Moscow, retail small mechanics

Question

Robotics

Advise where in Moscow you can buy "small mechanics" at retail? By “minor mechanics” I mean parts ranging from common nuts, bolts, pins, etc., to rarer types: ratchet washers, lock nuts, shafts, perforated iron / plastic sheets of small sizes and the like. That is, something like "Chip and Dip" for small mechanical parts, where you can come, touch, choose and buy.

Answer 1

You can watch it on radio markets. Especially Mitinsky, but not in the building itself, but in the pavilions around it.

Answer 2

Try to use the Soviet constructor:
www.rustoys.ru/toys/images/m/mettal-konstruktor3.jpg
Meccano is a more advanced version:
t1.gstatic.com/images?q=tbn :ANd9GcTs-VOFMzC-hN7aEsx8f0xqvW-TULl_L3DY3tbRI9eNyY_km5MQ Iu
or Lego . They have options with bolts, nuts, gears, wheels, motors.