MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw screw size
M1.6 · 4.1 mm long
If you are replacing a screw on MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw, the thread is M1.6, 4.1 mm long.
Where it is used: apple official screw chart lists part 922-9657 as 'Screw, Torx T5, M1.6 x 4.1, H3.2' for fan attachment under I/O cable.
Head and drive, as the source states them: Torx T5 drive.
This entry is marked confirmed and comes from macrecycling.com.
An M1.6 screw is 1.6 mm in diameter with a 0.35 mm pitch, tapped with a 1.25 mm drill; imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw 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.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M1.6 | 4.1 mm | 0.35 mm | not stated | Torx T5 | Apple official screw chart lists part 922-9657 as 'Screw, Torx T5, M1.6 x 4.1, H3.2' for fan attachment under I/O cable | Confirmed |
Fitment records and sources
Apple official screw chart lists part 922-9657 as 'Screw, Torx T5, M1.6 x 4.1, H3.2' for fan attachment under I/O cable
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
How to check the screw before you buy
- 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).
- Diameter: across the threads an M1.6 screw measures about 1.6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- 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.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The record states 4.1 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source names a Torx T5 drive. For comparison, standard M1.6 heads take PH00 (Phillips) or T4–T5 (Torx), or a 1.5 mm hex key.
- 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
- Apple's own part naming mixes thread (M1.6) with head diameter (H3.0/H3.2) — read the full part description carefully to avoid conflating head size with thread size.
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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M1.6 x 4mm Screws Compatible with Dell XPS 14 9440 Battery System Board 10-Pack
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M1.6 x 4mm Phillips Wafer Head Micro Screws LCD Shell Repair 10-Pack
$4.99
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M1.6 Phillips Flat Head Carbon Steel Machine Screws (Multiple Lengths & Finishes)
$0.05Choose size -
M1.6 Phillips Flat Head Carbon Steel Machine Screws (Multiple Lengths & Finishes) | 50-Pack
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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw, closest length match first.
- DIN 912 socket-head cap screw also M1.6 × 4.1 mm
- DIN 965 / ISO 7046 countersunk Phillips screw also M1.6 × 4.1 mm
- Arduino / PCB standoffs also M1.6 × 4.1 mm
- Compact smart sensor PCBs also M1.6 × 4.1 mm
- Valve Steam Deck (LCD) also M1.6 × 4.1 mm
- Precision instrument hex socket head screws (used in cameras/electronics repair) also M1.6 × 4.1 mm
- RC micro helicopters also M1.6 × 4.1 mm
- NBK SSCZS miniature captive screw for precision instruments also M1.6 × 4.1 mm
Questions about MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw screws
- What size screw does MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw use?
- M1.6 × 4.1 mm for apple official screw chart lists part 922-9657 as 'Screw, Torx T5, M1.6 x 4.1, H3.2' for fan attachment under I/O cable.
- How long are the screws in MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw?
- The record gives 4.1 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw?
- The source lists a Torx T5 drive. Standard M1.6 heads otherwise take PH00 (Phillips) or T4–T5 (Torx), or 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 MacBook Air 13-inch 2017 (A1466) fan-to-top-case screw?
- TechSpareWarehouse (our own store) lists M1.6 x 4mm, which matches the length in the records above.