
- Steel Hex Nut, Zinc Plated Finish, Grade C, Self-Locking Top Lock, Right Hand Threads, 5/16"-18 Threads (Pack of 100)
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From $9.77 (New)

From $9.77 (New)

| Latest | $9.77 2 days ago |
| Highest | $9.77 2 days ago |
| Lowest | $4.96 Feb 16, '16 |
| Average | $5.88 (30d avg) $6.36 (90d avg) $7.27 (180d avg) $7.84 (365d avg) $7.25 (Lifetime average) |
| Added | Nov 14, 2014 |
30 day average: 94,067
90 day average: 177,795
The grade C steel hex nut has a self-locking top-lock design and a zinc plating. It has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the nut. The self-locking top threads are deformed to help prevent loosening when the nut is threaded to another component. Grade C steel, composed of carbon steel, is often used in applications where strength is the primary consideration and is harder than Grade A steel. The zinc plating offers corrosion resistance and has a reflective appearance.Nuts are internally threaded fasteners that are used with bolts and threaded rods and studs to connect components. Several different nut styles fit a variety of application and installation requirements. Some styles, such as hex nuts, acorn nuts, flange nuts, and coupling nuts, must be tightened with a tool. Others, such as eye nuts, thumb nuts, and wing nuts, can be tightened by hand. Some nuts have a self-locking mechanism, such as a nylon patch or distorted threads, that makes them suitable for applications with a high amount of vibration.