Replacement Screw and Nut for Thule ProBar Endcaps
Updated 12/01/2025 | Published 11/07/2025
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Question:
I received the Thule end cap replacement. It fits perfectly but a screw and bolt to secure it to the rack wasn’t provided with it. Can you tell me what size nut and bolt I need to secure it? I’ve searched through the hardware trays at Lowes and my local hardware store but nothing I’ve bought so far works. Thanks
asked by: Tom L
Expert Reply:
Hey Tom! You need the Replacement Hexagonal Screw K6S for Thule ProBar Evo Roof Rack Crossbars # TH39JH along with the Replacement M6 Square Nut for Thule ProBar Evo # TH87JH. The screw size is 6 mm diameter x 1 mm thread pitch.
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Product Page this Question was Asked From
Replacement Endcap for Thule ProBar Evo Roof Rack Load Bars - Right
- Accessories and Parts
- Roof Rack
- End Caps
- 1 Pack
- Thule
more information >
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Robin H.
12/1/2025
Hey Tom, did the 6 mm screw and M6 square nut secure your Thule end cap the way you needed? Knowing how that hardware fit could help others trying to finish their ProBar Evo setup.