Replacement Fender Bullet Truss Rod Nut
The 'bullet' allen nut as introduced by Fender® for truss rod adjustment at the headstock.
Chrome-plated steel. 10-32 thread, as used by Fender after 1971.
1" x 11/32" (25.40mm x 8.73mm) diameter.
Outer diameter: 0.35"
Inner diameter: 0.16"