Spring, 5 mm x 30 mm

The old spring had snapped mid-cut, so I ordered this 5x30mm replacement without much hope it'd be an exact fit. It dropped right into the autofeed mechanism on the SC4, no filing or forcing needed; part number 283 matches the diagram perfectly. Runs smooth as new now, and the feed rate feels just a

The fit on the SC4 autofeed is spot-on for the 5 mm x 30 mm spec, so no fiddling with shims or grinding. Dropped it in and the mechanism engages smoothly again, exactly what I needed for a part this specific.

The spring replacement for my SC4 lathe autofeed was an exact match to the original part; it installed in minutes and now the mechanism works like new. I’m relieved I didn’t have to buy an entire assembly.