Found! Profile Roll-On Pegs circa 1983-85.
https://www.profileracing.com/product/vintage-knurled-thread-on-aluminum-pegs-nos/ ALUMINUM PROFILE PEGS CIRCA 1983-1985 – Made in the USA – Knurled finish – Thread-on – Fits most 3/8″ to 24 threaded hub axles – Substitutes 3/8″ nut – Sold as a set