Brass Phillips Countersunk Machine Screws — Pozi Flat Head, M2 to M8 $1.58 USD

Brass Phillips Countersunk Machine Screws — Pozi Flat Head, M2 to M8

Name: Brass Phillips Countersunk Machine Screws — Pozi Flat Head, M2 to M8
Brand: HomeDIYer
SKU: GYYKMGBRT19057x5
Price: 1.58 USD
Availability: InStock

$1.58 USD

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Brass Phillips & Pozi Countersunk Machine Screws — Flush Flat Head, M2 to M8, 4mm to 60mm

A screw head that sticks up where it shouldn't is more than an eyesore — it catches fingers, snags fabric, and ruins a clean finish. These brass Phillips and Pozi countersunk machine screws are built for woodworkers, furniture makers, instrument builders, and hardware enthusiasts who need a fastener that disappears into the surface and stays there. The flat conical head seats flush with or below the material for a smooth, professional result every time.

Each screw is machined from solid brass, delivering a warm gold tone and natural corrosion resistance without surface coatings that can chip or flake. Available in seven metric diameters — M2, M2.5, M3, M4, M5, M6, and M8 — with lengths ranging from 4mm (5/32") to 60mm (2-3/8") depending on diameter. Pack sizes of 5, 10, 20, and 50 pieces let you order exactly what your project needs without overstocking.

These brass countersunk screws are a natural fit for furniture and cabinetry assembly where a flush, attractive fixing is required; for electronics enclosures and instrument bodies where non-magnetic, corrosion-resistant fasteners are essential; and for decorative hardware, hinges, and fittings where the gold brass tone complements the surrounding finish.

🔩 Compatibility: ISO metric coarse-pitch thread — compatible with standard metric nuts, threaded inserts, and tapped holes (M2–M8). Requires a pre-drilled countersunk hole for a flush finish. Use a Phillips #0–#3 or Pozi PZ0–PZ3 bit matched to the screw diameter.

✅ Key Features of These Brass Phillips Countersunk Machine Screws

⭐Flush Countersunk Flat Head — The 90° conical underside seats flush with or below the material surface in a pre-drilled countersunk hole, eliminating protruding heads on finished panels, furniture faces, and instrument bodies.
🛡️Solid Brass — No Coating to Peel — Machined from solid brass rather than plated steel, these screws resist corrosion naturally. There is no surface coating to chip, flake, or expose a rust-prone base metal underneath.
🟡Warm Gold Tone for Visible Fixings — The natural brass finish complements wood, leather, and decorative hardware. Ideal for visible fixings in cabinetry, furniture, musical instruments, and decorative fittings where fastener appearance matters.
🔄Phillips & Pozi Drive Compatibility — Works with standard Phillips cross-head bits and Pozi (Pozidriv) bits. Pozi drive provides additional cam-out resistance for cleaner, more controlled driving — especially useful in repetitive assembly work.
📏Confirmed Size Range: M2–M8, 4–60mm — Seven diameters with lengths from 4mm (5/32") to 60mm (2-3/8") cover miniature electronics fixings through medium-duty structural connections in a single product family.
🧲Non-Magnetic Brass Construction — Brass is non-magnetic, making these screws suitable for use near sensitive electronics, precision instruments, and equipment where magnetic fasteners would cause interference or measurement errors.

📐 Technical Specifications — Brass Countersunk Machine Screws

Material	Solid Brass (CW614N / CZ121 equivalent)
Finish	Natural brass, uncoated (warm gold tone)
Head Style	Countersunk (Flat Head) — 90° included angle
Drive Type	Phillips (Cross) / Pozi (Pozidriv)
Thread Standard	ISO Metric, coarse pitch
Available Diameters	M2, M2.5, M3, M4, M5, M6, M8
Length Range by Diameter	M2: 4–10mm (5/32"–3/8") · M2.5: 4–12mm · M3: 5–25mm (3/16"–1") · M4: 6–40mm (1/4"–1-9/16") · M5: 8–40mm · M6: 8–50mm (5/16"–2") · M8: 12–60mm (1/2"–2-3/8")
Pack Quantities	5, 10, 20, 50 pieces
Corrosion Resistance	Good — suitable for indoor, humid, and light outdoor use
Magnetic	Non-magnetic
Tensile Strength	Typically 340–500 MPa (brass alloy dependent)
Recommended Applications	Woodworking, furniture, cabinetry, electronics enclosures, musical instruments, decorative hardware, light outdoor fixtures
Country of Warehouse	United States

❓ Frequently Asked Questions

How do I choose the right screw length?

A general rule: the screw should penetrate the receiving material by at least 2–3 times the screw diameter. For example, an M4 screw (4mm diameter) should ideally grip at least 8–12mm (5/16"–1/2") into the base material. If joining two panels, add the top panel thickness to the required grip depth. Reference: 10mm ≈ 3/8", 16mm ≈ 5/8", 25mm ≈ 1", 50mm ≈ 2".

What load can brass machine screws handle?

Brass is generally softer than steel, with a tensile strength typically in the range of 340–500 MPa depending on alloy and manufacturing process. These screws are well-suited for light-to-medium duty fastening in wood, plastic, and soft metals. For high-load structural applications, stainless steel or grade 8.8 steel screws are generally recommended instead.

Are these screws suitable for outdoor use?

Brass offers good natural corrosion resistance and performs well in humid, indoor, and light outdoor environments. Because these screws are solid brass with no surface coating, there is nothing to peel or flake. For prolonged direct exposure to saltwater or harsh coastal conditions, a marine-grade stainless steel fastener is generally a better choice. For most sheltered outdoor and decorative applications, brass is a reliable and attractive option.

Are these compatible with standard metric nuts and threaded inserts?

Yes. These are ISO metric coarse-pitch machine screws fully compatible with standard metric nuts, threaded inserts, and tapped holes manufactured to ISO metric standards. The size designation (M2, M2.5, M3, M4, M5, M6, M8) refers to the nominal thread diameter in millimeters. They are not compatible with imperial UNC or UNF threads.

What is the difference between Phillips and Pozi drive, and which bit should I use?

Phillips (cross) drive has four tapered slots designed to cam out under high torque. Pozi (Pozidriv) adds secondary slots at 45 degrees, providing more contact area and significantly reducing cam-out. Both drives are compatible with the countersunk head on these screws. For best results, match the bit type to the screw marking and use the correct size: PZ0 for M2–M2.5, PZ1 for M3–M4, PZ2 for M5–M6, PZ3 for M8.

Do I need to pre-drill a countersunk hole?

Yes — for a flush or sub-flush finish, pre-drill a pilot hole and then use a countersink bit to create the conical recess matching the screw head angle (typically 90 degrees for metric countersunk screws). Without countersinking, the head will sit proud of the surface. In softwoods, the head may partially self-countersink, but a dedicated countersink bit gives the cleanest, most consistent result.

Which pack size should I order?

Choose based on your project scale: 5 pieces for small repairs or testing a fit, 10 pieces for small projects, 20 pieces for medium builds, and 50 pieces for larger production runs or workshop stock. Larger packs offer better value per screw. Select your preferred size and quantity from the options above.

🛒 Select your diameter, length, and pack size above, then add to cart — ships from our US warehouse.