A 52nd-minute penalty from Brian Quailey earned Nuneaton a second-round replay with Histon in the FA Cup.
Matty Collins' header on 35 minutes put Nuneaton ahead, but Histon levelled straight after through Jamie Barker.
Histon took the lead just before the break with Nathaniel Knight-Percival's 20-yard strike before Quailey's penalty levelled matters.
Nuneaton looked to have nicked it with 10 minutes left, but Terry Angus' header was ruled out for a foul.
Nuneaton: Acton, Oddy, Moore, Angus, Love, Collins, Noon, Reeves, Staff, Quailey, Frew (Murphy 76).
Subs Not Used: Fitzpatrick, Poole, Wilkin, Whittaker.
Goals: Collins 35, Quailey 52 pen.
Histon: Key, Jackman, Bowden, Okay, Haniver, Adrian Cambridge, Farrington (Hipperson 74), Neil Andrews, Knight-Percival, Barker, Gutzmore (Goddard 86).
Subs Not Used: Hulyer, Ian Cambridge, Nightingale.
Booked: Adrian Cambridge, Okay, Jackman, Goddard.
Goals: Barker 36, Knight-Percival 44.
Ref: P Melin (Surrey).