wireway fastener
material: brass
round cap,
groove width 0.062±0.010 inch, depth 0.093±0.010 inch
externally threaded, NPSM 1/8 inch, 0.38±0.03 inch
diameter: 0.593±0.010 inch, 0.318±0.010 inch
through hole diameter 0.218±0.010 inch, for wireway
length: 1.31±0.03 inch
chamfer 45°±30′