Hello preetamapaul

I have placed a picture at left, to show a typical DIL Socket = (Dual-In-Line Socket).

Typical Specification as follows:

Dual-In-Line Sockets

A range of high quality, low-profile, dual-in-line sockets with black glass-reinforced polyester bodies and tin-plated phosphor-bronze contacts. The contact is made against the flat face of the IC leg for maximum contact area and low insertion pressure. Sockets may be mounted end to end to achieve longer continuous runs of 2 54mm (0 1in.) spaced sockets. Sockets have chamfered side walls to assist insertion. The ultra-reliable, precision-stamped, dual-wipe contacts offer an anti-overstress feature to prevent contact spring damage. One end is indented for polarisation.

Dimensions: Pin size: 3.3 x 0.6 x 0.15mm

PCB hole required: 0.8mm

Overall height above PCB: 5.1mm

Height above PCB to base of IC: 4.1mm

Distance between sockets (lengthwise): 2.54mm (0.1in.)

Various types are available.

Hope that assists you.

Kind Regards....