8169-N-0440 | فواصل مستديرة أماتوم #4-40 × 1-1/2 بوصة | نايلون (100/عبوة)

I needed exact 1-1/2" length standoffs for a tight PCB stack, and these nylon ones fit perfectly without any extra clearance issues. The 100-pack is great to have spares for future projects.

The threads cut cleanly into the nylon when I mounted them, no cross-threading fuss. Exactly the right height for keeping my prototype board lifted off the chassis, and the whole bag of 100 will last me through several builds.

The nylon material feels sturdy enough to hold a small circuit board securely without cracking during installation. I like that the 1-1/2 inch length gives just the right clearance for airflow underneath.