Keystone Electronics Corp. - Instrumentation Knobs

Unit of Measure

Items	8554 Instrumentation Knobs	8555 Instrumentation Knobs	8556 Instrumentation Knobs	8557 Instrumentation Knobs	8558 Instrumentation Knobs
Shaft Diameter	N/A 0.125 in3.2 mm	N/A 0.250 in6.4 mm	N/A 0.250 in6.4 mm	N/A 0.250 in6.4 mm	N/A 0.125 in3.2 mm
Diameter D	N/A 0.500 in12.7 mm	N/A 0.700 in17.8 mm	N/A 0.920 in23.4 mm	N/A 1.250 in31.8 mm	N/A 0.500 in12.7 mm
Height H	N/A 0.660 in16.8 mm	N/A 0.780 in19.8 mm	N/A 1.010 in25.7 mm	N/A 0.828 in21.0 mm	N/A 0.660 in16.8 mm
Maximum Dimension M	N/A	N/A	N/A	N/A	N/A 0.915 in23.4 mm
Shaft Attachment - L (Location)	N/A 0.320 in8.1 mm	N/A 0.360 in9.1 mm	N/A 0.460 in11.7 mm	N/A 0.400 in10.2 mm	N/A 0.320 in8.1 mm
Shaft Attachment - B (Depth)	N/A 0.570 in14.5 mm	N/A 0.680 in17.3 mm	N/A 0.910 in23.1 mm	N/A 0.700 in17.8 mm	N/A 0.570 in14.5 mm
Nut Clearance Inner Diameter	N/A 0.360 in9.1 mm	N/A 0.500 in12.7 mm	N/A 0.640 in16.3 mm	N/A 1.010 in25.7 mm	N/A 0.360 in9.1 mm
Nut Clearance - C (Center Bore Depth)	N/A 0.170 in4.3 mm	N/A 0.180 in4.6 mm	N/A 0.330 in8.4 mm	N/A 0.250 in6.4 mm	N/A 0.170 in4.3 mm
Knob Material	N/A ABS
Inlay Material	N/A Spun Aluminum
Insert Material	N/A Brass
Insert Finish	N/A Nickel Plate
Certification	N/A ISO 9001 RoHS Compliant
Features	N/A All knobs supplied with two set screws installed