M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS - HomeDIYer
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M3 Phillips Round Pan Head Machine Screws — Carbon Steel, 4–30mm, 100–500 PCS

HomeDIYer
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By HomeDIYer®

Price:
$11.87 USD
Stock:
In stock (500 units), ready to be shipped

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Description

M3 Phillips Round Pan Head Machine Screws — Reliable Fastening for Electronics, DIY & Light Assembly

Whether you're assembling a PC case, securing a PCB to a standoff, or building out a custom enclosure, running out of the right M3 screw mid-project is a real frustration. These M3 Phillips round pan head machine screws are stocked in bulk packs so hobbyists, makers, and small-shop technicians always have the right size on hand without placing a new order every week.

Each pack contains carbon steel M3 Phillips round pan head machine screws with a thread diameter of 3mm and a pitch of 0.5mm (ISO metric standard). Lengths range from 4mm (≈5/32") to 30mm (≈1-3/16"), available in packs of 100, 200, 300, 400, or 500 pieces. Three surface finishes are offered: Bright Nickel (shiny silver), Black Zinc (matte dark), and White Zinc (clean silver-gray).

Typical use cases include securing electronics enclosures and PCB assemblies, fastening sheet metal panels in HVAC and appliance manufacturing, and general-purpose machine screw applications in furniture hardware, robotics frames, and 3D-printer builds where M3 pan head screws are the de facto standard fastener.

🔩 Compatibility: ISO metric M3 × 0.5mm thread pitch — fits standard M3 nuts, hex standoffs, threaded inserts, and tapped holes per ISO 68-1. Driver: #1 Phillips (PH1) bit.

✅ Key Features of These M3 Phillips Pan Head Machine Screws

  • 🔩Pan Head Profile — The wide, low-profile round pan head distributes clamping load over a larger bearing surface, making it well-suited for thin panels, plastic housings, and PCB mounting without cracking or deforming the material.
  • ⚙️Phillips Cross Drive — Standard #1 Phillips recess (PH1) works with virtually every power driver and hand screwdriver, reducing the need for specialty tooling in mixed-fastener workshops.
  • 🛡️Three Finish Options — Bright Nickel for a polished consumer-electronics look, Black Zinc for low-visibility industrial assemblies, and White Zinc for general indoor corrosion resistance — all applied over carbon steel for consistent base strength.
  • 📏Wide Length Range — Fourteen length options from 4mm (≈5/32") to 30mm (≈1-3/16") cover the most common M3 machine screw applications, from shallow panel fastening to deeper structural engagement.
  • 📦Bulk Pack Quantities — Available in 100, 200, 300, 400, or 500-piece packs so production runs, repair shops, and active makers can stock up and reduce per-unit cost on frequently used M3 pan head screws.
  • 🔧ISO Metric Thread Standard — M3 × 0.5mm pitch conforms to ISO 68-1, ensuring compatibility with off-the-shelf M3 nuts, brass inserts, nylon standoffs, and tapped holes across electronics and mechanical assemblies worldwide.

📐 Technical Specifications — M3 Phillips Round Pan Head Machine Screws

Head Type Round Pan Head (Phillips Drive)
Drive Type Phillips #1 (PH1)
Thread Diameter M3 (3mm / ≈0.118")
Thread Pitch 0.5mm (ISO metric coarse)
Available Lengths 4mm (≈5/32"), 5mm (≈3/16"), 6mm (≈1/4"), 8mm (≈5/16"), 9mm (≈11/32"), 10mm (≈3/8"), 12mm (≈15/32"), 14mm (≈9/16"), 15mm (≈19/32"), 16mm (≈5/8"), 18mm (≈45/64"), 20mm (≈25/32"), 25mm (≈1"), 30mm (≈1-3/16")
Material Carbon Steel
Surface Finish Bright Nickel / Black Zinc / White Zinc (see variant options)
Thread Standard ISO 68-1 (Metric)
Pack Quantity 100 / 200 / 300 / 400 / 500 PCS
Tensile Strength See variant options — contact us to confirm grade
Country of Origin See variant options
⚠️ Note: Finish availability varies by length. Not all finishes are offered in every length. Check the variant selector above to confirm your combination is in stock.

❓ Frequently Asked Questions

How do I choose the right length for M3 pan head screws?

A general rule: the screw length should equal the thickness of the material being fastened plus enough thread engagement in the receiving part — typically 1.5× to 2× the thread diameter. For M3 screws, that means at least 4.5–6mm of thread engagement. For example, if you're fastening a 6mm panel into a tapped hole, a 12mm (≈1/2") screw is generally a good starting point. Always measure your stack-up before ordering.

What is the load capacity of M3 carbon steel machine screws?

M3 carbon steel machine screws are generally rated for light-to-medium clamping loads. Exact tensile strength depends on the steel grade; these screws are typically suitable for electronics enclosures, small appliances, and light structural assemblies. For heavy-load or safety-critical applications, contact us to confirm the grade before ordering.

Are these screws suitable for outdoor or corrosive environments?

The bright nickel and white zinc finishes offer moderate corrosion resistance suitable for indoor and mildly humid environments. Black zinc provides a decorative dark finish with similar protection. For prolonged outdoor exposure or salt-spray environments, a stainless steel alternative is generally recommended. Contact us if you need guidance on finish selection.

What thread standard do these M3 screws follow?

These screws follow the ISO metric thread standard (M3 × 0.5mm pitch), which is the most common M3 thread pitch used worldwide. They are compatible with standard M3 nuts, threaded inserts, and tapped holes machined to ISO 68-1 specifications.

Which finish should I choose — bright nickel, black zinc, or white zinc?

Choose bright nickel for a shiny silver appearance common in electronics and consumer products. Black zinc gives a matte dark look often used in automotive and industrial assemblies where a low-visibility fastener is preferred. White zinc offers a clean silver-gray finish with good corrosion resistance for general-purpose indoor use. All three finishes are applied over carbon steel.

What driver bit do I need for these screws?

These screws use a Phillips (cross) drive. For M3 pan head screws, a #1 Phillips bit (PH1) is typically the correct size. Using the wrong size bit can strip the recess, so always verify the fit before applying torque.

Can I use these screws with plastic or PCB standoffs?

Yes. M3 Phillips pan head screws are one of the most common fasteners used with PCB standoffs, plastic enclosures, and 3D-printed parts. The wide, flat underside of the pan head distributes clamping force over a larger area, reducing the risk of cracking or deforming softer materials.

🛒 Select your material, size, and quantity above, then add to cart — ships from our US warehouse.

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