#4-40 X 5/8" Machine Screws | Indented Hex Head | Steel Zinc Plated (10000/Pkg.)

Machine Screws Unslotted Indented Hex Zinc Plated 4-40 x 5/8 are precise fasteners designed for small assemblies where a clean, flush drive is required. The unslotted indented hex drive provides a secure fit, while zinc plating offers corrosion resistance for extended life in electronics, machinery, and panel applications.

These machine screws are specified as size 4-40 with a length of 5/8 inch. They are ideal for hardware where a compact fastener is needed to join thin metal sheets, brackets, or enclosed components with tapped holes or nuts where a flush drive is preferred.

Key Specifications

• Type: Machine screws
• Drive: Unslotted Indented Hex
• Finish: Zinc Plated
• Thread Size: 4-40
• Length: 5/8" (0.625")

Why choose zinc plated unslotted indented hex machine screws?

Zn plating provides corrosion resistance for light to moderate use environments, preserving appearance and integrity in electronics enclosures, control panels, and equipment assemblies. The indented hex drive minimizes slippage and cam-out during installation, enabling a secure, flush seating that looks neat in assemblies where head visibility is minimized.

For best results, pair with corresponding nuts or tapped holes drilled to standard 4-40 thread size. Ensure appropriate clearance and tolerances for your material thickness to achieve reliable fastening.