This is for a brand new Red old stock
Aluminum 5/16x24 Prop Spinner Nut with a 5/8" hex.
Weight is 8.5 grams

These are original old stock from the 1940's and used on the Viking Twin .65 engine. The red anodizing was done back in the 1940's so it doesn't look perfect new. These have been in MECOA's warehouse for 20+ years.

This is also the thread size used on larger K&B, McCoy, MECOA, ASP, Enya, Fox, HP, HB, Irvine, Magnum, Thunder Tiger, Super Tiger, OS, WEBRA, Merco, and many others.

100% MADE IN U.S.A. in the 1940's

Check our store listings for
more new and old stock spinner nuts.