> For the complete documentation index, see [llms.txt](https://hmb-robotics.gitbook.io/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hmb-robotics.gitbook.io/documentation/bumper-mounts/bumper-mounts-overview/bumper-mount-with-hole.md).

# Bumper Mount with hole

<div><figure><img src="/files/idcnyoqG2mnftbFdefSn" alt="" width="161"><figcaption></figcaption></figure> <figure><img src="/files/ypcNyP1FpgcBRzytkbCS" alt="" width="171"><figcaption></figcaption></figure> <figure><img src="/files/9tJu679t0QcpRqepefWg" alt="" width="293"><figcaption></figcaption></figure> <figure><img src="/files/TCjvDKo15NwnaXtswEbv" alt="" width="103"><figcaption></figcaption></figure></div>

We used a #10-32 x 3.25" Socket head bolt (<https://andymark.com/products/10-32-x-3-25-in-socket-head-cap-screw-1>) going through a 2" MAXTube and a 1/8" bellypan, with a #10-32 nyloc nut (<https://www.mcmaster.com/90631A411/>) screwed in the top to lock the two mount pieces mount in place to the robot. Bolt lengths vary depending on bellypan and robot frame heights.

**STEP (Top section):**

{% file src="/files/3d3Sj6Zzl8DJi9rDoLOg" %}

**STL (Top section):**

{% file src="/files/fc0XKZMyPGLhAC5qNWIb" %}

**STEP (Bottom section):**

{% file src="/files/2gIx8F4nHmf7mX0W4GaE" %}