Zinc Plated Hex Flange Nut - M8

Zinc Plated Hex Flange Nut - M8

Item # 185917

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Fastenal Accessories and Parts - 185917
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  • Brake Controller
  • Hardware
  • Fastenal
Call 800-298-8924 to order Fastenal accessories and parts part number 185917 or order online at etrailer.com. Free expert support on all Fastenal products. Guaranteed Lowest Price and Fastest Shipping for Zinc Plated Hex Flange Nut - M8. Accessories and Parts reviews from real customers.


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  • Reviews (31)
  • Q & A (62)
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Fastenal Accessories and Parts - 185917


  • Zinc Plated Hex Flange Nut - M8
  • Quantity: 1
  • Used on Chevrolet and GMC pickups to connect the factory-run 12 volt lead and trailer brake power lead to the posts in the fuse box under the hood

0185917 M8-1.25 Fastenal Zinc Plated Hex Flange Nut






Customer Reviews

Zinc Plated Hex Flange Nut - M8 - 185917

Average Customer Rating:  5.0 out of 5 stars   (31 Customer Reviews)


- 185917
by:

Best price I found, very good quality, quick delivery. What's not to like? 658726



- 185917
by:

Items arrived quickly. Installed in minutes. The videos available online are very helpful. 658422



- 185917
by:

Well, it's a nut. Not much that can go wrong. Used this on my GMT400 Yukon. (1996 Yukon) for the AUX post in the fuse box for installing my trailer brake controller and to get AUX power for the trailer plug. 654445



- 185917
by:

good 653054



- 185917
by:

Product worked great! 638689



- 185917
by:

But does its job. 513212



- 185917
by:

Perfect 490979



- 185917
by:

Fit my 07 Chevy avalanche for finishing up installing brake control 472659



- 185917
by:

Great Price ! 422126



- 185917
by:

Came on time 387671



- 185917
by:

No problems.. 320180



- 185917
by:

Just as advertised and exactly what I n eeded. 310313



- 185917
by:

For only xx cents this saved me a trip to hardware store to hook up brake controller under hood 2008 Silverado 309577



- 185917
by:

very pleased 285262



- 185917
by:

Perfect!! I installed the P3 on my 2013 Chevy Tahoe. 275406



- 185917
by:

Works like a nut should. 240090



- 185917
by:

Great product easy to install good price .Called customer service with one question they were very helpful . 226327



- 185917
by:

Fit perfect. Saved me a trip to the hardware store. 198084



- 185917
by:

Fit my 2010 Silverado great. 189201



- 185917
by:

It fit. Not much else to say. 172420



- 185917
by:

Fit Perfectly 131227



- 185917
by:

Great fit perfect size 130707



- 185917
by:

Everything was easy to install thanks to the Etrailer video on Youtube. I got it all done in about 20 minutes and it all works great. I highly recommend this company. 124477



- 185917
by:

I love this nut. It fit my 2013 Silverado like a glove! Thanks Etrailer! 119857



- 185917
by:

The nut fit perfectly and took less than 15 seconds to install. 109914



- 185917
by:

Threaded right on to post on fuse box to hook up brake controller wire to when installed. 98219



- 185917
by:

Perfect fit. 93384



- 185917
by:

Fit perfectly without wasting time at the hardware store. 90238



- 185917
by:

The most outstanding flange nut ever! It was great! Second only to the 6M flange nut I bought moments before. 62853



- 185917
by:

The most outstanding flange nut ever! It was great! Second to none! 62852



- 185917
by:

Made it easy to install 21246


31
31

Ask the Experts about this Fastenal Accessories and Parts
Do you have a question about this Accessories and Part?


  • What Size Nuts Are Needed to Connect Wires Under Hood for Brake Controller Installation on GMC Yukon
  • As it seems you already know, when installing a trailer brake controller on your 2007 GMC Yukon you will need to locate the two wires under the hood that need to be connected to fully activate the vehicle's tow package. One is the power wire to the brake control and the other is the battery charge line to the 7-Way connector. You will need to attach both of the wires to the threaded studs under the Gray handle at the front of the fuse box. To do this you will need one M6 x 1.0 nut like...
    view full answer...

  • How To Install a 7-Way on a 1996 Chevrolet Suburban
  • The blue brake output and orange 12 volt power wires are already ran on your 1996 Chevrolet Suburban however, as you suspected they are not yet connected. The rearmost point of the wires near the trailer hitch will need to be connected to the 7-way. Once the rearmost point of the wires are secured to the 7-way you will then need to connect the forwardmost point of the wires to the brake controller and 12 volt power. The forwardmost wires will end in a gray connector under the brake booster....
    view full answer...

  • Installation of a Tekonsha P3 Brake Controller # 90195 on a 2011 Chevy Silverado
  • You are correct, you will install the wires from the wiring harness from the Tekonsha P3 Brake Controller # 90195 to the four wires that are attached above your 2011 Chevy Silverado brake pedal. I attached an FAQ article on wiring a brake controller to your vehicle for you to check out also. The # 90195 does not require a level installation, it will adjust to non-level installations and work fine. I attached installation instructions for this product for you to check out also. You...
    view full answer...

  • Thule Replacement M8 T-Bolt for Thule Ladder Rack #853-5715 Nut Recommendation
  • The Replacement M8 T-Bolt # 853-5715 would need a matching M8 nut like the part # 185917 or for a wing nut part # 753-0776.
    view full answer...

  • How Does Prodigy RF Electronic Brake Controller # 90250 Know When To Send Power To Trailer Brake
  • If you have a newer Trailblazer with the tow package there should be a total of 2 wires that you will need to connect; both wires should be red/black with eyelets on the end. One wire is located between the fuse box and driver side fender, the other should be located under the brake master cylinder. On the driver side, remove the fuse box cover, there will be 2 threaded studs that are different sizes, the wires which have different sized eyelets will connect to the corresponding studs using...
    view full answer...

  • M8 Nuts that Fit M8 Thule Bolt # TH919063054
  • For M8 hex nuts to go with the Replacement Socket Head Cap Screw # TH919063054 we have the # 185917.
    view full answer...

  • Are There Connections Under the Hood of a 2008 Chevy Silverado For Brake Controller Install
  • To install a brake controller like the part # 90195 in your 2007 Chevy Silverado there are a few connections under the hood of your truck that need to be made. There is one wire by the truck's fender that will need to get connected to the fuse box and there is another wire beneath the brake booster that needs to get run to the fuse box. Check out the help article I attached that details this process. For nuts you will need M8, # 185917 and the M6, # 185916. I also attached an install...
    view full answer...

  • Recommendation for Activation of Electric Over Hydraulic Trailer Brake with GM OEM Brake Controller
  • I checked out your Tow Brake HD 3000 unit online and found that it is a very good braking system, but that the system is not recommended for use with your GM integrated brake controller, as you have found. I then spoke with Tow Brake and he said that they have used the inline magnet that you are using, but that he feels that your best option is to go with a brake controller that is compatible with an electric over hydraulic system like you have. The Tekonsha P3, # 90195, would be an excellent...
    view full answer...

  • Wiring Instructions for Tekonsha P-3 Trailer Brake Controller on 2011 GMC Sierra 2500HD
  • Yes, I can give you step-by-step instructions to install the Tekonsha P-3 Trailer Brake Controller, part # 90195, in your 2011 GMC Sierra 2500HD. To begin, if you do not have a factory 7-way connector at the the rear of your vehicle, you will need to install Twist-in, 7-Pole, RV-Style Trailer Connector, part # PK11916. Then you will need to mount the brake controller, you will want to mount the brake controller level and where the driver can easily reach it. A typical place to mount...
    view full answer...

  • Trailer Brake Controller Not Working on 2007 Chevrolet Suburban
  • On your 2007 Chevrolet Suburban there are two wires under the hood that have to be connected to make the tow package functional, one is the power wire to the brake control and the other is the battery charge line to the 7 way connector. These wires are both Red/Black with eyelets on them. They are coiled up under the hood and will need to be connected to the under hood fuse box. One of the wires is located between the under hood fuse box and the left (driver) side fender. The other...
    view full answer...

  • How To Bypass Factory Brake Controller on 2007 and Newer Chevy Silverados
  • When installing an aftermarket brake control into a truck that is equipped with a factory Integrated Trailer Brake Control (ITBC), you will have to make the following connections. The 2007 (new body style)-current models have four or five blunt-cut wires under the left side of the instrument panel. These wires are located above your left shin as you are seated in the driver's seat. The wires can be identified by a white label and the color of the wires. The wire colors are (1) Red/Black...
    view full answer...

  • Brake Controller Power Wire Not Receiving Power On 2010 GMC Sierra With All Fuses and Connections
  • It sounds like you still need to make a few connections under the hood of your 2010 GMC Sierra. You will need to locate 2 wires, both wires are red/black with eyelets on the end. One wire is located between the fuse box and driver side fender, the other should be located under the brake master cylinder. On the driver side, remove the fuse box cover, there will be 2 threaded studs that are different sizes, the wires which have different sized eyelets will connect to the corresponding studs...
    view full answer...

  • Wiring a Brake Controller on 2010 Chevy Silverado
  • You are correct, the tow package wiring in your Silverado does not match up color for color with the controller. The red/black tow package wire will connect to the black wire on the controller. The dark blue tow package wire connects to the blue wire on the controller, the light blue tow package wire connects to the red controller wire, and the white tow package wire connects to the white wire on the controller. The orange tow package wire is for an illumination circuit and is NOT needed....
    view full answer...

  • No 12 Volt Power At 7-Way on 2008 Chevrolet Silverado To Charge Trailer Breakaway Battery
  • On a factory 7-Way connector the 12 volt hot wire should be the terminal at the 1 oclock position, looking at the front of the connector. If you test that terminal with a circuit tester and have no power you will want to check under the hood of your 2008 Chevrolet Silverado. You will want to locate the power distribution box on the drivers side of the engine bay. Remove the cover on the distribution box. There will be two post terminals at the front of the box. The right post terminal...
    view full answer...

  • Wiring Pattern for a 7-Way RV Trailer Connector on a 2001 Chevrolet Silverado Without Factory Wiring
  • To install a 7-Way wiring connector at the rear of your 2001 Chevrolet Silverado without a factory 7-Way or a factory 4-Way connector, I recommend using the 7-Pole and 4-Pole Trailer Connector Socket and wiring harness, # HM40975-11998. You can the wire most of the circuits needed to the wiring harness that is located above the spare tire along the driver side frame rail. The wiring above the spare has a yellow wire for the left turn and brakes, dark green wire for the right turn and...
    view full answer...

  • Trailer Dome Lights Do Not Work on a Haulmark Trailer Towed By a 2010 Chevrolet Silverado
  • The first step to troubleshooting your trailer dome lights is to determine how the lights are wired. If your trailer has a 4-way connector, then they will be connected to the running light circuit. If your trailer has a 7-way connector, then the dome lights will be connected to a 12 volt auxiliary power circuit coming from the trailer connector. If your trailer has a 4-way connector and the running lights on the trailer work, then there is an issue with the connection between the dome...
    view full answer...

  • Wiring Diagram to Install Hopkins Proportional Brake Controller in a 2010 Chevy Silverado 1500
  • I have attached a couple links that will more than help you out while installing the Hopkins Proportional Brake Controller # HM47294 on your 2010 Chevy Silverado 1500. The first link is an FAQ article that covers brake controller installation on 2007 - 2011 full size GM trucks. In the article you will find not only a wiring connection chart but also pictures showing you exactly where to locate the specific wires in your vehicle. The article concludes with the final two wires that need to...
    view full answer...

  • Hayes Brake Controller Installation in 2008 Chevrolet Suburban
  • The linked FAQ article on brake controller installation in GM vehicles including your 2008 Suburban indicates that there are two power connections to be made for providing both brake controller operating power and 12V trailer auxiliary power at the 7-way trailer connector. Our experience tells us that the two nuts required are not included by GM and need to be sourced locally or from etrailer. They are M6 nut part # 185916 and M8 part # 185917. The two wires have different-diameter...
    view full answer...

  • How to Wire a 2010 GMC Yukon XL for a Brake Controller
  • Yes, you will need to connect two wires under the hood of your 2011 GMC Yukon XL to wire a brake controller to your vehicles brake controller circuitry. To attach those wires to your vehicle you will need a Zinc Plated Hex Flange Nut - M6, part # 185916, and a Zinc Plated Hex Flange Nut, part # 185917. I attached an FAQ article on how this is done below for you to check out, as well as the video that you watched of the brake controller being installed on a 2011 Chevy Silverado that you...
    view full answer...

  • Troubleshooting No Power to Wire Harness for Trailer Brakes
  • There are a few things you will need to do under the hood of your 2004 Chevy Silverado before you will have power at the wiring harness. You will need to remove the bracket in the corner closest to the driver (see pic step A on the link below that I attached). Next, you will need to remove the top cover of the Accessory Fuse Block. Next, remove the lower cover to the fuses. Next, you will want to locate the blue and red wires that are normally located next to the fuse block on the...
    view full answer...

  • Locating the Brake Control and Battery Charge Wires on a 2007 GMC Yukon Denali
  • The brake control wire you are looking for on your 2007 GMC Yukon Denali will be located between the fuse box and the driver side fender. It may be wrapped up in black electrical tape. Once you have located the wire you will need additional hardware to secure the wires to the studs. I have included links to the two nuts used to secure the wires to the studs. I have included an article and a video that shows the location of the brake control wire and the battery charge wire on your vehicle....
    view full answer...

  • Dexter Electric Over Hydraulic Actuator Does Not Work w/2014 Chevy Silverado Factory Brake Control
  • As you have found out the factory brake controller on your 2014 Chevy Silverado 2500 is not compatible with electric over hydraulic braking systems. You can install a P2 # 90885 which is compatible but the reason you need to run a new blue wire is to avoid getting an error code dash light from the factory controller. Some actuators have an adapter that you could add so that the factory controller will work with actuator. The one that you have though, # K71-651, does not have an adapter...
    view full answer...

  • Interior Trailer Lights Not Working When Connected to a 2011 GMC Sierra Denali
  • The interior dome lights on your trailer likely run off of either a trailer mounted battery or directly off of the 12 volt circuit from the trailer connector (if it uses a 7-Way connector). If they connect to a battery then check to see if the battery is good, needs a charge, or needs to be replaced. To keep a trailer battery charged and maintained I recommend hooking it up to a CTEK battery charger, # CTEK56158, which will charge and recondition a battery. If the lights don't run off...
    view full answer...

  • Trouble Shooting Problems with GM OEM Integrated Brake Controller Performance on a 2008 Chevy 2500
  • Because the 2008 Chevrolet 2500 Duramax has an OEM integrated brake controller, I do not have any information on how many axles the controller can support. It sounds to me like the person at the garage may not be doing his research on their trailer brake control system, but it is possible that the factory system cannot support more than 4 brake assemblies or 2 axles with trailer brakes. If I were in your position, I would contact Chevrolet directly to try and get information about how many...
    view full answer...

  • Power Distribution Stud Nut Sizes for Installing a Brake Controller on a 2007 Chevy Silverado
  • GM does not supply the attaching nuts required to secure the wires to the studs. These can be obtained locally. You will need (1) M6 x 1.0 nut, # 185916 and (1) M8 x 1.25 nut, # 185917. I have attached an FAQ for you that may also help.
    view full answer...

  • No Power to the Brake Controller Wires Under the Dash on 2010 Chevrolet Silverado
  • General Motors quit offering the plug-in type connectors on 2007 and newer full size trucks and SUVs with a factory tow package. These models have four (possibly five) blunt cut wires under the left side of the instrument panel to the left of the steering column. The wires can be identified by a white label and the color of the wires. The wire colors are (1) Red/Black wire, (1) White wire, (1) Light Blue/White wire and (1) Dark Blue wire and possibly (1) Orange wire. There are two wires...
    view full answer...

  • No Power for Trailer Lights on a 7-Way Trailer Connector on a 2011 Chevy Silverado
  • We have an FAQ article that will help with your 2011 Chevy Silverado. I have included some excerpts from it below and I have included a link to it for you. In addition to these steps, you will want to check the vehicle owners manual for the location of any fuses and/or relays associated with the trailer wiring to make sure they are present and working. There are two wires under the hood that have to be connected to make the tow package functional, one is the power wire to the brake control...
    view full answer...

  • 2008 Chevrolet Silverado 2500 12 Volt Trailer Towing Wire Connection Instructions
  • Your 2008 Chevrolet Silverado is set up from the factory with trailer tow wiring, so I agree that wiring power wires from the battery is not the way that things should be done in your case. On the 2008 Chevrolet Silverado there are two wires under the hood that need to be connected to have power to the 7-Way trailer connector at the back of the vehicle and the brake controller wiring under the dash, see photo at right. These wires are connected to the two studs at the power distribution...
    view full answer...

  • Installation of the Tekonsha Prodigy # 90885 On a 2001 Chevrolet Silverado
  • It sounds like you have things going in the right direction. The power distribution post, that has the 30 amp fuse installed closest to it, will provide power to the brake controller at all times. The brake controller is designed to only draw a few milliamps when not in use. A vehicle battery drains faster just sitting than the few milliamp draw of the brake controller so there is no reason to worry about constant power to the brake controller discharging the battery. The blue wire you...
    view full answer...

  • Installing the Prodigy P3 in a 2016 Chevy Silverado 2500 With Factory Brake Controller
  • Your Prodigy P3 # 90195 cannot be installed in your 2016 Chevy Silverado 2500 with a wiring harness. I have linked a help article detailing exactly what you will need to do in order to use the P3 in your Silverado. You will need to find the blunt-cut wires under the instrument panel and above your left shin as you are seated in the driver's seat. They will be connected in the following manner: - GM Wire to Brake Control Wire Function - Red/Black to Black Battery Power - White to White...
    view full answer...


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Info for this part was:

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Photos by:
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Video Edited:
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Expert Research:
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Video Edited:
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Video Edited:
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Video Edited:
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Photos by:
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