Products for bench top machinists | LittleMachineShop.com

Key, 3x28 mm

Key, 3x28 mm - Main image
$0.66 $0.95 In stock

Key, 3x28 mm, is a worm wheel flat key intended for SC4 bench lathes. It is listed as part # 314 on the SC4 parts diagram (SC4-314) and is associated with the Sieg Industrial Group brand.

  • Type: worm wheel flat key
  • Size: 3 x 28 mm
  • Application: SC4 bench lathes
  • Part reference: # 314 on the SC4 parts diagram (SC4-314)
  • Brand: Sieg Industrial Group
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Customer Reviews (4.6 / 5 · 5 reviews)

James ★★★★★

Fits perfectly into the worm wheel shaft on my SC4 lathe, exactly like the #314 part it replaces. The machining is precise and the key slid right in with no filing needed.

Jason ★★★★★

Was a little worried the 3 x 28 mm size would be off, but it seated perfectly in the worm wheel slot with zero play. The flat key material feels solid enough to handle the lathe's torque without any concerns. Glad I grabbed the exact SC4-314 replacement.

Brian ★★★★★

The 3x28 mm dimension fits my SC4 lathe’s worm wheel perfectly, and the flat profile makes adjustments much easier than my old key.