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MAT

#42 Spindle with Integrated Flange – For 5.2K–7K Axles | MT
SKU: 57SPDL-42
$35.00 USD $35.00 USD $46.00 USD
Sale 23.91% $11.00 USD (23.91%)
Shipping calculated at checkout.
In stock
Description

This #42 spindle with integrated brake flange is engineered for use with 5,200–7,000 lb trailer axles. Featuring a weld-on design and a built-in 5-bolt brake flange, it offers dependable support for brake assemblies and ensures consistent axle performance under heavy loads.

Detailed Information:
Spindle Capacity 3,500 lbs (per spindle)
Stub Diameter 2-1/4"
Overall Length 11"
Brake Flange 5-bolt integrated
Lubrication Type Grease only
Fitting:

Compatible with 5.2K to 7K round trailer axles. Designed for grease-lubricated hubs only. Features a welded-on 5-bolt flange for quick brake assembly mounting. Requires two spindles per axle.

Features:
  • Heavy-Duty Design: Built to endure high-load towing with maximum reliability.
  • Integrated Brake Flange: 5-bolt pattern allows for simple and secure brake installation.
  • Precision Machined: Ensures smooth hub rotation and proper bearing fitment.
  • Grease-Optimized: Specifically designed for grease-filled hubs, not compatible with oil bath systems.
  • Universal Application: Fits a range of trailer types including equipment, cargo, and utility trailers.
Interchangeable Part Numbers:
  • TRU37FR
  • 66-42LZ
Product Overview:

The #42 Spindle with Integrated Flange – For 5.2K–7K Axles | MT is a high-strength spindle ideal for demanding trailer builds. It combines a precision-machined surface with an integrated 5-bolt brake flange and durable weld-on installation. Compatible with standard grease-lubricated hubs, this spindle delivers reliable braking, smooth operation, and long-term performance in various trailer applications.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
#42 Spindle with Integrated Flange – For 5.2K–7K Axles | MT

Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
0%
(0)
0%
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0%
(0)
I
Ivan Petrović
Smooth Operation, No Binding

Hub spins freely with zero binding. The precision machining really shows. I’ve had cheaper spindles that needed reaming—this one was ready out of the box.

T
Tome Todari
Durable and Ready to Use

No extra machining or grinding needed. The weld pad is clean and flat. I appreciate that the flange is already attached—saved me time and ensured consistent bolt pattern alignment.

S
Sancho Studholme
Good Quality, But Verify Alignment

Welded it in and had to tweak the hub alignment slightly. Probably due to frame warp, not the spindle. Once adjusted, bearings roll smoothly and brakes engage evenly.

K
Kayne Fillary
Slight Adjustment Needed During Welding

Had to clamp and pre-align carefully during welding to avoid minor stress warp. Once set, brake assembly mounted without issue. Solid spindle for the price.

I
Ivan Popov
Worth Every Penny for DIYers

If you're building or repairing a trailer, this spindle saves time and ensures compatibility. Integrated flange is a game-changer. Strong weld zone and clean finish.

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