Bicycle bottle cage bosses (Trek and industry standard) screw size
Bicycle bottle cage bosses (Trek and industry standard) uses M5 screws. Details, length ranges and sources below.
Hex socket bolts into frame braze-ons; same thread used for racks, fenders and accessory mounts
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
Replacement screws for Bicycle bottle cage bosses (Trek and industry standard)
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- Buy on AmazonKits and single sizes, with reviews naming real devices
- Buy on eBayOEM screw sets and repair-parts sellers
- M5 screw assortment kitBoxed kit with several lengths — the cheapest way to cover one thread size
- M5 socket cap screwsISO 4762 / DIN 912 hex-drive, the engineering default
- M5 low profile / button headFor clearance-limited repairs and thin covers
- M5 standoffs & spacersPCB and board-mount hardware in the same thread
- M5 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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