Easy
15-30 minutes
This is a genuine OEM sourced replacement part designed for use with NordicTrack exercise equipment. This hex key is used to make necessary adjustments to the unit. Angular profile of this item makes tightening loosening the hex socket head screws extremely easy. This wrench is made from durable metal and it is sold individually.
Hex Key 128457
OEM part for: NordicTrack, ProForm, Freemotion, HealthRider, Golds Gym, Weslo
Part Number: 128457
$21.44
In Stock
Ships within 1 business day 
Compatibility
This Hex Key will fit the following 2191 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
NordicTrack
ProForm
Freemotion
HealthRider
Golds Gym
Weslo
Show More Compatible ModelsThis item works with the following types of products:
- Treadmill Parts
- Elliptical Parts
- Exercise Bike Parts
Customer Part Reviews ?
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Easy to use to repair treadmill
Perfect hex key—one side adjusts the walking belt tension, and the other side can be used to remove the bolts on top of the walking board.
Guest -
February 19, 2021
Verified Purchase
Perfect Part for the NordicTrack c900i!
I ordered this hex key to remove the screws near the base of my treadmill. It is a perfect replacement for the hex key I lost to my NordicTrack c900i treadmill.
Erika -
January 7, 2021
Verified Purchase
Treadmill part.
Perfect. Great company
Guest -
June 18, 2019
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
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We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Hex Key
I am looking to move my treadmill and would like to do this in pieces. I am missing the "Allen Key" that came with the treadmill. In the parts manual it is listed as number 61. Can you direct me in ordering the right part. I need the device that loosens the bolts that attaches the walking board to the front of treadmill. Thx for ur time.
Sally
for model number NCTL11990
asked on 2022-10-04
Hello Sally, Thank you for contacting us. We have researched the model you have provided and have found the part you are looking for is Part Number:128457. Thank you for your inquiry, good luck with this repair!
eReplacementParts Team October 04, 2022
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Needed a hex key to adjust belt in order to lubricate it.
gail - December 13, 2017
👍 3 of 8 people found this instruction helpful
Tool Type
Treadmill
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Silicone spray
Parts Used
Loosened the belt in order to lubricate underneath it.
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OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
