Products for bench top machinists | LittleMachineShop.com

Key, 5x20 mm

Key, 5x20 mm - Main image
$0.43 $0.69 In stock

This 5x20 mm key is found on both the MT3 and R8 spindles of mini mills. On the MT3 spindle, it is the top most key. On the R8 spindle it is the bottom key.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Carter ★★★★★

This tiny key fit perfectly into the keyway on my mini mill's R8 spindle, no filing needed. The 5x20 mm dimensions were exactly what I needed to get the machine back up and running.

Hazel ★★★★★

Bought this as a replacement for the bottom key on my R8 spindle and it fit perfectly, no filing needed. The 5x20 mm size was exactly what I needed to get the mini mill back in operation.

Sophia A. ★★★★★

The dimensions are spot-on for the MT3 spindle on my mini mill, and it seated perfectly without any filing. Exactly what I needed to get the machine back up and running.