• Type: Micro screws (typically pentalobe or Torx, depending on position)

• Material: Stainless steel or coated steel for durability and corrosion resistance

• Size: Extremely small (usually M1.2–M1.4 diameter, with lengths around 1.2 mm to 2.0 mm)

• Head Style: Low-profile flat or slightly rounded head to sit flush with the keyboard frame

• Drive Type: Commonly Torx T5 or T3, though some internal Apple components may use proprietary heads

• Color/Finish: Black or silver (matches internal components)

• Purpose: Secure the keyboard and sometimes the backlight layer to the aluminum top case

• Quantity: Dozens are used (Apple typically uses many screws evenly distributed for stability)

Additional Notes:

• These screws are not interchangeable with standard laptop screws due to their precise size and threading.

• Removing or installing them requires a precision screwdriver set.

Because of their tiny size, they are easy to strip or lose, so careful handling is important.

Compatible with MacBook Pro 13″ Unibody A1278 Mid 2009 to Mid 2012 only
– For MacBookPro5,5 Mid 2009: MB990LL/A (2.26 GHz Core 2 Duo)
– For MacBookPro5,5 Mid 2009: MB991LL/A (2.53 GHz Core 2 Duo)
– For MacBookPro7,1 Mid 2010: MC374LL/A (2.4 GHz Core 2 Duo)
– For MacBookPro7,1 Mid 2010: MC375LL/A (2.66 GHz Core 2 Duo)
– For MacBookPro8,1 Early 2011: MC700LL/A (2.3 GHz Core i5)
– For MacBookPro8,1 Early 2011: MC724LL/A (2.7 GHz Core i7)
– For MacBookPro8,1 Late 2011: MD313LL/A (2.4 GHz Core i5)
– For MacBookPro8,1 Late 2011: MD314LL/A (2.8 GHz Core i7)
– For MacBookPro9,2 Mid 2012: MD101LL/A (2.5 GHz Core i5)
– For MacBookPro9,2 Mid 2012: MD102LL/A (2.9 GHz Core i7)

Identifying Numbers:
– PPN:604-2948
– EMC Number :EMC 2326 or 2351 or 2419 or 2555 or 2554

A1278 A1286 A1297 A1465 A1466 A1398 A1502