ST2.6 self-tapping screws

sheet-metal (ISO 1478)

3 documented uses, taken from manufacturer catalogs, service manuals and teardowns.

Pilot hole

2.2-2.4 mm in 0.5-1.0 mm steel

Too tight and the head snaps or the boss splits; too loose and the thread strips on the first removal.

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Often confused with M2.5; ISO thread pitch is 0.9 mm.
Most TV, appliance, HVAC and power-tool service documents list only a driver type or a part number, never a thread size - so a screw kit sold as 'fits brand X' is usually a seller's guess, not an OEM spec. Measure the old screw before buying.

Sony PlayStation 2 (SCPH-39000)

Securing internal heat sinks and metal shields

6-10 mm · confirmed · electronics

Mercury Marine Remote Control

Mounting internal control mechanism brackets

12 mm · confirmed · electronics

Sony PS2 (SCPH-70000)

Internal chassis assembly and drive mounting

8 mm · confirmed · electronics