Hardware
Offset standard nut, M4x0.7 thread, 20mm length.
1/4-20 20mm 1-Hole Offset Std Nut
M5x0.8 20mm 1-Hole Std Offset Nut
M6x1.0 20mm 1-Hole Std Offset Nut
M6x1.0 39mm 2-Hole Std Nut