Necessary Screws for M.2 SSD Install Are Missing (Acer Aspire E15 E5-575-54e8)

I searched everywhere to find the proper way to secure my M.2 SSD card to my Acer Aspire E5-575-5493, using a standoff that is mounted to the motherboard.  What I learned and can confirm is the following:

The motherboard accepts a M2.5 diameter thread, which is how the standoff mounts to the motherboard.  This is the same thread diameter that is used for the three screws that secure the access cover to the back of the laptop.  However, the length of the threaded section at the bottom of the standoff is much shorter than the screws used to secure the access panel.

The standoff accepts a M2.0 diameter thread on its’ top, which is used for the screw that actually secures the M.2 SSD card to the standoff.  This thread length of the M2.0 screw is also very short.  The proper screw came with the SSD card I purchased.

The Acer part number for the standoff, which has been mentioned by others, is 86.GDEN7.002 - Acer Stand-Off SSD-Screw M2.5*1.8-1 (Nylok) D5T 3.7 Steel.  

I could not find this on the Acer site, and frankly searched everywhere, only to find one source:

https://www.ebay.com/itm/Acer-Stand-Off-SSD-Screw-M2-5-1-8-1-Nylok-D5T-3-7-Steel-86-GDEN7-002/401544855586?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

The eBay Seller is CDSMICRO - https://www.ebay.com/usr/cdsmicro?_trksid=p2047675.l2559

I believe this eBay seller’s commercial site is CDSParts.com, and the same standoff can be found there as well:

https://www.cdsparts.com/p-9356-acer-stand-off-ssd-screw-m2518-1-nylok-d5t-37-steel-86gden7002.aspx

I was about the give up on obtaining the appropriate standoff, and instead do what others have done, which is to use a longer M2.5 diameter screw (basically borrow one of the screws used to secure the access panel), and fabricate a small spacer that could be used to keep an appropriate separation between the M.2 SSD and the motherboard.  The length of the access panel screw is actually just about right, and I am sure this would have worked fine, but the actual standoff is the ideal solution (at least for me).

Hopefully, this information is useful to others who may be looking for the same solution.