#4-40 X 3/8" Machine Screws | 82 Degree Flat Undercut Head | Phillips Drive | Steel Black Oxide (10000/Pkg.)

Engineered for high‑volume projects, our [10000 BULK] Machine Screws Phil 82 Degree Flat Undercut Steel Black Oxide 4-40 X 3/8 deliver consistent, dependable performance for metal assemblies. This bulk pack is designed to simplify large builds, replacements, and standardization across teams that demand quality fasteners in bulk.

Key Features

• Bulk quantity: 10,000 screws per bulk pack for ready supply on large jobs
• Head type: Phillips flat countersunk head with an 82‑degree undercut for flush seating
• Material & finish: Steel with a Black Oxide finish for durability and a sleek appearance
• Thread size & length: #4-40 thread, 3/8 in length for precise, compact fastening
• Application suitability: Ideal for electronics enclosures, metal panels, machinery assemblies, and other light to medium-duty fastenings

Specifications

• Thread: #4-40 UNC
• Length: 3/8 in (approx. 9.5 mm)
• Head style: Phillips flat countersunk with 82‑degree undercut
• Material: Steel
• Finish: Black Oxide
• Quantity: 10,000 per bulk pack

These machine screws are designed to provide a secure, flush fit in panels and components where a low-profile head is essential. The combination of a Phillips drive, 82‑degree countersank, and undercut ensures reliable seating and reduces the risk of stripping in high‑demand environments. Use them to standardize fastener types across projects and keep your workshop stocked with dependable hardware.

Why choose these bulk machine screws? They offer consistent sizing, corrosion‑resistant finish, and a practical combination of drive type and head geometry that suits a wide range of metal applications. Perfect for manufacturing, repair, and DIY projects where quality, availability, and value matter.

Stock up now and streamline your fastener inventory with these bulk machine screws designed for reliability and everyday performance.