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Zinc Plated Hex Flange Nut - M8

Zinc Plated Hex Flange Nut - M8

Item # 185917
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185917 - Hardware Fastenal Accessories and Parts
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  • Reviews (37)
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Fastenal Accessories and Parts - 185917

  • Trailer Brake Controller
  • Hardware
  • Fastenal


  • 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   (37 Customer Reviews)


- 185917
by:

Have to power post on my truck and after installing my break controller I had a hard time finding a but that would fit. This worked out perfectly. 855656



- 185917
by:

Fits perfect also has good value. 818731



- 185917
by:

As advertised! 739438



- 185917
by:

As described 723163



- 185917
by:

Nice product and very happy with it. took a little time to to install but no problems with it. 722398



- 185917
by:

Its a nut...it works 698483



- 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


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Ask the Experts about this Fastenal Accessories and Parts

  • 2014 Silverado Power Distribution Block Stud Size on Power Distribution Block
    The posts on the power distribution block of your 2014 Chevy Silverado 1500 are M6 like the part # 185916 and M8 like part # 185917. The M8 is for the 12 volt power supply and the m6 is for the brake controller power supply.
    view full answer...
  • How to Get 12 Volt Power For Installation of a Prodigy Brake Controller on a 2011 GMC Yukon Denali
    The wiring to power the brake controller on your 2011 GMC Yukon Denali is under the hood on the driver side next to the fender well. Remove the cover for the power distribution box and you will find the wire taped to a harness between the fender well and power distribution box. We have an FAQ article that details this, see link, and I added a photo that I took of the wire locations on a GM pickup. You may also have to connect the 12 volt power wire for your 7-Way trailer connector. Our...
    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...
  • 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...
  • 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...
  • Recommend Brake Controller To Use With Hydrastar Electric Over Hydraulic Unit and 2007 GMC 3500HD
    The item that you selected, Tekonsha P3 Trailer Brake Controller, part # 90195, will work for electric over hydraulic unit, like the Hydrastar. I would recommend using the Tekonsha P3 Brake Controller as it has digital display and can troubleshoot problems. The Tekonsha Voyager Brake Controller, # 39510 and older model Tekonsha Voyager Brake Controllers are not designed to be used with electric over hydraulic brake systems. For installation of an aftermarket brake controller, you...
    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...
  • Instructions To Bypass Integrated Brake Controller In 2011 Chevy Silverado With Red Arc Tow-Pro
    Under the dash of your 2011 Chevy Silverado to the left of the steering column is a bundle of bluntly cut wires. These wires will connect to the main unit of the Redarc part # 331-EBRH-ACCV2 just like a traditional style brake controller. The wire colors are Red/Black wire, White wire, Light Blue/White wire and Dark Blue wire, possibly Orange wire. You can disregard the dark blue and orange wires since they are not needed for a brake controller installation. Connect the brake control...
    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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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 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...
  • 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...
  • 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...
  • 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...
  • 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, # CTEK56353, which will charge and recondition a battery. If the lights don't run off...
    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...
  • 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...
  • Prodigy RF Brake Controller Flashes NC and is Unable to Pair Hand Held Unit on a 2010 GMC Sierra
    I spoke with my contact at Tekonsha about the problem you are having with the Prodigy RF Brake Controller, # 90250. He has run into this issue before and there is a possible solution. Since 2007 GM still provided the necessary wiring for brake controllers on tow packages but they did not always make the connections complete in many cases. The end result is that under the hood, you will have to make some connections to make the tow package functional. There are two connections that need...
    view full answer...
  • Troubleshooting Tekonsha POD PowerTrac Brake Controller Installed on 2007 Silverado LTZ
    It sounds to me as if your controller is not getting sufficient 12-volt power to operate correctly. Try using a circuit tester like part # 40376 on the black power supply wire feeding the brake controller. I am guessing you will not see any power on this wire. The flickering you describe is from the slight amount of power reaching the controller through the red wire that serves as the input to the controller that tells it when the vehicle brakes are being applied. I suspect that the...
    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...
  • Brake Controller Wiring Instructions for a 2011 Chevrolet Silverado Z82
    The Z82 is a trailer towing package installed by GM the manufacturer of the 2011 Chevrolet, Silverado. If you are installing a brake controller on the 2011 Chevrolet, Silverado, and it does not have a factory integrated brake controller, you will only need a brake controller like the Tekonsha Prodigy, item # 90885, that you mentioned. We have a video, see link, that details this installation and shows where to find the wires that are needed to splice to the wires on the brake controller. If...
    view full answer...
  • No Brake Power to Trailer Brakes on a 2006 Chevrolet Silverado Without Factory Tow Package Wiring
    Installation of a brake controller on the 2006 Chevrolet Silverado requires using the Universal Brake Control Wiring Adapter, item # 3015-S, making some connections under the hood and running a wire to the rear of the vehicle to the trailer connector. We have a informational article that details how to install a brake controller on your vehicle, see link. Start at the section labeled Vehicles without Factory Installed 7-way and go to step two to begin. In photo D you will see a blue...
    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...

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