RETAINER NUT 1 3/4" DIAM X 3/8-24 THREAD

I was skeptical about finding a retainer nut with the right thread pitch for my old grinder, but this one threaded on smoothly and held fast right away. The 3/8-24 threading is exactly what I needed, and the 1 3/4-inch diameter covers the arbor hole perfectly. It feels solidly built for the abrasive

Perfect fit on my surface grinder’s spindle—the 1 3/4-inch diameter seats exactly as it should, and the 3/8-24 threads engaged smoothly without any wobble. Feels solid enough for daily use.

The threads cut clean and it seats flush on the arbor without any wobble, so the fit is exactly as spec’d. The 1 3/4 diameter gives plenty of grip for tightening by hand, even with gloves on.