Products for bench top machinists | LittleMachineShop.com

Handle Set I, Half Nut Lever

Handle Set I, Half Nut Lever - Main image
Handle Set I, Half Nut Lever - View 2
$14.79 $19.99 In stock

This Handle Set I, Half Nut Lever is a replacement part for Sieg Industrial Group machines, identified as part #309 on the SC4 parts diagram (SC4-309). It is designed to fit bench top machinist equipment, providing the necessary control for engaging the half nut mechanism.

  • Replacement handle set for Sieg SC4 lathes
  • Includes the half nut lever for precise threading operations
  • Reference part number SC4-309 for compatibility checks
  • Constructed to meet original equipment specifications
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Customer Reviews (4.6 / 5 · 5 reviews)

Mia R. ★★★★★

Wasn't sure a half nut lever would feel this solid, but the fit on my SC4 is dead on and the threading engages smoothly. Part #309 matched my parts diagram exactly, so no guessing. Two minutes to swap in and the carriage lock works like new again.

Harper ★★★★★

Snapped right onto my SC4 with no filing needed, and the lever action feels tighter than the worn original. Took me five minutes to swap out.

Ella ★★★★★

Wasn't sure this half nut lever would match my older bench top machine, but it dropped right in as part #309 on the SC4 diagram. Threading engagement feels crisp now instead of slipping.