KN1751AS1/4 is a machined aluminum knob from the K Series Alcoswitch product line, featuring a straight knurl grip with an integrated spinner for easy adjustment. This knob is designed for 1/4" shafts with a shaft bore of 0.251" (6.38 mm) and includes two No. 6-32 set screws for secure mounting. Key dimensions include a diameter (A) of 1.75" (44.5 mm), height (E) of 0.620" (15.8 mm), and skirt diameter (D) of 1.65" (41.9 mm). The natural aluminum finish provides a professional appearance suitable for instrumentation, audio equipment, and industrial control panels where precise rotary adjustments are required.