Knurled knob for the vacuum tank vent on 1930 – 1931 Cadillac V-16. Sold with a natural finish – knob is normally chromed prior to installation on car.
Cadillac part number 882187, group number 12.3860 “Nut for vacuum tank top cover”.
Material: 12L14
Finish: Natural
Thread: 1/4-20
Length: .618
OD: .625
ID: .208
Hole: .09
OD at bottom: .500
