M3–M6 Hex Drive Pan Head Self-Tapping Screws – 304 Stainless Steel $4.87 USD

M3–M6 Hex Drive Pan Head Self-Tapping Screws – 304 Stainless Steel

Name: M3–M6 Hex Drive Pan Head Self-Tapping Screws – 304 Stainless Steel
Brand: HomeDIYer
SKU: WXBGB02394x5
Price: 4.87 USD
Availability: InStock

$4.87 USD

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🔩 Hex Socket Pan Head Self‑Tapping Screws – 304 Stainless (M3–M6)

When a standard Phillips drive won’t cut it, these Allen‑drive pan head self‑tapping screws give you the control and torque you need. Machined from genuine A2 / 304 stainless steel, they stand up to moisture, humidity, and outdoor exposure without a surface coating that wears thin. The internal hex drive lets you tighten with confidence — less cam‑out, more force — perfect for tight spots where a driver can slip. The sharp self‑tapping thread cuts its own path into sheet metal, plastic, wood, and composites, so there’s no need for separate nuts or tapped holes. Available in the four most popular diameters (M3, M4, M5, M6) and lengths from 6 mm to 40 mm, this series covers everything from electronics brackets to structural metalwork.

⚙️ Key Features – 304 Stainless Pan Head Self‑Tapping Screws

304 (A2) stainless steel delivers permanent corrosion resistance — won’t red‑rust in wet or outdoor conditions
Hex socket drive (Allen) minimizes cam‑out and lets you apply higher torque than a Phillips head
Self‑tapping coarse thread cuts cleanly into sheet metal, wood, plastic, and fiberglass — no pre‑tap required
Covers M3, M4, M5, and M6 diameters with lengths from 6 mm to 40 mm — a size for every light‑ to medium‑duty job
Fully threaded from tip to head for maximum grip in thin materials
Non‑magnetic and work‑hardening — safe for electronics and sensitive installations
Natural stainless finish — no plating to chip or fade

📋 Technical Specifications – Hex Drive Self‑Tapping Screws

Size	Thread Diameter	Available Lengths (mm)*	Head Style	Drive	Material
M3	3.0 mm	6, 8, 10, 12, 16, 20	Pan Head	Hex (Allen) 2 mm	304 Stainless
M4	4.0 mm	10, 12, 16, 20, 25, 30	Pan Head	Hex (Allen) 2.5 mm	304 Stainless
M5	5.0 mm	16, 20, 25, 30, 35, 40	Pan Head	Hex (Allen) 3 mm	304 Stainless
M6	6.0 mm	16, 20, 25, 30, 35, 40	Pan Head	Hex (Allen) 4 mm	304 Stainless

* Lengths are thread length only (not including head). Full‑thread design. All sizes metric coarse thread.

❓ Frequently Asked Questions – 304 Stainless Pan Head Screws

🔸 Can I really drive these without a pilot hole?

In thin sheet metal up to about 1 mm and most plastics, yes. The sharp thread will form its own path. For thicker metals or hardwoods, a small pilot hole (about 80% of the screw diameter) will reduce driving torque and give you a perfect thread.

🔸 What size Allen wrench do I need?

M3 uses a 2 mm hex key, M4 uses 2.5 mm, M5 uses 3 mm, and M6 uses a 4 mm hex key. A standard metric hex set will cover all sizes.

🔸 Is 304 stainless steel suitable for outdoor use?

Absolutely. 304 stainless resists rust in rain, humidity, and mild chemicals. For constant saltwater exposure, 316 is better, but for outdoor furniture, automotive trim, and general workshop use, 304 lasts for years without red rust.

🔸 Are the lengths measured from under the head?

Yes, all listed lengths are the thread length only. For example, an M4×20 screw has 20 mm of thread below the pan head.