M3 M4 M5 Brass Countersunk Flat Self‑Tapping Screws – Phillips Drive $1.36 USD

M3 M4 M5 Brass Countersunk Flat Self‑Tapping Screws – Phillips Drive

Name: M3 M4 M5 Brass Countersunk Flat Self‑Tapping Screws – Phillips Drive
Brand: HomeDIYer
SKU: PENGGB10152x10
Price: 1.36 USD
Availability: InStock

$1.36 USD

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🔩 Brass Countersunk Self‑Tapping Screws – Phillips Flat Head, M3–M5

Add a warm, classic finish to your fastening job with these solid brass countersunk self‑tapping screws. The 90° flat head sits perfectly flush in a standard countersink, leaving a clean, snag‑free surface that looks great on furniture, instruments, decorative metalwork, and visible woodworking joints. Machined from genuine brass, each screw offers natural corrosion resistance without any plating to wear off — the golden tone ages gracefully over time and won’t rust like steel. The sharp, coarse self‑tapping thread cuts its own tight path into sheet metal, wood, plastic, and fiberglass, eliminating the need for a separate tap or pilot hole in most thin materials. Covering M3, M3.5, M4, and M5 diameters with lengths from 6 mm to 40 mm, this range puts a touch of class into electronics, cabinetry, light fixtures, marine trim, and any project where the fastener is meant to be seen.

⚙️ Key Features – Brass Flat Head Self‑Tapping Screws

Solid brass construction – naturally corrosion‑resistant, won’t red‑rust, and provides a warm, gold‑toned look that complements fine woodwork and visible hardware
Countersunk flat head design sits flush for a smooth, professional finish with no protruding edges
Self‑tapping coarse thread cuts into sheet metal, wood, plastic, and composites without a pre‑tap or pilot hole in most applications
Phillips drive recess offers stable, cam‑out‑resistant engagement with common screwdrivers
Available in four metric diameters (M3, M3.5, M4, M5) and a wide range of overall lengths from 6 mm to 40 mm
Anti‑oxidation protection helps preserve the brass finish during storage and initial installation
Ideal for furniture making, musical instruments, electrical grounding, marine trim, and decorative metal‑to‑wood connections

📋 Technical Specifications – Brass Countersunk Self‑Tapping Screws

Thread Diameter	Available Lengths (mm)*	Head Style	Drive	Material
M3	6, 8, 10, 12, 16, 20, 25	Countersunk Flat Head (90°)	Phillips	Brass
M3.5	8, 10, 12, 16, 20, 25, 30	Countersunk Flat Head (90°)	Phillips	Brass
M4	8, 10, 12, 16, 20, 25, 30, 35, 40	Countersunk Flat Head (90°)	Phillips	Brass
M5	10, 12, 16, 20, 25, 30, 35, 40	Countersunk Flat Head (90°)	Phillips	Brass

* Lengths are overall length (including the head). Conforms to DIN 7982 / ISO 7050 dimensional standards.

❓ Frequently Asked Questions – Brass Self‑Tapping Screws

🔸 Will brass screws rust?

No. Brass is an alloy of copper and zinc and does not rust. It will develop a natural patina over time, especially outdoors, but it will not weaken or corrode like steel. The warm gold color ages gracefully and is often appreciated in decorative applications.

🔸 Do I need to drill a pilot hole before driving these screws?

In thin sheet metal or soft wood, you can often drive them directly. For dense hardwoods or thick metal, a small pilot hole is recommended to reduce driving torque and prevent the brass threads from galling. Pilot holes will extend the life of the screw and your driver.

🔸 Are the lengths given including the head?

Yes. All listed lengths are overall length – from the top of the flat head to the tip. This makes it easy to know exactly how far the screw will protrude through your material.

🔸 Can I use these screws for electrical grounding?

Yes, brass is an excellent conductor and is commonly used in electrical terminals and grounding lugs. They are non‑magnetic and provide a reliable connection when used in contact with copper wiring or terminals.