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Lenovo ThinkPad SL300 screw size

M1.6 / M2 · 2 to 16 mm long

Lenovo ThinkPad SL300 takes M1.6 and M2 metric screws in lengths from 2 to 16 mm.

There are 27 separate fitment records for it, including display (qty 4, wafer, black) (M1.6), palm rest (qty 5, wafer, black) (M2) and wireless card (qty 1, wafer, black) (M2), plus 24 more in the table below.

Head and drive, as the sources state them: wafer (thin) and binding heads.

27 of the 27 records are marked confirmed, drawn from 1 source (thinkpad-manuals.retropc.se).

M1.6 means a 1.6 mm nominal diameter with a 0.35 mm thread pitch. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.

Lenovo ThinkPad SL300 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
M1.64 mm0.35 mmWafer (thin) headnot statedDisplay (qty 4, wafer, black)black finishConfirmed
M216 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 5, wafer, black)black finishConfirmed
M216 mm0.4 mmWafer (thin) headnot statedWireless card (qty 1, wafer, black)black finishConfirmed
M22 mm0.4 mmWafer (thin) headnot statedBase cover (qty 1, wafer, silver)Confirmed
M22 mm0.4 mmWafer (thin) headnot statedChassis/frame (qty 2, wafer, silver)Confirmed
M22 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 1, wafer, silver)Confirmed
M22 mm0.4 mmWafer (thin) headnot statedWireless card (qty 1, wafer, silver)Confirmed
M23 mm0.4 mmWafer (thin) headnot statedBattery (qty 1, wafer, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedChassis/frame (qty 1, wafer, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedFan (qty 2, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedHeat sink (qty 4, wafer, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedMemory (qty 2, wafer, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 1, wafer, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedUnspecified (qty 4, wafer, black)black finishConfirmed
M23 mm0.4 mmWafer (thin) headnot statedWireless card (qty 4, wafer, black)black finishConfirmed
M24 mm0.4 mmWafer (thin) headnot statedChassis/frame (qty 4, wafer, silver)Confirmed
M24 mm0.4 mmBinding headnot statedDisplay (qty 4, binding, silver)Confirmed
M24 mm0.4 mmnot statednot statedFan (qty 2, silver)Confirmed
M24 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 2, wafer, silver)Confirmed
M25 mm0.4 mmWafer (thin) headnot statedChassis/frame (qty 2, wafer, black)black finishConfirmed
M25 mm0.4 mmWafer (thin) headnot statedUnspecified (qty 1, wafer, black)black finishConfirmed
M28 mm0.4 mmWafer (thin) headnot statedChassis/frame (qty 1, wafer, black)black finishConfirmed
M28 mm0.4 mmWafer (thin) headnot statedHard drive (qty 1, wafer, black)black finishConfirmed
M28 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 1, wafer, black)black finishConfirmed
M28 mm0.4 mmWafer (thin) headnot statedUnspecified (qty 1, wafer, black)black finishConfirmed
M29 mm0.4 mmWafer (thin) headnot statedPalm rest (qty 2, wafer, black)black finishConfirmed
M29 mm0.4 mmWafer (thin) headnot statedUnspecified (qty 4, wafer, black)black finishConfirmed

Fitment records and sources

M1.64 mmconfirmed

Display (qty 4, wafer, black)

pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5

M216 mmconfirmed

Palm rest (qty 5, wafer, black)

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

M216 mmconfirmed

Wireless card (qty 1, wafer, black)

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

M22 mmconfirmed

Base cover (qty 1, wafer, silver)

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

M22 mmconfirmed

Chassis/frame (qty 2, wafer, silver)

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

M22 mmconfirmed

Palm rest (qty 1, wafer, silver)

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

M22 mmconfirmed

Wireless card (qty 1, wafer, silver)

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

M23 mmconfirmed

Battery (qty 1, wafer, black)

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

M23 mmconfirmed

Chassis/frame (qty 1, wafer, black)

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

M23 mmconfirmed

Fan (qty 2, black)

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

M23 mmconfirmed

Heat sink (qty 4, wafer, black)

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

M23 mmconfirmed

Memory (qty 2, wafer, black)

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

M23 mmconfirmed

Palm rest (qty 1, wafer, black)

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

M23 mmconfirmed

Unspecified (qty 4, wafer, black)

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

M23 mmconfirmed

Wireless card (qty 4, wafer, black)

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

M24 mmconfirmed

Chassis/frame (qty 4, wafer, silver)

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

M24 mmconfirmed

Display (qty 4, binding, silver)

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

M24 mmconfirmed

Fan (qty 2, silver)

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

M24 mmconfirmed

Palm rest (qty 2, wafer, silver)

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

M25 mmconfirmed

Chassis/frame (qty 2, wafer, black)

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

M25 mmconfirmed

Unspecified (qty 1, wafer, black)

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

M28 mmconfirmed

Chassis/frame (qty 1, wafer, black)

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

M28 mmconfirmed

Hard drive (qty 1, wafer, black)

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

M28 mmconfirmed

Palm rest (qty 1, wafer, black)

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

M28 mmconfirmed

Unspecified (qty 1, wafer, black)

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

M29 mmconfirmed

Palm rest (qty 2, wafer, black)

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

M29 mmconfirmed

Unspecified (qty 4, wafer, black)

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

How to check the screw before you buy

  1. A screw that is even 1 mm too long in a laptop base can push into the keyboard, battery or a board trace, so match the length position by position.
  2. Diameter: across the threads an M1.6 screw measures about 1.6 mm with calipers (usually a hair under). This device also uses M2, so measure each screw rather than assuming they match.
  3. Pitch: 0.35 mm from one thread crest to the next (28.57 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: for wafer (thin) head / binding head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
  5. The records span 2–16 mm, which means different positions take different lengths — match each hole to its own screw.
  6. Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 for Torx, and a 1.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
  7. Tightening: no device-specific torque is published in these records. The site's general figure for M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M1.6 / M2

  • M.2 SSD mounting screws (M2 x 3mm) are frequently mislabeled generically as 'M.2 screws' which can be confused with the M2 metric thread designation — they do coincide numerically here but are conceptually distinct (M.2 = card format, M2 = thread size).
  • The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.

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 ThinkPad SL300, closest length match first.

Questions about Lenovo ThinkPad SL300 screws

What size screw does Lenovo ThinkPad SL300 use?
M1.6 × 4 mm for display (qty 4, wafer, black); M2 × 16 mm for palm rest (qty 5, wafer, black); M2 × 16 mm for wireless card (qty 1, wafer, black); M2 × 2 mm for base cover (qty 1, wafer, silver); M2 × 2 mm for chassis/frame (qty 2, wafer, silver); M2 × 2 mm for palm rest (qty 1, wafer, silver); M2 × 2 mm for wireless card (qty 1, wafer, silver); M2 × 3 mm for battery (qty 1, wafer, black); M2 × 3 mm for chassis/frame (qty 1, wafer, black); M2 × 3 mm for fan (qty 2, black); M2 × 3 mm for heat sink (qty 4, wafer, black); M2 × 3 mm for memory (qty 2, wafer, black); M2 × 3 mm for palm rest (qty 1, wafer, black); M2 × 3 mm for unspecified (qty 4, wafer, black); M2 × 3 mm for wireless card (qty 4,.
How long are the screws in Lenovo ThinkPad SL300?
The records range from 2 to 16 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M1.6 screw?
0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
What screwdriver do I need for Lenovo ThinkPad SL300?
The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.
Can I use an imperial screw instead of M1.6?
No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Lenovo ThinkPad SL300?
TechSpareWarehouse (our own store) lists M1.6 x 4mm, M2 x 2mm and M2 x 3mm, which match lengths in the records above.