Surgical materials of monofilament nylon (0, 3-0 and 4-0), braided polyester (0, 3-0 and 4-0) and monofilament polypropylene (0, 3-0 and 4-0) of 7 trademarks commercialized in Brazil, was submitted to analysis of diameter, length, enchasement resistance, tensile strength of surgery materials knotted and unknotted, according to ABNT. The results show that most of surgical materials was inside of preconizing patterns of ABNT