Dell Inspiron 15 3520 screw size

Base cover screws

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

3-cell battery retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

4-cell battery retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

RF bracket fix (head OD 7 mm)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M.2 2230 SSD retention (head OD 5 mm)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M.2 2280 SSD retention (head OD 5 mm)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Wireless card retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

I/O board retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Hard-drive assembly retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Heat sink retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Fan retention

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Power button (head OD 5 mm)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

Power button with fingerprint reader

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

Hard-drive bracket retention

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10