Drive Shaft, Lead Screw, 8.5x20 Bench Lathe

Name: Drive Shaft, Lead Screw, 8.5x20 Bench Lathe
Brand: Sieg Industrial Group
SKU: 4495
Price: 21.56 USD
Availability: InStock
Rating: 5.0 (5 reviews)

Drive Shaft, Lead Screw, 8.5x20 Bench Lathe - Main image

$21.56 ~~$29.95~~ In stock

Lead screw drive shaft for the 8.5 x 20 HiTorque bench lathes and SIEG SC4 bench lathes.
This drive shaft has a fitting for an m4x16 key on one end.

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Customer Reviews (5.0 / 5 · 5 reviews)

Elizabeth C. ★★★★★ Oct 22, 2026

The spline fits perfectly into my lathe's carriage, and the keyway is milled cleanly—no filing needed. Thread engagement feels snug without any wobble during operation.

Riley C. ★★★★★ Oct 21, 2026

The m4x16 key fitting was exactly what I needed to get my SC4 back up and running, and the shaft itself feels solidly machined. Took less than 20 minutes to swap out.

Elizabeth ★★★★★ Oct 20, 2026

The replacement lead screw fit perfectly on my SC4 lathe, and the threads engaged smoothly without any binding. I appreciate that the M4x16 key slot was precisely machined, making installation straightforward.