Prusa i3 MK3S/MK4 printed parts and extruder screw size
Prusa i3 MK3S/MK4 printed parts and extruder uses M3 screws. Details, length ranges and sources below.
M3 machine screws from M3x4 to M3x40 listed by part code in the official Prusa cheatsheet
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Replacement screws for Prusa i3 MK3S/MK4 printed parts and extruder
Affiliate links — they cost you nothing extra and keep this database free.
- Buy on AmazonKits and single sizes, with reviews naming real devices
- Buy on eBayOEM screw sets and repair-parts sellers
- M3 screw assortment kitBoxed kit with several lengths — the cheapest way to cover one thread size
- M3 socket cap screwsISO 4762 / DIN 912 hex-drive, the engineering default
- M3 low profile / button headFor clearance-limited repairs and thin covers
- M3 standoffs & spacersPCB and board-mount hardware in the same thread
- M3 tap & drillFor cutting or chasing a damaged thread
- Precision driver setSmall threads need a properly fitting bit or you cam out and round the head
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