Escalator drive station / chain guide / contact mat / illumination hex cap screw screw size
M4 · 20 mm long
The screws used on Escalator drive station / chain guide / contact mat / illumination hex cap screw are M4, 20 mm long.
The record covers KONE parts catalog page for part DEE0056647 lists 'HEX CAP SCREW,M4X20MM DIN933 8.8 A2B', with component family codes covering Escalator Drive station, Escalator Chain guide, Escalator Contact mat, and Escalator Illumination.
Head and drive, as the source states them: socket cap head.
This entry is marked confirmed and comes from parts.kone.com.
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Escalator drive station / chain guide / contact mat / illumination hex cap 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 |
|---|---|---|---|---|---|---|
| M4 | 20 mm | 0.7 mm | Socket cap | not stated | KONE parts catalog page for part DEE0056647 lists 'HEX CAP SCREW,M4X20MM DIN933 8.8 A2B', with component family codes covering Escalator Drive station, Escalator Chain guide, Escalator Contact mat, and Escalator Illumination | Confirmed |
Fitment records and sources
KONE parts catalog page for part DEE0056647 lists 'HEX CAP SCREW,M4X20MM DIN933 8.8 A2B', with component family codes covering Escalator Drive station, Escalator Chain guide, Escalator Contact mat, and Escalator Illumination.
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Take one original screw out first and measure it before ordering; the record above tells you the thread, the original screw tells you the exact length and head.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.7 mm from one thread crest to the next (14.29 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: for socket cap screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The record states 20 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
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.
More in Other Equipment
The same screw also fits
Devices whose records share a thread with Escalator drive station / chain guide / contact mat / illumination hex cap screw, closest length match first.
- Strike plate and hinges (metric doors) also M4 × 20 mm
- Thermostat and wall control backplates also M4 × 20 mm
- Makeblock mBot Neo/mBot2 assembly kit also M4 × 20 mm
- Nerf blaster thumbscrews (large) also M4 × 20 mm
- LG 42LM6400 also M4 × 20 mm
- Belmont Eurus S6 Dental Unit also M4 × 20 mm
- GCX barcode scanner adapter base plate also M4 × 20 mm
- LG 65LW6500 also M4 × 20 mm
Questions about Escalator drive station / chain guide / contact mat / illumination hex cap screw screws
- What size screw does Escalator drive station / chain guide / contact mat / illumination hex cap screw use?
- M4 × 20 mm for KONE parts catalog page for part DEE0056647 lists 'HEX CAP SCREW,M4X20MM DIN933 8.8 A2B', with component family codes covering Escalator Drive station, Escalator Chain guide, Escalator Contact mat, and Escalator Illumination.
- How long are the screws in Escalator drive station / chain guide / contact mat / illumination hex cap screw?
- The record gives 20 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for Escalator drive station / chain guide / contact mat / illumination hex cap screw?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.