Why Does the Curt 5th Wheel/Gooseneck Custom Wiring Harness Not Use Aluminum Screws?
Published 09/25/2025
Question:
Why doesnt this come with aluminum screws instead of steel ? There would be less of a chance of it comming loose having to use the rubber/plastic s. Aluminum screws to aluminum truck bed.
asked by: James
Expert Reply:
Hey James, welcome back. Galling and low shear strength are why the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds item # C57008 uses stainless steel bolts and rubber well nuts instead of aluminum screws. Stainless steel bolts are high strength and are resistant to corrosion. The rubber well nuts prevent any galvanic corrosion.
I have linked an installation video below so you can see how to get the Curt item # C57008 installed in your 2018 F-150.
(click to enlarge)
Product Page this Question was Asked From
Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds - 7' Long
- Custom Fit Vehicle Wiring
- 5th Wheel and Gooseneck Wiring
- Vehicle End Connector
- 7 Blade
- Plug and Lead
- Plug-In
- Hidden
- CURT
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James
9/25/2025
You show self tapping screws also. Do you still use the insert with them?