#6 #7 #8 #10 #12 #14 Flat Head Self Drilling Screws – 304/410 Stainless & Zinc Plated Steel

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#6 #7 #8 #10 #12 #14 Flat Head Self Drilling Screws – 304/410 Stainless & Zinc Plated Steel

Name: #6 #7 #8 #10 #12 #14 Flat Head Self Drilling Screws – 304/410 Stainless & Zinc Plated Steel
Brand: HomeDIYer
Price: 8.2 USD
Availability: InStock

HomeDIYer

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By HomeDIYer®

Size(Diameter x Length): φ3.5x13mm(NO.6x1/2")

Screw Material: Carbon Steel Blue Zinc Plated

Amount(pcs): 10

Preis:

$8.20 USD

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Verfügbar (500 Stück), versandbereit

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🔩 Flat Head Self‑Drilling Screws – 304/410 Stainless & Zinc Plated Steel

Get a clean, flush finish while drilling and fastening in one step with these flat-head self‑drilling screws. The countersunk 90° head sits perfectly flush in sheet metal, wood, and composite panels, leaving nothing to snag. The self‑drilling tip eliminates pilot holes in thin steel up to the thicknesses listed for each diameter, saving time on roofing, siding, and framing jobs. Choose 410 stainless steel for high hardness and wear resistance, A2/304 stainless for superior corrosion protection in outdoor or humid environments, or carbon steel with blue zinc plating for an economical, indoor‑oriented option. Covering the complete range from #6 (3.5 mm) up to #14 (6.3 mm), this series provides a precision fastener for light‑ to medium‑duty sheet metal, plastic, and wood connections.

⚙️ Key Features – Self‑Drilling Flat Head Screws

Self‑drilling point bores directly through sheet steel, aluminum, and wood without a pilot hole — one‑step installation
Countersunk 90° flat head sits flush for a smooth, snag‑free surface on panels, roofing, and metal brackets
Material options: 304 stainless (A2) for marine‑grade corrosion resistance; 410 stainless for higher hardness; carbon steel with blue zinc plating for indoor use
Imperial sizes: #6 (3.5 mm), #7 (3.9 mm), #8 (4.2 mm), #10 (4.8 mm), #12 (5.5 mm), #14 (6.3 mm) — with exact head dimensions and recommended material thicknesses
Phillips drive provides a secure, cam‑out‑resistant grip with standard screwdrivers
Deep, clean threads ensure maximum holding power and vibration resistance
Complying with DIN 7504‑P standards for consistent fit and reliable performance
Ideal for metal roofing, wall panels, light steel frames, automotive trim, air‑conditioning brackets, and general sheet metal assembly

📋 Technical Specifications – Self‑Drilling Flat Head Screws

Size (Imperial)	Thread Diameter (d)	Head Diameter (dk)	Head Thickness (k)	Steel Thickness (Angle Iron)	Typical Lengths (mm)*	Drive	Material Options
#6	3.5 mm	—	—	—	13–50	Phillips	304 / 410 SS, Carbon Steel Blue Zinc
#7	3.9 mm	7.25 mm	2.75 mm	2.0–3.0 mm	13–50	Phillips	304 / 410 SS, Carbon Steel Blue Zinc
#8	4.2 mm	7.90 mm	3.15 mm	3.0–4.0 mm	13–50	Phillips	304 / 410 SS, Carbon Steel Blue Zinc
#10	4.8 mm	9.30 mm	4.15 mm	4.0–6.0 mm	16–60	Phillips	304 / 410 SS, Carbon Steel Blue Zinc
#12	5.5 mm	10.8 mm	5.31 mm	4.0–8.0 mm	19–70	Phillips	304 / 410 SS, Carbon Steel Blue Zinc
#14	6.3 mm	—	—	—	25–80	Phillips	304 / 410 SS, Carbon Steel Blue Zinc

* Lengths are measured from under the head (thread length only). Head dimensions for #6 and #14 are not provided; approximate values can be seen in product images. 304 stainless is not recommended for drilling into iron/steel due to lower hardness. Blue zinc carbon steel is economical and suitable for indoor use.

❓ Frequently Asked Questions – Self‑Drilling Flat Head Screws

🔸 Do I really not need a pilot hole?

No, not for thin sheet metal and wood within the thickness ranges listed in the table. The self‑drilling tip will penetrate the material and form its own hole. For thicker steel, a pilot hole may reduce driving torque, but in standard applications, they are one‑step fasteners.

🔸 When should I choose 304 stainless over 410?

304 (A2) stainless steel offers excellent corrosion resistance for outdoor, coastal, or damp environments and will not red‑rust. However, 410 stainless steel is harder and more suitable for drilling into tougher materials. If you are drilling into iron or thick steel, 410 or carbon steel is better; for rust‑prone areas, choose 304.

🔸 How are the lengths measured — including the head?

No. All lengths are measured from under the head to the tip. The head sits flush, and its thickness does not add to the listed length. This makes it easy to select a screw that fully penetrates your material.

🔸 What Phillips bit size is needed for these screws?

Sizes #6 and #7 usually use a #2 Phillips bit. #8 and #10 use a #2 or #3 bit, and #12 and #14 typically require a #3 bit. Always use a sharp bit to avoid cam‑out.

#6 #7 #8 #10 #12 #14 Flat Head Self Drilling Screws – 304/410 Stainless & Zinc Plated Steel

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Beschreibung

🔩 Flat Head Self‑Drilling Screws – 304/410 Stainless & Zinc Plated Steel

⚙️ Key Features – Self‑Drilling Flat Head Screws

📋 Technical Specifications – Self‑Drilling Flat Head Screws

❓ Frequently Asked Questions – Self‑Drilling Flat Head Screws

🔸 Do I really not need a pilot hole?

🔸 When should I choose 304 stainless over 410?

🔸 How are the lengths measured — including the head?

🔸 What Phillips bit size is needed for these screws?

#6 #7 #8 #10 #12 #14 Flat Head Self Drilling Screws – 304/410 Stainless & Zinc Plated Steel

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