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Locknut for Trailer Shackle Bolt - 9/16" Diameter

Locknut for Trailer Shackle Bolt - 9/16" Diameter

Item # TRFA916DLNZ
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TRFA916DLNZ - 9/16 Inch Diameter ABS Fasteners Accessories and Parts
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9/16" Diameter locknut is designed for use with shackle bolt (sold separately). Call 800-298-1624 to order ABS Fasteners accessories and parts part number TRFA916DLNZ or order online at etrailer.com. Free expert support on all ABS Fasteners products. Guaranteed Lowest Price and Fastest Shipping for Locknut for Trailer Shackle Bolt - 9/16" Diameter. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (11)
  • Q & A (2)
  • Videos (1)
  • Photos
  • Why etrailer?

ABS Fasteners Accessories and Parts - TRFA916DLNZ

  • Trailer Leaf Spring Suspension
  • Suspension Nut
  • ABS Fasteners
  • 9/16 Inch Diameter

9/16" Diameter locknut is designed for use with shackle bolt (sold separately).


  • Locknut secures a suspension bolt on your trailer
    • Works with shackle bolt (sold separately)
  • Easy installation with reversible design - thread onto bolt from either side


  • Diameter: 9/16"
  • Threads per inch: 18
  • Quantity: 1 locknut

56FNRH02/3IND 9/16"-18 - Lock Nut

Replaces FA-916DLNZ TruRyde White Zinc Lock Nut

Video of Locknut for Trailer Shackle Bolt - 9/16" Diameter

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

Video Transcript for Review of ABS Fasteners 9/16 Inch Shackle Bolt Locknut - TRFA916DLNZ

Hi there. I'm Michael with etrailer.com. Today, we're gonna take a quick look at this trailer shackle bolt locknut. This locknut is going to secure your suspension bolt on your trailer. It's gonna work with your shackle bolts which are sold separately, such as the three inch long by 9/16 inch diameter shackle bolt. For one and 3/4 inch wide double eye springs that you see on the screen there, you can pick that up here at etrailer.com using the part number that you see on the screen if you are needing one.

But if you already have the shackle bolt, you're just needing the lock nut, this is gonna be a great option for you. It is a 9/16 inch diameter with 18 threads per inch, so it's gonna be very easy to get installed. It's got a reversible design, so either way, you put it on, it will work well for you. So if you are needing a locknut for your trailer shackle bolt, this is the 9/16 inch version. And that's gonna complete our look for today.

Again, I'm Michael with etrailer.com. Thanks for watching..

Customer Reviews

Locknut for Trailer Shackle Bolt - 9/16" Diameter - TRFA916DLNZ

Average Customer Rating:  4.8 out of 5 stars   (11 Customer Reviews)

9/16" Diameter locknut is designed for use with shackle bolt (sold separately).


I have an Econotrailer open deck trailer and these nuts seem to have a different thread pitch than the shackle bolts on the trailer. Since I ordered some bolts with nuts as well (part number TRFA73Z916DLNZ) I just used the new bolts with new nuts.


The original factory package came with the nuts sealed inside if their package, but two of the nuts were standard, not having the ability to lock when installed. I sent a note to eTrailer.com, asking for two replacement of which within a few days they arrived. I thank you eTrailer.com for their quick turnaround. Thanks again Merv L.


Good product


Good quality nuts. Just how I like em!



These folks have quality products and give excellent service... 'nuff said.



FAST< FAST, FAST service





Good price and quality. Good communicat ion.


Ask the Experts about this ABS Fasteners Accessories and Parts

  • Thickest Trailer Suspension Shackle that is 2-1/4 inches Long
    The thickness of the Shackle Strap # TRSL225 that you referenced 3/16 inches. The thickest shackle we offer in the length of 2-1/4 inches is the part # 018-024-01 which is 1/2 inch thick. I know that sounds almost too thick to be true, but I've measured these before to verify. We also have these shackles with bolts as well as part # 018-026-05. Then for a lock nut you'd need # TRFA916DLNZ.
    view full answer...
  • Replacement Shackle Straps For 1999 Ranger Boat Trailer With Tandem Axles
    On your 1999 Ranger boat trailer with tandem axles, I recommend the Replacement Shackle Link with Bolts for Dexter Trailer Suspension Kits # 018-026-05. If instead you want to piece together your system, I recommend using the Locknut - 9/16" Diameter # TRFA916DLNZ, never fail bushings # LC279684, and galvanized strap # 18-11GALV. If you want to use the regular wet bolts, you can use # 126B2. If you want a complete basic kit, you can use the Tandem-Axle Trailer Equalizer Kit for 1-3/4"...
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Mike S
Updated by:
Mike S
Employee Michael B
Installed by:
Michael B

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