Heavy-duty nylon cable ties are not suitable alternatives for substantial lockout supplies, such as locks and chains. According to OSHA 29 CFR 1910.147(c)(5)(i), energy isolating devices "shall be substantial enough to prevent removal without the use of excessive force or unusual techniques, such as with the use of bolt cutters or other metal cutting tools."
Additionally, cable ties are not constructed in such a way that they require bolt cutters or other metal-cutting instruments to remove. Instead, they are generally removable by using standard cutting tools.