Shimano derailleur limit screws (H/L limit and B-tension) screw size
Shimano derailleur limit screws (H/L limit and B-tension) uses M4 screws. Details, length ranges and sources below.
ShunTool guide states 'Shimano derailleur limit screws are typically M4 size ... DA screws are M4 x 11.5 for the rear RD and M4 x 10 for the FD. The B screw is M4 x 12'
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Replacement screws for Shimano derailleur limit screws (H/L limit and B-tension)
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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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