1/4"-20 X 1/2" Machine Screws | Truss Head | Phillips Drive | Steel Black Oxide (4000/Pkg.)

Machine Screws Phil Truss Steel Black Oxide 1/4-20 X 1/2 — these precision machine screws are designed for durable metal-to-metal and panel fastening across a range of applications. Featuring a steel body finished in black oxide, they deliver a clean, low-glare appearance with dependable torque performance.

Designed with a Phillips drive and a low-profile truss head, these screws seat flush against surfaces while providing strong load distribution across the joint. The 1/4-20 UNC thread and 1/2 inch length make them ideal for medium-thickness materials, electronics enclosures, and cabinetry hardware.

Key specifications

• Thread size: 1/4-20 UNC
• Length: 1/2 in
• Head style: Truss head with Phillips drive
• Material: Steel
• Finish: Black oxide
• Typical use: Metal panels, enclosures, cabinetry, furniture hardware, and equipment assemblies

Why choose black oxide steel machine screws

Black oxide finish provides a durable, corrosion-resistant surface with a professional, low-glare appearance. They’re a versatile choice for everyday fastening tasks where strength, reliability, and a clean look matter.

Installation tips

• Use a compatible Phillips screwdriver for best results and to minimize cam-out.
• Ensure mating threads are clean and free of debris for smooth engagement.
• Pair with washers or locking compounds if vibration is a concern in your application (where appropriate).