The enzyme is involved in degradation of nylon-6 oligomers. It degrades linear oligomers of 6-aminohexanoate with a degree of polymerization of 2--20 by exo-type cleavage, removing residues sequentially from the N-terminus. Activity decreases with the increase of the polymerization number of the oligomer. cf. EC 188.8.131.52, 6-aminohexanoate-oligomer endohydrolase and EC 184.108.40.206, 6-aminohexanoate-cyclic-dimer hydrolase.