Pater went over twice inside the primary quarter-hour with Hendy, Freeman and Coles all following him in throughout a primary interval Northampton bossed.
However two tries from Christian Wade which had been each transformed – with the primary an excellent end-to-end and side-to-side rating which had levelled issues early – confirmed Newcastle will trigger issues for loads of groups this season.
If these had been the positives, two yellow playing cards had been the balancers for the guests. A primary for a visit by Harrison Obatoyinbo and the second for a no-hands deal with beneath the sticks by Pouri Rakete-Stones hampered their defensive effort.
These errors allowed Saints to stretch clear within the second interval.
All through the 80 minutes the guests had no actual reply to the ability and tempo of Henry Pollock, who celebrated his new £400,000 contract extension not solely with an attention grabbing braided coiffure however a efficiency which justified all of it.
Pollock was not alone in hitting the bottom working with Smith excellent and Freeman and Pater ruthless.
Freeman accomplished his hat-trick with two second-half tries both facet of Cam Jordan’s first for Newcastle, after signing from Gloucester in the summertime.
Sleightholme pounced simply seconds after approaching as an alternative and the spectacular Pater rounded off the win along with his personal hat-trick.
Nevertheless, the impressively cellular Werner Kok scored a comfort late on to make sure Newcastle left with a bonus level to their identify.
Northampton: Pater, Freeman, Hutchinson, Dingwall, Hendy, F Smith, McParland, Iyogun, Langdon, Kundiona, Coles, Prowse, Kemeny, Pollock, Chick
Replacements: R Smith, Fischetti, Neculai, Lockett, Taylor, Mitchell, Belleau, Sleightholme.
Newcastle: Obatoyinbo, Wade, Hearle, Harris, Kok, Connon, Elliott, Rakete-Stones, McGuigan, Millar Mills, Usher, Jordan, Hicks, Christie, Graham.
Replacements: Fletcher, West, Harper, Molina, Leatherbarrow, Cruz, Henry, Sotutu.
Sin bin: Obatoyinbo (14), Rakete-Stones (43)
Referee: Anthony Woodthorpe.
