Description:

The Hillman Group 3337 is a 30 pack of zinc plated square nuts designed for 5/16-18 coarse bolts. These fasteners feature four flat sides to provide maximum wrench contact and resist spinning when seated against flat surfaces or in channels.

• Size: 5/16-18
• Thread Class: Coarse
• Material: Alloy Steel
• Finish: Zinc Plated
• Color: Silver
• Quantity: 30 pieces per pack
• Shape: Square
• Thread Style: Unified National Right Hand
• Thread Coverage: Fully Threaded
• Anti Turn Design: Four flat sides grip well and resist rotation in slots or wood recesses
• Corrosion Resistance: Zinc plating protects against rust for indoor and light outdoor use
• Applications: Ideal for strut and channel framing, wood connections, machinery, sign mounting, and fixture installation