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Where can I find the bottom case screws with the shoulders on them

Hello, I have a mid 2012 MBP 13” A1278 computer, and I am missing two the case screws that have shoulders on them, as this computer requires a total of 4 screws with shoulders on them.

I looked on the ifixit store and apparently there is no mention of screws with shoulders on them.

MacBook Pro Unibody Lower Case Screw Set

However when I am looking at one of the teardowns for the 13” MBP A1278 mid 2012 there is clear picture describing three different types of screws.

MacBook Pro 13" Unibody Mid 2012 Logic Board Replacement

crwdns2886500:0Replace a stripped or missing screw securing the lower case of most Unibody model MacBook Pro laptops. The excluded models are the Late 2008 and Early 2009 15" MacBook Pro Unibody. These models have a separate battery door on the lower case. This set includes only the screws for the lower case.crwdne2886500:0

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MacBook Pro Unibody Lower Case Screw Set

$9.99

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