If you require hidome part which used in solenoid parts , It is in 0. 5mm Brass with silver plated, m3 nut inserted with lancing.

Company's name  :- Ravindra Engineering Works. 
Contact person     :- Mr Kunal R. Sakhale.
Address               :- Mahavir  Indl. Estate, Gala No. 15, Navghar, Vasai(e),mumbai,(INDIA)
Mobile No.           :-  9004802274
E-mail                 :- ravindraenggworks  at  gmail  dot  com