Model engineering oil cup / glass oiler connection thread (alternate size) screw size
Model engineering oil cup / glass oiler connection thread (alternate size) uses M4 screws. Details, length ranges and sources below.
'Oil cup made of brass with M3 or M4 connection thread. For screwing into steam engines, flame eaters and Stirling engines'
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Replacement screws for Model engineering oil cup / glass oiler connection thread (alternate size)
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- Buy on AmazonKits and single sizes, with reviews naming real devices
- Buy on eBayOEM screw sets and repair-parts sellers
- 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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