51A 46" Lawn Tractor
309006x50C 30" Lawn Tractor
309006x78A-SW 30" Lawn Tractor
309029x11E (10/30) 30" Lawn Tractor
312006x190A (552550) 30" Lawn Tractor
312006x50B-SW 30" Lawn Tractor
312006x78B 30" Lawn Tractor
385002x190A (552544) 38" Lawn Tractor
385002x50B-SW 38" Lawn Tractor
385002x78C 38" Lawn Tractor
385044x51A-SW 38" Lawn Tractor
405013x50B-SW 40" Lawn Tractor
405017x190A (552545) 40" Lawn Tractor

Expand the 150+ compatible machines

Products Compatibility

This item works with the following types of products:

• Lawn Tractor

Questions & Answers

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Repair Instructions: Submitted by Customers Like You

1 of 1 people found this instruction helpful

Tool Type:

Lawn Mower

Parts Used:

Washer - 17X165MA

Blade Nut - 15X100MA

Splined Spindle Shaft - 94129MA

Pulley, Jackshaft - 92851MA

Blade - 95103E701MA

Jackshaft Housing - 492574MA

Repair Difficulty:

Medium

Time Spent Repairing:

30-60 minutes

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Pneumatic impact wrench

Both blade shafts were bent and bearings needed replacing.

1. Removed the cutting deck from the mower.
2. Used an impact wrench to dis-assemble and remove the components.
3. Replaced the upper pulleys, the spindle shafts, the shaft housings (mandrills) and the cutting blades.
4. Reassembled the components.
5. Replaced the cutting deck.

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Tool Type:

Lawn Tractor

Parts Used:

Blade Nut - 15X100MA

Repair Difficulty:

Expert

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Wrench Set, welder, angel grinder,acet torch

drive belt broke

replaced the drive belt once I got the right size.
then replaced the blades an the deck. had to cut the nuts off the shaft then order new nuts then buy a die to clean up the threads. then tighten everything up then heated one part of the deck up bend it back away from the blade. then welded the broken wheel bracket back on deck then made new pieces to fill in the holes caused by stones flying through the deck. filled the holes then put the deck back on after a little touch up paint. total time about 3 days.

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Tool Type:

Lawn Tractor

Parts Used:

Blade Nut - 15X100MA

Splined Spindle Shaft - 94129MA

Spacer - 094130MA

Adapter, Blade - 92466MA

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Socket set, Wrench Set

loose blade stripped threads on shaft

had to remove the mower deck to replace the shaft and reinstall deck

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Tool Type:

Lawn Tractor

Parts Used:

Blade Nut - 15X100MA

Splined Spindle Shaft - 94129MA

Blade - 95103E701MA

Jackshaft Housing - 492574MA

Repair Difficulty:

Easy

Time Spent Repairing:

30-60 minutes

Tools Used:

Socket set, Wrench Set, Breaker Bar for all Nuts / Screws

Jack-shilf bearings & shaft wore out, the blades were bad, all new parts purchased fit great.

I used my 2 ton engine lift to raise the lawn tractor mower front end high enough to do the repair job easily. 3 of 5 screws attaching jack-shaft to housing broke. Could not remove the spacer from old main shaft to replace with new shaft. Hardware store for new screws, I had metal tubing on hand to make a new spacer. This old machine is working again.

Thanks, for having all the parts I needed.

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Tool Type:

Lawn Mower

Parts Used:

Washer - 17X166MA

Washer - 17X165MA

Blade Nut - 15X100MA

Housing, Mandrel - 455962MA

Single Blade - 56217E701MA

Repair Difficulty:

Medium

Time Spent Repairing:

30-60 minutes

Tools Used:

Socket set, Adjustable Wrench

Bad mandrel housing, and broke bolt

Lifted front end of mower and placed on 3 ft. 2x4
Removed mower blade retainer nut , washers and blade found had a broken blade adapter.
then found mandrel was bad.
Removed mandrel Bolts which one of them snapped off.
Removed mower deck pin so front of deck swung down
Removed Mandrel with pulley etc.
Removed pulley and put on New mandrel.
Put mandrel and pulley back into position raising the mower deck and putting pin back in place; had to fight with the belt a little bit. Put bolts in place, tightened them up for mandrel, put blade adapter on then Blade washer and nut and tightened that down and lowered front of lawn mower.

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Tool Type:

Lawn Tractor

Parts Used:

Hex Head Washer Screw - 2828635SM

Washer - 17X91MA

Blade Nut - 15X100MA

Splined Spindle Shaft - 94129MA

Spacer - 094130MA

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Socket set, Wrench Set, Air rachet

Lawn tractor mower deck needed spindles replaced and new belts.

1. Removed mower deck from tractor.
2. Removed belt guards from deck and removed belts.
3. Removed old blades.
4. Removed all necessary brackets and pulleys to access spindles.
5. Removed all three spindles.
6. Cleaned mower deck, bead blasted rust from deck, primered and painted deck.
7. Installed new parts in spindles and installed spindles in mower deck, lubed spindles with synthetic grease through grease zerts on spindles.
8. Reattached all brackets and installed new blades.
9. Reinstalled pulleys and new belts.
10. Reinstalled belt guards and reconnected mower deck to lawn tractor.
11. Adjusted and leveled mower deck to factory specs.

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0 of 1 people found this instruction helpful

Tool Type:

Lawn Tractor

Parts Used:

Blade Nut - 15X100MA

Muffler - 1001717MA

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Screwdriver, Socket set, Wrench Set

Muffler burnt out, lost nut

Removed the old muffler, installed new with no un needed heat shields and replaced missing blade nut.

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Discussion

Discussion for Blade Nut - ( 15X100MA )

Discussion is closed. To ask our experts a question about a part, use the Q&A feature.

Question: Blade Nut

jmd1949

Are the nuts that hold the blades left or right thread

Hello jmd1949,

The 15X100MA is a right hand thread.

Hope that helps,
-WJA

Reviews

Average Rating (out of 5):

3 Reviews

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Quality parts and great service

All parts ordered were recieved and of the best quality, it took a week to recieve all parts here in South Africa. An honest pleasure to spend money and get absolutely fantastic service. I will definitely use you guys again. Outstanding.

iGlobal - July 6, 2019 Verified Purchase