Navien NCO series tankless water heater screw size
Navien NCO series tankless water heater uses M4 screws. Details, length ranges and sources below.
Service spare part 20041461A screw
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Replacement screws for Navien NCO series tankless water heater
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- Buy on AmazonKits and single sizes, with reviews naming real devices
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- M4 screw assortment kitBoxed kit with several lengths — the cheapest way to cover one thread size
- M4 socket cap screwsISO 4762 / DIN 912 hex-drive, the engineering default
- M4 low profile / button headFor clearance-limited repairs and thin covers
- M4 standoffs & spacersPCB and board-mount hardware in the same thread
- M4 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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