https://www.mccoys.com/shop/p/7480361-052303-28/koch-4075651-square-machine-key-assortment
4075651 Square Machine Key Assortment
Sku: 7480361-052303-28
$25.20
40 Available at
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Estimated Arrival On: 12/18/2025
Square machine keys from Koch Industries have a lightly oiled finish. Commonly used for mechanical applications, securing wheels or pulleys to a spindle.
- Installed between shaft key seats and the hub keyways to transmit torque in power transmission assemblies
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