They will join Adam Scott, Jason Day, Geoff Ogilvy, Aaron Baddeley, John Senden and Brendan Jones who had already qualified either by their ranking or in the case of Brendan Jones by Sectional Qualifying in Japan.
One further venue, at which several Australians will compete, was forced to suspend play due to inclement weather and qualifying there will not take place until Tuesday US time.
42 year old Anthony Summers led the two qualifiers at his venue in Illinois, his 36 hole total of 11 under seeing him finish one ahead of PGA Tour veteran Tim Herron and six ahead of the group in third position.
The effort by Summers, who plays mainly in OneAsia and Australasian events, is an exceptional one and provides the chance to play against the world's greatest golfers next week.
"I'm so excited," said Summers, who was only talked into making the journey to qualify by his sponsor after missing the cut at the Volvo China Open earlier this year.
"I have never played in a Major before and it will be an awesome experience. I have a bunch of friends who will be over here on a U.S. Open trip, so will have plenty of support out there as a bonus."
Summers has yet to play a PGA Tour event so this step up is not only a great thrill for him but a deserved reward for battling through the last 20 or more years playing wherever he can.
Pampling finished in a share of 9th at his venue in Ohio, while Presnell survived a playoff to capture one of the three places up for grabs at his venue in Texas.
It will be Pampling's 6th US Open appearance and his first since 2009.
Presnell, who is again playing the Nationwide Tour this season where he is currently 23rd on the money list, survived a four way playoff for two places and gets to play in his first US Open.