Needle hub assembly (200) for a syringe (100), said assembly having a longitudinal axis (L1) comprising:—a needle hub body (210) having a syringe connector (212) for receiving an attachment member (110) of a syringe (100) at a first end (210a) of the body (210) and a needle receiving portion (214) at a second opposing end (210b) of the body (210),—a needle (216) extending from the needle receiving portion (214), wherein the syringe connector (212) comprises a substantially conical receiving opening (218) for receiving a syringe attachment member (110), at least a distal end (110b) thereof, wherein a length (A) of said opening (218), measured along the longitudinal axis (L1), is approximately 6.1+0.05 mm.
