Secure your projects with the Fastenal 5/16"-24 Grade F Zinc Finish Steel Flange Top Lock Nut, a durable and reliable choice for any construction need. The inch-based system of measurement ensures compatibility with a wide range of threads, while the robust steel material provides strength for repeated use. Featuring a top lock flange design for improved stability, this nut is ideal for assembling parts where vibration or movement is a concern. The zinc finish offers corrosion resistance, ensuring longevity in various environments. Trust in Fastenal's quality for all your hardware requirements.