Black Carbon Steel Self-Tapping Screws M3 M4 Phillips Head Set

Black Carbon Steel Self-Tapping Screws — Multi-Size Combination Set

Stock your toolbox with this versatile combination set of black carbon steel self-tapping screws. Featuring Phillips (cross head) pan and round head designs in multiple sizes — including M3 and M4 — this assortment delivers reliable fastening performance for woodworking, electronics assembly, DIY projects, and general repairs. The black oxide finish provides a clean, professional look while offering added durability against everyday wear.

Key Features

• Multi-Size Assortment: Includes a variety of lengths and diameters (M3, M4, and more) to cover a wide range of fastening needs in one convenient set.
• Carbon Steel Construction: Hardened carbon steel delivers strong, dependable holding power for both soft and hard materials.
• Cross (Phillips) Head: Compatible with standard Phillips screwdrivers and bits for quick, easy driving.
• Pan & Round Head Styles: Low-profile heads sit flush or just above the surface for neat, secure finishes.
• Black Oxide Finish: Sleek black coating provides a professional appearance and helps resist corrosion from everyday use.
• Generous Quantity: Ample count per set means you'll always have the right size on hand — great for workshops, garages, and hobby benches.

Specifications

• Material: Carbon Steel
• Head Type: Cross (Phillips) / Pan Head / Round Head
• Drive Type: Phillips (Cross Head)
• Sizes Included: M3, M4 (multiple lengths)
• Finish: Black Oxide
• Set Type: Combination / Assortment

Ideal For

• Electronics assembly and PCB mounting
• DIY woodworking and furniture assembly
• Home repair and maintenance tasks
• Model building, hobby crafts, and prototyping
• Workshop and garage storage replenishment

For general guidance on fastener standards and safe hardware use, visit the U.S. Consumer Product Safety Commission (CPSC).

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Frequently Asked Questions

Q: What sizes are included in this self-tapping screw combination set?

A: This set includes multiple sizes of black carbon steel self-tapping screws, covering M3 and M4 diameters in a variety of lengths. The multi-size assortment is designed to meet a wide range of fastening needs for DIY projects, electronics, woodworking, and general repairs — all in one organized kit.

Q: What material are these self-tapping screws made from?

A: These screws are manufactured from hardened carbon steel with a black oxide finish. Carbon steel provides strong, durable holding power suitable for both soft and harder materials, while the black coating delivers a clean look and helps protect against everyday wear.

Q: What type of screwdriver do I need to drive these screws?

A: These screws feature a Phillips (cross head) drive, meaning they are compatible with any standard Phillips screwdriver or Phillips-tip drill bit. The cross head design allows for firm engagement and efficient driving, reducing slippage during installation.

Q: Are these screws suitable for outdoor use?

A: These black carbon steel self-tapping screws are best suited for indoor or dry-environment applications such as electronics assembly, furniture, and hobby projects. For prolonged outdoor or high-moisture environments, additional protective measures (such as a sealant or coating) are recommended to maintain performance.