Pakistan has asked the US to address what it calls its legitimate needs in the civilian use of nuclear power.
Pakistan's Foreign Minister, Kursheed Kasuri, has called for a similar approach to be adopted towards India and Pakistan on nuclear issues.
During talks with the senior US diplomat Richard Boucher, he said this was needed to prevent an arms race.
The BBC correspondent in Islamabad says the talks were largely focused on last month's India-US nuclear deal.