M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel
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M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon SteelM4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel

M4 M5 M6 Truss Head Self Tapping Screws – Bright Zinc Plated Carbon Steel

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$5.75 USD
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In stock (500 units), ready to be shipped

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Description

🔩 Truss Head Self‑Tapping Screws – Zinc Plated Carbon Steel (M4, M5, M6)

Looking for a sturdy, all‑purpose self‑tapper that won't pull through thin material? These Phillips truss head screws are the answer. Manufactured from genuine carbon steel with a bright zinc finish, they deliver reliable corrosion resistance indoors and in mild outdoor settings, while the oversized, flat‑bottomed head spreads clamping force wide — eliminating the need for a separate washer in most jobs. The sharp, deep metric coarse thread cuts straight into sheet metal, wood, plastic, and composite panels, forming a strong, vibration‑proof joint without a pilot hole or tap. Available in the three most‑requested medium‑duty diameters (M4, M5, and M6) and multiple thread lengths, they're perfect for everything from machine assemblies and brackets to camera tripods, hinges, and heavy‑duty shop repairs.

⚙️ Key Features – Zinc Plated Truss Head Self‑Tapping Screws

  • Carbon steel body with a bright zinc‑plated finish offers strong corrosion resistance and a clean, professional look
  • Wide truss head distributes clamp load to stop pull‑through in sheet metal, plastic, and soft wood
  • Self‑tapping thread cuts its own precise mating thread — no pre‑drilling or tapping necessary in thin materials
  • Phillips recess provides a secure, cam‑out‑resistant drive with standard screwdrivers
  • Precise metric sizes: M4, M5, and M6 — covering the majority of medium‑duty fastening applications
  • Fully threaded and heat‑treated to ensure consistent hardness and reliable torque‑to‑failure values
  • Ideal for machinery, automotive brackets, camera tripods, furniture, and general‑shop metal‑to‑wood connections

📋 Technical Specifications – M4/M5/M6 Truss Head Self‑Tapping Screws

Size Thread Diameter (d) Head Diameter (dk) Head Thickness (k) Typical Lengths (mm)* Head Style Drive Material & Finish
M4 4.0 mm 6.9 mm 2.3 mm 10, 12, 16, 20, 25, 30, 40 Truss Head Phillips Carbon Steel, Bright Zinc Plated
M5 5.0 mm 9.0 mm 2.8 mm 12, 16, 20, 25, 30, 40, 50 Truss Head Phillips Carbon Steel, Bright Zinc Plated
M6 6.0 mm 11.9 mm 4.0 mm 16, 20, 25, 30, 40, 50, 60 Truss Head Phillips Carbon Steel, Bright Zinc Plated

* Lengths are thread length only (measured from under the head). Head dimensions show typical values; small tolerances exist per the manufacturer’s specification drawings. Choose your required size and length from the listing options.

❓ Frequently Asked Questions – Zinc Plated Truss Head Self‑Tappers

🔸 What is the difference between a truss head and a pan head?

A truss head has a larger, flatter bearing surface that spreads the clamping force much more evenly. This extra width stops the head from pulling through thin metal or soft wood, making it a great choice when you want the security of a washer without having to add one.

🔸 Can I use these in hardwood without a pilot hole?

In softwood and thin sheet metal, they can often be driven directly. For dense hardwoods or very thick steel, we recommend a small pilot hole — roughly 80% of the screw diameter — to reduce driving torque and prevent snapping.

🔸 Will the zinc plating rust over time?

Zinc plating acts as a sacrificial layer that protects the steel underneath. It holds up very well in indoor environments and mild outdoor conditions. For constant harsh weather or saltwater submersion, a stainless‑steel fastener would be a better choice, but for general workshop and outdoor use, this bright zinc finish is the standard.

🔸 How are the screw lengths measured?

All listed lengths are the thread length only — measured from directly under the truss head to the tip. The head thickness is not included, so you can precisely match the screw to your material stack‑up.

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