I've been buying products from LMI since the 70's, long before the web was around. 
The selection and quality has always been superior, and the pricing reasonable! There are other places I can go to buy materials, but none that I trust as much...

Allan Harrington

Truss Rod nuts & wrenches

LMI truss rod nut, TRN
Truss rod nut, Fender™-style, TRNF

Truss rod nuts are designed to keep headstock cutaway to a minimum. The two styles of truss rod nuts we offer here are for people who make their own truss rods (When you purchase one of our truss rods, the truss rod nuts are supplied with it).

Truss Rod Nut Dimensions:
LMI truss rod nut (TRN): 3/4" long x 1/4" OD with a 10-32 thread
Fender™-style nut (TRNF): 1/2" long x 3/8" OD with a 10-32 thread

The TRW Allen wrench works with all LMI truss rods.

TRW, 9/64" Allen wrench

SKU Product Name In Stock Each 12+  
TRN LMI truss rod nut Yes $4.57 $4.04
TRNF Truss rod nut, “Fender™”-style Yes $3.05 $2.73
TRW 9/64" Allen wrench for LMI truss rod Yes $1.47 $1.31