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Lenovo Ideapad 100-15IBY screw size

M2 / M2.5 / M3 · 2 to 6 mm long

The screws used on Lenovo Ideapad 100-15IBY are M2, M2.5 and M3 in lengths from 2 to 6 mm.

There are 19 separate fitment records for it, including base cover (qty 2, flat, black) (M2), battery (qty 3, black, Phillips) (M2) and display (qty 4, black, Phillips) (M2), plus 16 more in the table below.

Head and drive, as the sources state them: Phillips drive.

19 of the 19 records are marked confirmed, drawn from 1 source (download.lenovo.com).

M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.

Lenovo Ideapad 100-15IBY screw specifications

One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.

ThreadLengthPitchHeadDriveWhere it goesStatus
M22 mm0.4 mmnot statednot statedBase cover (qty 2, flat, black)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsBattery (qty 3, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsDisplay (qty 4, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsOptical drive (qty 1, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsPalm rest (qty 1, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsSystem board (qty 2, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsWireless card (qty 1, black, Phillips)black finishConfirmed
M24 mm0.4 mmnot statedPhillipsBattery (qty 2, silver, Phillips)Confirmed
M24 mm0.4 mmnot statedPhillipsHard drive (qty 4, silver, Phillips)Confirmed
M24 mm0.4 mmnot statedPhillipsHeat sink (qty 4, silver, Phillips)Confirmed
M26 mm0.4 mmnot statedPhillipsBase cover (qty 7, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsKeyboard (qty 3, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsOptical drive (qty 1, black, Phillips)black finishConfirmed
M2.52.5 mm0.45 mmnot statednot statedDisplay (qty 6, broadhead, black)black finishConfirmed
M2.55 mm0.45 mmnot statedPhillipsBase cover (qty 2, black, Phillips)black finishConfirmed
M2.55 mm0.45 mmnot statedPhillipsPalm rest (qty 4, black, Phillips)black finishConfirmed
M2.56 mm0.45 mmnot statedPhillipsBase cover (qty 10, black, Phillips)black finishConfirmed
M2.56 mm0.45 mmnot statedPhillipsPalm rest (qty 5, black, Phillips)black finishConfirmed
M33 mm0.5 mmnot statedPhillipsHard drive (qty 4, silver, Phillips)Confirmed

Fitment records and sources

M22 mmconfirmed

Base cover (qty 2, flat, black)

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

M23 mmconfirmed

Battery (qty 3, black, Phillips)

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

M23 mmconfirmed

Display (qty 4, black, Phillips)

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

M23 mmconfirmed

Optical drive (qty 1, black, Phillips)

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

M23 mmconfirmed

Palm rest (qty 1, black, Phillips)

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

M23 mmconfirmed

System board (qty 2, black, Phillips)

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

M23 mmconfirmed

Wireless card (qty 1, black, Phillips)

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

M24 mmconfirmed

Battery (qty 2, silver, Phillips)

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

M24 mmconfirmed

Hard drive (qty 4, silver, Phillips)

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

M24 mmconfirmed

Heat sink (qty 4, silver, Phillips)

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

M26 mmconfirmed

Base cover (qty 7, black, Phillips)

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

M26 mmconfirmed

Keyboard (qty 3, black, Phillips)

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

M26 mmconfirmed

Optical drive (qty 1, black, Phillips)

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

M2.52.5 mmconfirmed

Display (qty 6, broadhead, black)

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

M2.55 mmconfirmed

Base cover (qty 2, black, Phillips)

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

M2.55 mmconfirmed

Palm rest (qty 4, black, Phillips)

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

M2.56 mmconfirmed

Base cover (qty 10, black, Phillips)

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

M2.56 mmconfirmed

Palm rest (qty 5, black, Phillips)

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

M33 mmconfirmed

Hard drive (qty 4, silver, Phillips)

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

How to check the screw before you buy

  1. Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
  2. Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5 / M3, so measure each screw rather than assuming they match.
  3. Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. The records span 2–6 mm, which means different positions take different lengths — match each hole to its own screw.
  6. Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
  7. Tightening: no device-specific torque is published in these records. The site's general figure for M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M2 / M2.5 / M3

  • The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
  • Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
  • Suunto dive computer service manuals reference strap pins and battery compartment springs but do not explicitly cite a metric screw thread size in the sections reviewed; do not infer M2/M2.5 fitment for Suunto dive computer straps without direct confirmation.

Pitch gauge · Screw size finder · Torque guide

Buy these screws at TechSpare Warehouse

In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.

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The same screw also fits

Devices whose records share a thread with Lenovo Ideapad 100-15IBY, closest length match first.

Questions about Lenovo Ideapad 100-15IBY screws

What size screw does Lenovo Ideapad 100-15IBY use?
M2 × 2 mm for base cover (qty 2, flat, black); M2 × 3 mm for battery (qty 3, black, Phillips); M2 × 3 mm for display (qty 4, black, Phillips); M2 × 3 mm for optical drive (qty 1, black, Phillips); M2 × 3 mm for palm rest (qty 1, black, Phillips); M2 × 3 mm for system board (qty 2, black, Phillips); M2 × 3 mm for wireless card (qty 1, black, Phillips); M2 × 4 mm for battery (qty 2, silver, Phillips); M2 × 4 mm for hard drive (qty 4, silver, Phillips); M2 × 4 mm for heat sink (qty 4, silver, Phillips); M2 × 6 mm for base cover (qty 7, black, Phillips); M2 × 6 mm for keyboard (qty 3, black, Phillips); M2 × 6 mm for optical drive (qty 1, black, Phillips); M2.5 × 2.5 mm for display (qty 6, broadh.
How long are the screws in Lenovo Ideapad 100-15IBY?
The records range from 2 to 6 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M2 screw?
0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
What screwdriver do I need for Lenovo Ideapad 100-15IBY?
The source lists a Phillips drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
Can I use an imperial screw instead of M2?
No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Lenovo Ideapad 100-15IBY?
TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 3mm and M2 x 4mm, which match lengths in the records above.