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Brake Mounting Bolt for 7" and 10" Brake Assemblies

Brake Mounting Bolt for 7" and 10" Brake Assemblies

Item # 7-75
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Brake Mounting Bolt for 7" and 10" Brake Assemblies 7 Inch,10 Inch 7-75
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Redline Accessories and Parts - 7-75

  • Trailer Brakes
  • Electric Drum Brakes
  • Hydraulic Drum Brakes
  • Hardware
  • Mounting Bolts
  • Redline
  • 7 Inch
  • 10 Inch

Brake Mounting Bolt for 7" and 10" Brake Assemblies

  • Length: 1-1/4"
  • Bolt Size: 7/16"-20

Note:Many replacement brake assemblies already include the mounting bolts.

Video of Brake Mounting Bolt for 7" and 10" Brake Assemblies

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Redline Trailer Brakes 7-75 Review

Today we're going to review part number 7-75. This is the Brake Mounting Bolt for 7" and 10" Brake Assemblies. This bolt is used to attach your brake assembly to your trailer. This is a grade 5 bolt, as you can see it has the three indicator marks, that means a grade 5. The overall length of this bolt from the top of the hex head to the very end is a 11/2", the threaded portion is going to be a 1 1/4", the bolt size is 7/16" diameter by 20 size, the 20 means 20 threads per inch. This needs to be used with the lock washer, part number 5-8.

We also sell separately the mounting nut, which is part number 6-17, that is used to go on to the bolt itself, but those pieces are all sold separately. The head size on this bolt is going to be . I have a socket here which is 5/8, and that is what fits the head size on this bolt. That should do it for the review on part number 7-75, this is the Brake Mounting Bolt for 7" and 10" Brake Assemblies.

Customer Reviews

Brake Mounting Bolt for 7" and 10" Brake Assemblies - 7-75

Average Customer Rating:  4.7 out of 5 stars   (39 Customer Reviews)


I would like to thank everyone for the great service on the brake products I purchased, everything worked as advertised. Very quick on the delivery time!!!! I would definitely use the company again for future projects. .... Thanks again for a great product line and availability. ...

The products that were purchased are doing a great job, not a stitch of problems. Have another trailer to build for my motorcycle and will be going back for more stuff. ... all is good.
jim - 08/31/2016


5 years ago I purchased a disc brake kit for my 24' boat trailer. It had the standard rusted out drum kits so I thought to make the move to disc, as I do my boating in the saltchuck. The install went super easy and it has given me great service.
So, I have a new trailer that needs a full rebuild of the brakes. I started on the website, and as I was assembling my order, a couple of questions come up. So I called Customer Support. Katie was the one who answered the phone and walked me through what was needed, confirmed the differences in a couple of the components that were not explained on the website. Even tracked down one of the technical guys to explain the backup valve functionality. She then walked through the parts listing to confirm, so when it arrives, there would be no surprises or shortages.
Here next step was to confirm shipping dates. She checked stock on all the parts, a couple were back ordered, so she confirmed when they were to arrive, so the 1 shipment would be complete. As I am in Canada, coordinated with the broker to get the parts to me.
At the end of the call, I had the pricing, which was AWESOME, confirmation of shipping dates and contact info, if I had questions or concerns.
The day she said it would arrive at the broker, it DID! She followed up with the status!
Looking forward to getting the system installed next week!
Thanks again for great service and having knowledgeable folks to work with!


Bolts are well packed with nuts not needed backing plate has built in studs but can always use 7/16 bolts and nuts Brake assembiles are all assembiled and its a no brainer to install Very pleased with these products

works great
Tony l - 08/12/2017


Exact fit backing plates with brakes.very fast shipping.easy great.was told I need to order bolts also but they came pressed in backing plates already so I have an extra set of do need nuts and washers tho.


Simply the best. Best price, best quality and easy to install. Also there are great videos etrailer has for installation of most of their parts. Dont waste your time shopping around. These gutd have the best price. Thanks guys


The 7-75 bolts are an excellent replacement to mount the brakes to the 4-bolt flange on my 1997 Coleman Fleetwood Bayports popup camper that I am close to finishing a restoration process on. They fit perfectly! Very happy to purchase an excellent product from the fastest shipper I have ever come across. I am blown away by the professionalism with this company!


Hydraulic trailer drum brakes. Received within a few days. Easy to install, not that complicated. Needed a second person to help bleed the brakes.


Excellent quality part. Exact replacement part to complete my brake job. I actually placed my order for just the brake assemblies and etrailer advised purchasing the bolts,washers and nuts. Great advice. Thanks.


The brake assemblies and bolts arrived yesterday and today from UPS. Apparently, the two boxes got separated by UPS. Everything looked good, however, I was surprised that the three left hand brake assemblies did not have LEFT stamped on them. Not a big problem, but thought you might like the info. Ray


All items came as advertised, and very quickly. The bolts for the mounting plates were not needed, as the plates came with installed fasteners. Everything went together, as it should. Good pricing!


I got extremely helpful information from Carla regarding brake parts for my trailer. She knows what she is doing. She helped me get what I needed. Plus I saved a lot of money compared to buying the same product at a local Redneck stored. About eighty dollars. I highly recommend etrailer. Mike


The ordered items fit perfect on my old trailer. And the packet arrived right on time. Pricing is extremely affordable. It was a great pleasure to do business with


Direct replacement bolt to attach the caliper mounting bracket to the axle


Great service from Pat C! Answered all my questions and assisted me with determining the correct parts for my project. Shipping was fast and the whole process was seamless!


Everything works well. I will definitely order form etrailer again when I need stuff.


Ordered these as extra's in case I needed them. Found out I did not need them because the brakes already had the mounting bolts. Also found out I order the wrong size and these would not work. Will keep anyway. Always need extra bolts for something.


Did not need. Studs were already in brake fixture. But are a good product.


Great products, great prices and great service. what more can I say?


Top notch products and quick delivery at a reasonable shipping price, unlike so many online sellers these days who inflate the shipping charges to boost profits!!! Highly recommended!!!


I will be installing at the
end of the month and will let you know how it all works out then.



right bolts for the job. No need to go looking for a fit at a hardware store


Worked great to mount the drum brakes.


It's just a bolt.... but you don't need them on the 7" replacement brakes since they come with the pressed-in bolt studs already in place.


All parts are doing well. There have been no issues with anything.


what can you say about a bolt. I can't make one so I guess it's a great thing you can buy one already made.

Show More Reviews

See what our Experts say about this Redline Accessories and Parts

  • Grade of Bolt for 10" Brake Mounting Hardware Kit
    The Mounting Bolt # 7-75 that comes with the Kit # BRKH10A for 10" brake assemblies is a grade 5 bolt.
    view full answer...
  • What is Brake mounting Bolt # 7-75 Made Of
    The brake mounting bolt # 7-75 is just made of steel. If you can find a galvanized or stainless bolt with the same threads (bolt size is 7/16-20 and length is 1-1/4 inches) you could use it. Check a local hardware store. Bring one of the old bolts with you so you are sure to get a good match. If you go with these steel bolts the matching nut is # 6-17 and the lockwasher is # 5-8.
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  • What Size Nuts and Studs are Used to Mount 7 and 10 Inch Trailer Brake Assemblies
    The studs on the Dexter 7 inc brake assembly, part # 23-47, are 1-1/4 inch long with 7/16 - 20 threads. Brake Assembly mounting bolt, part # 7-75, is 1-1/4 inch long with 7/16 - 20 threads. The nuts, part # 6-17, are also 7/16 - 20. This size is pretty standardized as far as 7 inch and 10 inch brake assemblies.
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  • Recommended Replacement Hydraulic Drum Brakes for Tandem Axle Trailer
    Selecting correct hydraulic drum brake assemblies for your tandem axle trailer requires matching brakes to the axle capacity, the size of your hub/drums (please see linked photo) and to the type of brake flange on your spindles. The linked page will show you all hydraulic drum brakes we offer which are suited to axle capacities from 2500 to 15,000-lbs. Usually a 2500-lb axle will have 7 x 1-3/4-inch brakes but if your trailer has 10-inch hubs it could be that the axles are rated higher...
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    Image 1 for
  • Comparison of Dexter and etrailer 7 Inch Brake Assemblies for Trailers with 2,000 Pound Axles
    The Dexter # 23-47-48 and etrailer # AKEBRK-2 brake assemblies are just that. The same part made by two different companies. They're both 7 inch brake assemblies for 2,000 pound axles. Both the left and right hand brakes are included and labeled to make it easier to install. The etrailer brand does include the mounting bolts where the Dexter does not. For mounting bolts use # 7-75. Neither of them include the Mounting Hardware # BRKH7.
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  • Correct Mounting Bolts and Hardware for Galvanized 10 Inch Marine Trailer Brake Assembly 40716
    The 10 inch brake assembly, # 40716, does not come with mounting bolts. You would need bolts like # 7-75 to mount the assembly to the brake mounting flange. For matching washers, use # 5-8 and for nuts # 6-17.
    view full answer...
  • Mounting Hardware Recommendations for a Brake Assembly # 18787
    You will need to provide the mounting hardware to install the Brake Assembly # 18787. For bolts you will want Brake Mounting Bolt # 7-75 For locking washers you will want a Lockwasher for Brake Mounting Bolt # 5-8 For nuts you will want a Nut for Brake Mounting Bolt # 6-17 I also attached a video of a brake assembly being installed for you to check out also.
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  • Kodiak Disc Brake Kit Recommendation for a Dexter D52-8 Axle
    Your current brake mounting flange hardware would work to install the mounting flanges of the Kodiak Disc Brake Kit # K2HR712E. The bolt length should be just fine from your mounting flanges. We have installed these kits on several trailer here and have never had to get longer bolts for the flanges. This kit will also fit the spindle you have on your Dexter D52-8 axle. The ID number for your axle means that it is a Dexter 5,200 lb axle with a 8 lug bolt pattern.
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  • Replacement Hydraulic Drum Brakes for a 1999 Seadoo Trailer
    Check the mounting pattern of the brakes you have now. The Demco brakes, # 40715, mount on a 4 bolt mounting flange with the holes 4 inches apart on center side to side. The surface of the drum where the pads tough is likely to be 2-1/4 inches, especially if you have 13 to 15 inch wheels. In the 10 inch hydraulic brakes you are pretty much limited to 10 x 2-1/4 so its a safe bet that these are correct. The matching left hand side brake is # 40716. If you need additional hardware use #...
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  • Availability of Electric Drum Brake Assemblies Like # 23-468 Without Integrated Mounting Bolts
    All of the electric drum brake assemblies we offer in the 10 x 2-1/4-inch size that are suitable for 3500-lb axles have mounting bolts installed. We do offer separate brake mounting bolts in a 7/16-inch size with 20 threads-per-inch, part # 7-75. We also offer washers # 5-8 and nuts # 6-17.
    view full answer...
  • Hardware for Attaching Brake Flanges of Titan Disk Brake Kit # T4843800
    The hardware needed for securing the brake flanges of the Titan Disk Brake Kit # T4843800 are not included as typically the axle has them already. If not we have the part # 7-75 which would be the correct bolt size. For a lockwasher you'd want part # 5-8 and if you do need a nut for the backside of the bolt part # 6-17. With the P3 you would not need to use the adapter part # T4846000. It is designed to work with the EOH brakes without the need for an adapter.
    view full answer...
  • Are Brake Flange Mounting Bolts Included with the Kodiak Disc Brake Kit # K2HR35D
    We do have some hardware that you can use, but the 4 bolts included with the Kodiak Disc Brake Kit # K2HR35D are used for mounting the calipers to the brake mounting flange. To install the brake mounting flange you can use the Brake Mounting Bolt # 7-75 and the Brake Mounting Hardware Kit # BIK-00
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  • Kodiak Caliper Mounting Brackets Replacement Hardware Size
    The appropriate bolts for use on the Kodiak Replacement Mounting Bracket # KCBM10HRD are bolt # 7-75 which are 20 threads per inch. These are grade 5 bolts that are 7/16" x 1-1/4" long. The corresponding nuts are # 6-17 and the lock washers to use are # 5-8.
    view full answer...
  • Correct Mounting Bracket Bolts for Kodiak Disc Brake Kit
    You are correct, the bolts for the mounting bracket are not included with the Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Dacromet and KodaGuard - 3,500 lbs # K2R35DKG. What you need is the Brake Mounting Bolt for 7" and 10" Brake Assemblies # 7-75. Along with the bolts you will also want the Mounting Nut for 7" and 10" Brake Assemblies - 7/16" Diameter - Zinc Plated # 6-17 and the Lock Washer for Brake Mounting Bolt for 7" and 10" Brake Assemblies - 7/16" Diameter # 5-8.
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  • Titan Brake Assembly Free Back or Universal Difference and Installation, Hardware and Flanges
    The difference between the Titan Galphorite Uni-Servo Hydraulic Trailer Brake Assembly part # T4445300, and the Titan Galphorite Free-Backing Hydraulic Trailer Brake Assembly part # T4423500, is that that part # T4423500 is a Free-Backing brake assembly. It will not apply brake pressure when the trailer is in reverse. So which brake assembly to choose is your choice on whether you want to have brakes on the trailer while in reverse, the part # T4445400, will allow you to have brakes in...
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  • Brake Assembly for Use with Dexter Galvanized Trailer Hub and Drum # 8-247-50UC3
    Since your boat and trailer will be used in salt water a galvanized hub/drum is a good idea to give you some corrosion protection. With this hub you can use Demco Galvanized Free Backing Hydraulic Drum Brake Assembly # 40716 (left) and # 40715 (right). These are suitable for a 3500-lb axle and a 4-on-4-inch brake flange mounting pattern. I have linked an installation video for your reference. Even when using galvanized components, it is a good idea to rinse the trailer with fresh water...
    view full answer...
  • Replacement Mounting Bracket and Bolts for Kodiak 3.5K Trailer Disc Brake Kit
    The mounting bracket for the 3.5K Kodiak disc brake kits is # KCMB10HRD. For the bolts to mount the bracket to the brake mounting flange use 4 of # 7-75 per bracket. the matching nut is # 6-17 and the lock washer is # 5-8.
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  • Recommended Hub And Drum for Electric Brakes With 4 On 4 Bolt Pattern For 1973 Scamp Trailer
    The hub we offer that will work with electric brakes and has a 4 on 4 bolt pattern, is part # 8-173-16UC3. You are correct that this hub and drum will only work with 7 inch x 1-1/4 inch brakes. The bearings, races, and seals are included with this assembly. I have attached a product review video for this hub/drum you can check out. The electric brakes that will work with this drum is designed for axles rated up to 2,000 lbs. The brakes have a 4 bolt mounting flange. For the right hand(passenger...
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  • Converting Existing Hydraulic Brake System to Electric on Pop-Up Camper
    The Dexter Hub/ Drum you mentioned, part # 8-173-16UC3 would be a proper replacement for you as long as the inner and outer bearings in your existing hubs are # L44649, the grease seal is # 10-9 and the 4-on-4 bolt pattern matches up with your existing hubs. Your existing bearings and grease seals should have reference numbers stamped on them, make sure the numbers on the existing parts match those of the replacements. You will also need electric brake assemblies, part # 23-47 for the...
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  • Parts Needed to Install Electric Brakes On 1995 Coleman Destiny Royale Trailer
    To make sure that you get the correct parts, I would need to know the inner and outer bearing numbers stamped into the metal of the bearings. There are different 5 lug bolt patterns. Use the FAQ I have linked to measure for bolt pattern so you can get the correct hub and drum assemblies. If you do not have EZ Lube axles, you will not need EZ lube hub and drum assemblies. If you do have L44649 inner and outer bearings and the seal has a 1.987 outer diameter and 1.5 inch inner diameter,...
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  • Replacement Parts Needed for the Titan Hydraulic Brake Kit # T1878800-700
    We do carry the following parts for the Titan Hydraulic Brake Kit # T1878800-700 that you referenced: Uni-Servo Wheel Cylinder RH - # T0977600 Uni-Servo Wheel Cylinder LH - # T0977700 Adjuster Spring - # 046-083-01 Shoe Return Spring - # BP07-105 As well as the mounting bolt # 7-75, lock washer # 5-8, and nut # 6-17 for the assemblies. If there are any other pieces that need to be replaced then it would be easier just to replace the brake assemblies as a whole. a lot of times this is...
    view full answer...
  • Comparing Different Hydraulic Trailer Brakes for Boat Trailer
    Essentially yes, all of them will work for your trailer assuming you have 3,500 pound axles and a 4 bolt mounting flange. However, there are some differences between the brake assemblies you mentioned. The # AKFBBRK-35 are free-backing brakes, meaning they will not engage when reversing with your trailer. If your trailer has a reverse lockout on it then this feature is not necessary. They're coated with an e-coat used for corrosion resistance. The Demco brakes # 40716-15 are galvanized...
    view full answer...
  • Does the Demco Hydraulic Drum Brake Assembly Come With the Drum?
    I do have a solution for you but the answer to your question is no, the Demco Hydraulic Drum 3,500 lbs - 10" Brake Assembly # DMSB24429M is just the brake assembly without the drum. Keep in mind that when selecting a brake assembly and hubs that you make sure they will have the same weight capacity that your axle has. You will want to make sure that whichever brake assembly you choose that you get the Right Hand side as well, in this case it would be the Hydraulic Drum Brake part # DMSB24428M. I...
    view full answer...

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