This little screw holds the choke valve plate (cold start enrichment) to the choke shaft on Weber DGV carburetors. Each plate takes 2 screws, so a 2-barrel carburetor requires 4 screws. Sold individually.
Fits genuine Weber 32/36 DGV series (including DGV 5A, DGAV, DGEV), 32/36 DFV series (including DFAV, DFEV), 32 DIR, 38 DGS series (DGAS, DGES), and 40 DFAV only. Not for any other brand, model, or variant.
Note: This is not the same as the throttle plate screw.