1/2-13 Locknuts - Nylon Insert Lock Nuts, 304 Stainless Steel

1/2-13 Locknuts - Nylon Insert Lock Nuts, 304 Stainless Steel. Anti-loosening & anti-vibration nylon insert design, solve loose nut trouble under vibration. High-quality PA66 nylon insert, elastic and reusable, not easy to aging. Precision rolling thread, tight matching, no sliding wire, no damage to bolts. Two versions for global market: white nylon inch size for America/Australia; blue nylon metric size for EU & general industry. Strict dimensional & corrosion testing, factory direct wholesale with competitive price.