What is the name of this screw? (from HP ProLiant quick-deploy rail kits) [closed]

I need the name of the screw for the HP quick deploy rail kit. The screw clicks into the square holes of the rack. It is a Gen4 Rail kit but the screw is like the Gen8 Rail kit ones. I called HP support, but they couldn't really help me. Unfortunately the rack manual does not name this screw either.

After googling a while, I found the compatible "Thumb Style Rack Screws". It would do the job but isn't exactly what I am looking for.

So, what is the name of the pictured screw.

The photo you've posted doesn't provide a clear picture of what you're doing or need. You appear to require the four guide pins that sit on the inside face of the quick-deploy rail kit. There are EIGHT per rail arm (for 2U and bigger servers. FOUR per arm on 1U systems). The only reason these would ever be removed is if the rails were installed in a 4-post threaded round-hole rack.

You haven't given good context on what you're trying to do, so that's why you haven't had good answers... It leaves us guessing... Why are the pins missing?

Scenarios:

• You broke(?) the existing pins and you need one or more. Call your server vendor and describe the part you're looking for.
• You're missing a lot of the screws because someone removed them. Buy some used rail kits or go back to whoever sold you the equipment.

You can refer to these as "guide pins" and obtain them from HP, an HP vendor, or a used-server parts dealer if you need them.

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Edit: They're definitely called "Guide Pins". See the HP video.

Such custom screws don't have a standard name. The manufacturer may or may not have it's own name for it (normally not) but only they can tell you. Regardless of whether it has a name or not, what you really need is a part number, as only that can uniquely identify the item. Either way, you need to talk to HP about this.