The 2-640379-2 from TE Connectivity AMP Connectors is a 40-position (2 x 20) DIP Integrated Circuit socket with 0.6" (15.24 mm) row spacing, gold contacts and through-hole termination.
The 2-640379-4 from TE Connectivity AMP Connectors is a 40-position (2 x 20) DIP Integrated Circuit socket with 0.6" (15.24 mm) row spacing, gold contacts and through-hole termination.