Products for bench top machinists | LittleMachineShop.com

Shaft VII, Half Nut Lever

Shaft VII, Half Nut Lever - Main image
$3.01 $4.85 In stock

This Shaft VII, Half Nut Lever is a genuine Sieg Industrial Group replacement component, identified as part # 306 on the SC4 parts diagram (SC4-306). It is designed to fit bench top machinist equipment that uses the SC4 platform, providing a direct replacement for the original lever mechanism.

  • Genuine Sieg Industrial Group part for reliable fit and function.
  • Reference number SC4-306 for easy identification on your parts diagram.
  • Compatible with SC4 series machines from LittleMachineShop.com.
  • Essential for maintaining the half nut engagement system on your lathe.
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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 (5.0 / 5 · 5 reviews)

Michael ★★★★★

Replaced the worn half nut lever on my lathe, and the fit was perfect—no wobble or play at all. The machining on this genuine replacement part is noticeably tighter than generic options I've tried. Exactly what my SC4 needed to get back to accurate threading.

Harper ★★★★★

Installed this half nut lever on my SC4 this afternoon and it threaded on smoothly without any binding—exactly what I needed. The fit as part 306 on the diagram was spot on, saving me from chasing wrong parts.

Chloe ★★★★★

The threads on this replacement lever matched perfectly with the cross-feed nut on my mini lathe, so I didn't have to chase any threads. It's a solid hunk of metal that feels heavier than the original part, which gives me confidence it'll hold up. Very happy to get my machine back in action without