The Eaton HP103 Woodruff key is a driveline hardware component used to lock a shaft and hub together against rotation. This half-moon key seats into a machined pocket in the shaft and mates to the corresponding keyway, keeping the paired parts indexed and preventing slip under load. The same part is cross-referenced in the aftermarket as Spicer HP103 and Spicer part EHHP103. It is a small but critical fastener for keeping shaft-mounted components correctly timed. Buy it as a genuine Eaton part from Pro Gear and Transmission. Not sure this is your part? Give us a call to confirm proper fit for your application.
Features
Eaton Woodruff key, part number HP103
Half-moon key style that seats in a shaft pocket to lock a hub against rotation
Cross-referenced as Spicer HP103 and Spicer part EHHP103
Driveline hardware and fastener application
Genuine Eaton part sold by Pro Gear and Transmission
