Vintage Series Truss Rod Adjuster Nut. Fits classic USA Fender guitars and basses from the '50s-present including Stratocaster, Precision Bass, Telecaster, Jazz Bass, Jazzmaster, Jaguar, etc. Exactly the same part used on USA Vintage Series instruments. 10-32 thread on the rod end, double slotted on the adjustment end. .375" diameter, .880" long. Brand New. Genuine Fender 0994944000. UPC 717669507121.