The 1400 is a control knob manufactured from glass-filled phenolic material (G.P. Phenolic B11) in black color. It features equally-spaced knurls positioned 6° apart around the outer diameter to provide enhanced grip and tactile feedback for manual operation. The knob includes a molded hole (Ø0.25 inches) designed to accommodate an #8-32 cup-pointed set screw (part 10328) for secure mounting on control shafts. With a maximum outer diameter of 0.68 inches and a height of 0.84 inches, this compact knob is suitable for precision instruments, laboratory equipment, and industrial control panels where reliable manual adjustment is required.