Engineered for durable, reliable fastening, these Machine Screws Unslotted Indented Hex Washer Zinc Plated 1/4-20 x 3/8 deliver strong performance in metal-to-metal assemblies. The zinc plating offers corrosion resistance, making them a go-to choice for machinery, electrical enclosures, appliances, and automotive applications.

Key features

• Size: 1/4-20 UNC with length 3/8 in
• Head style: Hex washer head for a flush, secure fit
• Drive type: Indented hex (internal hex) drive requires an Allen key
• Material & finish: Zinc-plated steel for corrosion resistance
• Thread: Unified National Coarse (UNC) 1/4-20
• Slotted: Unslotted (no screwdriver slot)
• Applications: Ideal for machine assemblies, equipment, electronics enclosures, and other metal-to-metal fastenings

Whether you’re assembling a cabinet, securing panels, or repairing automotive components, these screws provide a reliable hold with a clean finish. Pair with the appropriate nuts or tapped holes for secure, vibration-resistant performance.