Screw Shank Coil Nails
Strong grip, no nail pull-out or loosening.
Easy driving, no wood splitting or jams.
Heavy-duty build, stands up to harsh use.
Sinsun Screw Shank Coil Nails | High-Grip Collated Fasteners for Heavy-Duty Applications
Sinsun’s screw shank coil nails (aka twisted shank) offer 30% more pull-out resistance. Perfect for pallets, framing, and fencing. Check the size chart and technical specs. Get a quote today!
Get a Quick QouteProduct Overview & Sinsun Brand Difference
Sinsun Screw Shank Coil Nails, commonly referred to in the industry as twisted shank nails , represent a significant advancement in pneumatic fastening technology. Unlike conventional smooth shank variants that rely solely on friction, these fasteners are engineered with a continuous helical thread machined along the full length of the shank. This distinctive geometry effectively transforms the nail into a high-torque anchoring device; as it is driven into the substrate, the threads rotate into the wood fibers, creating a mechanical interlock that substantially increases withdrawal resistance. The Sinsun variant is manufactured using high-carbon C72 wire, which undergoes a rigorous patenting and drawing process to achieve an optimal balance of tensile strength and ductility. This metallurgical precision ensures the nail penetrates dense hardwoods without fracturing, yet possesses the flexibility to accommodate minor material movements without loosening.
Furthermore, the functional integrity of the Sinsun screw shank nail extends beyond its core material to its surface engineering and collation. Each nail features a sharply honed diamond point designed to cleave wood fibers cleanly, minimizing the splitting often associated with larger diameter fasteners. The shank is available with specialized coatings—including hot-dip galvanization for exterior applications and a clear mechanical galvanization for corrosion resistance without surface build-up—ensuring compatibility with treated lumber and harsh environmental conditions. The nails are precision-collated with a specifically formulated glue that maintains structural integrity during loading and transport yet liquefies instantly upon contact with the driver blade, guaranteeing consistent, jam-free feeding in high-speed pneumatic tools. This integration of robust metallurgy and precise manufacturing defines the Sinsun advantage.
Technical Specifications
Coil Angle:Standard 15°(universal fit for most pneumatic coil nailers).
Shank Design:Precision-machined spiral screw thread (uniform pitch for maximum grip).
Collation Type: Wire-welded (stable, low-jam, consistent feeding even at high speeds).
Head Style:Flat round head (secure seating, prevents pull-through).
Point Type: Diamond point (sharp, reduces wood splitting during driving).
Raw Material: High-tensile carbon steel (resists bending and breakage).
Coil Count:120-240 nails per coil (industry-standard bulk packaging for efficiency).
Certifications: ISO 9001, CE compliant, RoHS approved (meets global industry standards).
Get A Quick Qoute| Size (Length) | Shank Diameter (Gauge) | Head Type | Collation Angle | Coating | Quantity per Coil |
| 50mm (2") | 2.87mm (11 Ga.) | Full Round Head / D-Head | 15° / 21° | Bright / Galvanized | 200-250 |
| 65mm (2.5") | 3.1mm (10 Ga.) | Full Round Head / D-Head | 15° / 21° | Galvanized | 180-200 |
| 75mm (3") | 3.3mm (9 Ga.) | Full Round Head / D-Head | 15° / 21° | Hot-Dip Galvanized | 150-180 |
| 90mm (3.5") | 3.75mm (8 Ga.) | Full Round Head | 15° | Hot-Dip Galvanized | 120-150 |
| 100mm (4") | 4.1mm (6 Ga.) | Full Round Head | 15° | Hot-Dip Galvanized | 90-120 |
Key Applications & Use Cases
1. Put together heavy-duty pallets and crates
Logistics business is challenging. Forklifts get stuck, pallets fall, and freight is moved. Using a coil pallet nail with a screw shank helps keep the stringers from coming loose from the deck boards. Our twisted shank digs in deeper than a smooth nail, which relies on friction. This prevents the "pop-up" effect that damages goods. Sinsun nails provide Euro-pallet specifications structural integrity.
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2. Wall Plates and Framing in wood
Uplift pressure is always a danger when attaching wall plates to concrete or connecting timber frames, especially in areas prone to cyclones. A screw shank nail works like a screw to keep the frame from coming apart when forces pull it apart. For this job, we suggest our 75mm and 90mm galvanized versions. The sharp diamond point penetrates through knots and hardwoods without pre-drilling, saving you hours on the job site.
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3. Fencing and its Uses in the Country
Wind vibration and animal impact are fencing contractors' enemies in South Africa and Australia. Fence rails bend constantly. Because of this movement, a standard nail will "back out" over time. Sinsun's ring shank coil nails bend with wood without losing their grip. They won't come out once they're in, which will keep your fence lines tight and professional for years.
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4. Exterior siding and cladding
Exterior siding and cladding requires a nail that won't come out over time when installing fiber cement or wood siding. The "threads" on our coil siding nails hold the siding tightly to the wall and keep moisture from getting in, which makes it easier for the painter to achieve a smooth finish.
Get a Quick QouteWhat Our Customers Are Saying
We don't just sell nails; we solve fastening problems. Here is feedback from the field.
“
Safety is very critical to us here, and we follow TÜV standards. Six months ago, we switched to Sinsun screw shank nails for our concrete formwork. When you strip the forms, the holding power is amazing. There is no nail popping, and our Senco tools work perfectly with the coils. Quality control is always the same; every box is the same.
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The shear capacity tests made me believe.The biggest problem we had was getting returns from customers because pallets broke down while they were on their way. Those complaints have stopped since we switched to Sinsun twisted shank nails. Hot-dip galvanization also doesn't rust in humid storage conditions. "Good product at a fair price." Now we are set for the whole project."
“
They either bend or hold nothing. The Sinsun 3.1mm screw shank nails go in straight and hold tight. We only use them for roof battens now. They trust the guys on site.
Frequently Asked Questions
Q: What is the difference between a nail with a screw shank and a nail with a ring shank?
A: That's an excellent question because people often use the two terms to mean the same thing. A "ring shank" has horizontal rings, while a "screw shank" (or twisted shank) has a thread that circles around in a circular motion. Both are harder to pull out than smooth shanks. We make both at Sinsun, but our "screw shank" line has a twisting action that continues, which works best in soft woods and treated lumber.
Q: Can I use Sinsun coil nails with my Bostitch or Senco nail gun?
A: Yes, compatibility is very important. We glue our nails together to meet 15-degree and 21-degree coil nailer standards. But you need to check the collation angle and wire gauge first. You need 15-degree nails if you use a 15-degree tool. I can check the fit if you tell me what model you have.
Q: Why do these nails twist as I drive them?
A: Some twisting is part of the design. The nail follows the shank's helix as it penetrates into the wood. This is what makes the locks stronger. If they are twisting too much and not sinking in the head, it usually means that the air pressure is too low or that the wood is very dense, like ironbark. Try raising your PSI a little bit.
Q: Do you have a coating that keeps black streaks away on cedar siding?
A: Yes, of course. Standard galvanized nails can react with cedar and redwood tannins and leave streaks. For these uses, we suggest our Hot-Dipped Galvanized or Stainless Steel versions. We also have a mechanical galvanization option that gives a smooth, even coating that is suitable for visible architectural work.
Q: What’s the difference between screw shank and ring shank coil nails?
A:Screw shank twists for stronger grip; ring shank is ribbed, better for light loads.
Q:Will these fit my 15° coil nailer?
A:Yes, universal 15° angle fits all standard pneumatic tools.
Q:Can these be used for pressure-treated lumber?
A:Yes, hot-dip galvanized variants are safe and corrosion-resistant.
Q:Are stainless steel screw shank coils available?
A:Yes, for coastal or high-corrosion environments.
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