Products for bench top machinists | LittleMachineShop.com

Retaining Ring, M21 External

Retaining Ring, M21 External - Main image
$0.21 $0.29 In stock

Retaining Ring, M21 External, offered by LittleMachineShop.com for bench top machinists. This is an external retaining ring intended for a 21 mm shaft, and it is listed under the fasteners category as a retaining ring. The brand shown for this item is Sieg Industrial Group.

  • Type: external retaining ring
  • Size designation: M21
  • Fits: 21 mm shaft
  • Brand: Sieg Industrial Group
  • SKU: 2138 (Standard)
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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)

Jason D. ★★★★★

Finally, a retaining ring that actually fits a 21mm shaft without any extra filing — the thickness is just right for my lathe project. Snapped right into the groove with minimal effort.

John ★★★★★

Exactly the right fit for my 21 mm shaft, and the external profile sits flush without any wobble once snapped into place. Packaging was plain but sturdy, so the ring arrived undamaged and ready to use.

Claire I. ★★★★★

The inner groove seats cleanly on my 21mm shaft without any filing, and the fit is snug enough that I trust it under load. Took me a minute to get the pliers seated right, but once it clicked in, it held firm.