M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws
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M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine ScrewsM1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine ScrewsM1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine ScrewsM1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine ScrewsM1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine ScrewsM1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws

M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws

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By HomeDIYer®

Price:
$4.80 USD
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In stock (500 units), ready to be shipped

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Description

M1.6–M6 Black Stainless Steel A2 Pan Head Phillips Machine Screws — Corrosion-Resistant Fasteners Across 7 Sizes

When you need a reliable, corrosion-resistant fastener that won't stand out in a finished assembly, black A2 stainless steel pan head Phillips machine screws are the go-to choice for electronics assemblers, RC hobbyists, appliance repair technicians, and precision instrument builders. The low-profile pan head sits flush against the surface without countersinking, the Phillips drive works with any standard screwdriver or power tool, and the A2 stainless steel core resists rust in demanding environments where plain steel would fail.

Each screw is a metric pan head Phillips machine screw per DIN 7985 / ISO 7045, made from A2 stainless steel (ISO 3506, equivalent to 304 SS) with a black surface finish. Available in seven thread diameters — M1.6, M2, M2.5, M3, M4, M5, and M6 — with head diameters ranging from 3mm (M1.6) to 12mm (M6). Shaft lengths span 2mm (≈5/64") to 30mm (≈1-3/16") depending on thread size. Pack quantities range from 2 to 200 pieces, with the exact options varying by size.

Typical applications include M2 and M2.5 black stainless pan head screws for electronics enclosures and PCB cover mounting, M3 Phillips machine screws for RC drone and robot frames, M4–M6 black stainless machine screws for appliance panels and light structural assemblies, and general-purpose metric fastening wherever a corrosion-resistant pan head Phillips screw is specified.

🔩 Standard metric coarse thread per ISO 68-1. Head profile per DIN 7985 / ISO 7045 (pan head). Drive: Phillips PH0 (M1.6–M2) / PH1 (M2.5–M3) / PH2 (M4–M6). Material: A2 stainless steel (ISO 3506 / 304 SS). Not compatible with UNC/UNF inch threads.

✅ Key Features of These Black Stainless Steel Pan Head Phillips Machine Screws

  • ⚫Black A2 Stainless Steel Construction — Made from A2 (304) stainless steel with a black surface finish, these screws combine the corrosion resistance of stainless steel with a clean, dark appearance suited for electronics enclosures, RC frames, and visible assemblies where silver hardware would stand out.
  • 🔘Low-Profile Pan Head Design — The rounded pan head per DIN 7985 / ISO 7045 provides a wide bearing surface without requiring a countersunk hole, making these M1.6–M6 pan head Phillips screws ideal for thin panels, PCB covers, and sheet metal assemblies where a flat-bottom head is needed.
  • ➕Phillips Drive — Universal Tool Compatibility — The Phillips cross recess works with any standard PH0, PH1, or PH2 screwdriver or power driver bit, making these black Phillips machine screws accessible for both hand assembly and production-line use without specialized tooling.
  • 📏7 Thread Sizes, M1.6 to M6 — Covers the full range from ultra-small M1.6 screws for miniature electronics to M6 for structural panel fastening, with lengths from 2mm (≈5/64") to 30mm (≈1-3/16") — reducing the need to source from multiple suppliers for a single project.
  • 🛡️A2 Stainless Steel Corrosion Resistance — A2 stainless (304 SS) resists rust and oxidation in indoor and light outdoor environments, making these black stainless machine screws a durable alternative to plain steel or zinc-plated fasteners in humid or moisture-exposed assemblies.
  • 📦Flexible Pack Sizes from 2 to 200 Pieces — Order as few as 2 pieces to verify fit before committing to a bulk pack of 200, or stock up with a 100-piece pack of M3 or M4 black Phillips screws for ongoing production or repair work — pack options vary by size.

📐 Technical Specifications — Black Stainless Steel Pan Head Phillips Machine Screws

Thread Diameters M1.6, M2, M2.5, M3, M4, M5, M6
Thread Standard ISO metric coarse thread per ISO 68-1
Thread Pitches M1.6: 0.35mm | M2: 0.4mm | M2.5: 0.45mm | M3: 0.5mm | M4: 0.7mm | M5: 0.8mm | M6: 1.0mm
Head Style Pan head (rounded top, flat bearing surface)
Head Standard DIN 7985 / ISO 7045
Drive Type Phillips — PH0 (M1.6–M2), PH1 (M2.5–M3), PH2 (M4–M6)
Head Diameters M1.6: 3mm | M2: 5mm | M2.5: 6mm | M3: 7mm | M4: 8mm | M5: 10mm | M6: 12mm
Length Range (under head to tip) 2mm (≈5/64") – 30mm (≈1-3/16") — varies by thread size
Material A2 Stainless Steel (ISO 3506 / 304 SS)
Finish Black surface treatment
Pack Quantities 2, 5, 10, 20, 50, 100, 200 pcs (availability varies by size)
Country of Origin Contact us to confirm
⚠️ Length Note: For pan head screws, the listed length (L) is measured from under the head to the tip — shank length only, not including the head height. This differs from countersunk screws where length includes the head.

❓ Frequently Asked Questions

How do I choose the right length for a pan head Phillips machine screw?

For pan head screws, the listed length (L) is measured from under the head to the tip — shank length only. Choose a length that allows the shank to pass through the material and engage the nut or threaded hole with at least 1.5× the thread diameter of engagement.

Quick inch reference: 2mm ≈ 5/64", 4mm ≈ 5/32", 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 15/32", 16mm ≈ 5/8", 20mm ≈ 25/32", 25mm ≈ 1", 30mm ≈ 1-3/16".

What Phillips screwdriver size do I need for each thread size?

Phillips driver size generally corresponds to screw diameter:

  • M1.6–M2: PH0 (Phillips #0)
  • M2.5–M3: PH1 (Phillips #1)
  • M4–M6: PH2 (Phillips #2)

Always verify with the actual screw recess before driving, as cross-head sizes can vary slightly by manufacturer.

What does A2 stainless steel mean, and how strong are these screws?

A2 stainless steel per ISO 3506 is equivalent to 304 stainless steel — an austenitic alloy with approximately 18% chromium and 8% nickel. Per ISO 3506, A2-70 grade fasteners have a minimum tensile strength of 700 MPa and a minimum yield strength of 450 MPa. These screws are generally suitable for light-to-medium clamping loads in electronics, instrument, and appliance assemblies. For heavy structural or high-vibration applications, contact us to confirm the grade and confirm suitability.

Can these black stainless screws be used outdoors or in humid environments?

A2 (304) stainless steel generally provides good corrosion resistance for light outdoor use in non-marine environments — such as covered outdoor enclosures, garden equipment, or protected assemblies exposed to rain and humidity. For prolonged direct exposure to salt spray, coastal air, or chloride-rich environments, A4 (316) stainless steel is generally more appropriate. The black surface treatment may provide additional protection; contact us to confirm the exact coating process for your application.

Are these screws compatible with standard metric nuts and threaded inserts?

Yes. These are standard metric coarse thread machine screws per ISO 68-1, compatible with standard metric nuts, threaded inserts, and tapped holes of the same pitch:

  • M1.6 × 0.35mm | M2 × 0.4mm | M2.5 × 0.45mm | M3 × 0.5mm
  • M4 × 0.7mm | M5 × 0.8mm | M6 × 1.0mm

They are not compatible with UNC/UNF inch-standard threads. Always verify thread pitch before mixing fastener sources.

What is the head diameter for each thread size?

Head diameters are listed in the variant option as Thread × Length × Head Diameter, per DIN 7985 / ISO 7045 pan head standard:

  • M1.6 → 3mm head | M2 → 5mm head | M2.5 → 6mm head | M3 → 7mm head
  • M4 → 8mm head | M5 → 10mm head | M6 → 12mm head

Verify clearance hole and bearing surface requirements before installation, especially in thin materials.

What are the most common applications for M1.6–M6 black pan head Phillips screws?

These screws are commonly used in:

  • Electronics enclosures and PCB cover mounting (M1.6–M2.5)
  • RC drone, robot, and hobby frame assembly (M2–M3)
  • Small appliance assembly and repair (M3–M4)
  • Furniture hardware and fixture mounting (M4–M6)
  • Precision instrument and optical equipment assembly
  • General-purpose metric fastening where a pan head Phillips drive is specified
🛒 Select your thread size, length, and quantity above, then add to cart — ships from our US warehouse.

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