How to Measure the Replacement Carriage Bolt - M6 x 75mm
Updated 09/02/2025 | Published 06/18/2025
Question:
Where are these measured from? The top of the head, just under the head, or just under the square measuring only the threads?
asked by: Martin T
0
75mm Bolt
(click to enlarge)
(click to enlarge)
Expert Reply:
Hey Martin, thanks for the picture. The 75mm of the Replacement Carriage Bolt item # TH915-0675-11 is measured from from where the shank meets the head to the very tip of the fastener. Basically, the insertable portion that threads into something. The bolt in your picture would be 75mm long.
The Replacement Carriage Bolt item # TH915-0675-11 is designed for Thule roof boxes. Are you needing to replace a bolt in a roof box and if so which one?
expert reply by:
Jerred H
0
Product Page this Question was Asked From
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Jerred H.
9/2/2025
Hey Martin, did the explanation about the carriage bolt measurement help with your roof box setup? If you’re still working on it, I’m happy to help.