What Size Hex Bolt Holds the Safety Cables on the etrailer SD Non-Binding Tow Bar?
Updated 09/29/2025 | Published 05/07/2025
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Question:
What size hex bolt hold the safety cables in place on etrailer SD Non-Binding Tow Bar Part Number: e47ZR? Rather than add extensions, I wanted to replace with slightly longer cables, but my hex keys dont fit the cable holder bolt. Thanks a lot.
asked by: Tom E
Expert Reply:
Hey Tom, welcome back! The etrailer SD Non-Binding Tow Bar item # e47ZR uses 9/64" hex bolts to hold on the safety cables. To replace yours with longer ones, I recommend the RoadMaster 68" Single Hook, Coiled Safety Cables - 6,000lbs Item # RM-643. These will be 14" longer and any excess will coil up to prevent dragging.
If you have any additional questions, go ahead and throw them into the comment box below and I'll be happy to help you.
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Product Page this Question was Asked From
etrailer SD Non-Binding Tow Bar for Blue Ox and Curt Base Plates - RV Mount - 2" Hitch - 6K lbs
- Tow Bar
- Hitch Mount
- Telescoping - Non-Binding
- Steel
- 6000 lbs
- Fits Blue Ox Base Plates
- Fits Curt Base Plates
- Stores on RV
- Cables Included
- etrailer
more information >
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Jerred H.
9/29/2025
Hey Tom, did the RoadMaster 68 Single Hook, Coiled Safety Cables work out for your tow bar setup? I'm curious to know if they fit well, as it could help others looking to make similar upgrades.