Machine screw: M2 x 6 mm pan head.

Part number	Datasheet
Digi-Key: H738-ND	B&F, MPMS 002 0005 PH
Farnell: 1420386	TR fastenings, M2 6 PRSTMC Z100
Mouser: 48SM006	Eagle, 48SM006
RS: 560-530	RS Pro, 560-530

These are used to mount the Micro SD card module in SC131 Pocket Sized RomWBW CP/M Computer.