Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
This hardware kit provides the correct fasteners for mounting 9K and 10K General Duty brake backing plates to the axle brake flange. Each kit contains the proper bolt, lock washer, and hex nut used for secure backing plate installation.
A standard 4-bolt brake backing plate requires four kits for complete installation.
Compatible with 12.25 x 3.375 inch 10K General Duty brake assemblies. This hardware kit does not fit Heavy Duty brake assemblies.
Trailer brake backing plates mount directly to the axle brake flange using high-strength hardware designed to withstand vibration and braking forces. Proper mounting hardware ensures the brake assembly remains secure and aligned with the hub and drum.
General Duty 10K brake assemblies typically use a 4 bolt flange mounting pattern. Each bolt must be tightened evenly to ensure the brake backing plate sits flush against the axle flange.
Always verify whether your brake assembly is General Duty (GD) or Heavy Duty (HD) before ordering hardware, as these systems use different mounting bolt sizes and specifications.
| Component | Part Number | Details |
| Hex Nut | 6-17 | 7/16-20 zinc plated |
| Lock Washer | 5-8 | 7/16 inch split lock washer |
| Hex Cap Screw | 007-116-00 | 7/16-20 x 1.75 inch long, 1 inch thread length, zinc plated |
Important: This kit fits General Duty 10K brake assemblies only. It will not fit Heavy Duty brake assemblies.
Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
“Got me the axle I needed right away with custom spring perch setting.”
“Had a trailer made to my needs.ken was able to get it done and at a price that was very acceptable.i have bought parts there for 2 other trailers and always in stock”
“Quality work. Staff is polite. Great job welding a project for me. Didn't even want to charge me, so I bought them a case of Corona. They were ecstatic. I ever need a welding or like that R&P Carriages is #1 !!!!!”
Need help matching a part? Send us photos, part numbers and measurements. We can help narrow it down before you order.
