Black Concrete Nails
Black Coating, No Peeling or Rust
High Hardness, No Bending During Use
Bulk Supply, On-Time Delivery
Sinsun Black Concrete Nails: Discreet Fastening for Finished Masonry
Sinsun black concrete nails with hardness >HRC 50°. Black phosphate coating for corrosion resistance and low visibility. Spiral, twilled, and straight fluted shanks. 5–20 gauge, 0.5"–10" lengths. Factory direct. 19 years of heat treatment expertise. Contact us for a free quote and sample.
Get a Quick QouteSinsun Black Concrete Nails: Engineered for Applications& Where Appearance Matters
Sinsun's black concrete nails are made with high carbon steel and black oxide coating. This makes them very hard and gives them great surface performance. We are a fastener factory that focuses on business-to-business (B2B) sales. We have been in business for more than 15 years and specialize in manufacturing and selling bare concrete nails in large quantities. By cutting out the middleman, we can offer global buyers factory-direct prices that are competitive.
Our black concrete nails have a smooth, wear-resistant black oxide coating that makes them more resistant to rust and look better on the surface. This renders them suitable for situations where appearance is paramount. To avoid problems like the coating peeling, bending, or rusting, every batch undergoes a strict quality check. This includes testing for hardness, adhesion, and corrosion resistance.
We have three main types of black concrete nails that can be used for different types of construction. We also offer many options for customizing the size, shank type, coating thickness, and packaging. Sinsun is a reliable and long-term partner for B2B buyers of black concrete nails. They can manufacture 500 tons of nails a month, offer professional technical support, and provide quick after-sales service.
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| Parameter | Specification |
| Material | Carbon steel |
| Material Model | High-carbon steel (C70, C80 grades) |
| Hardness | > HRC 50° (case-hardened) |
| Coating | Black phosphate (matte black finish) |
| Corrosion Resistance | 24–72 hours salt spray (interior use) |
| Head Styles | Round, oval, headless (as specified) |
| Head Diameter | 0.051" – 0.472" (1.3mm – 12mm) |
| Shank Types | Smooth, straight fluted, twilled fluted, spiral |
| Shank Diameter | 5–20 gauge (0.080" – 0.312") |
| Gauge Chart | 20 ga (0.080") – 5 ga (0.375") |
| Length Range | 0.5" – 10" (12mm – 250mm) |
| Point Type | Diamond point or blunt (as specified) |
| Surface Treatment | Black phosphate (standard), Black oxide (special order) |
| Packaging (Standard) | 25 kg/carton |
| Packaging (Small) | 1kg, 1.5kg, 2kg, 3kg, 5kg boxes |
| Packaging (Custom) | As per customer requirements |
| MOQ | 500 kg (stock sizes) / 2,000 kg (custom) |
| Lead Time | 15 days (stock) / 30–45 days (production) |
| Gauge | Diameter (inches) | Diameter (mm) | Common Lengths | Typical Application |
| 20 ga | 0.080" | 2.0mm | 0.5" – 1.5" | Light gauge track, lath, small signs |
| 18 ga | 0.105" | 2.7mm | 0.75" – 2" | Metal furring, thin materials, displays |
| 16 ga | 0.125" | 3.2mm | 1" – 3" | General purpose, sign brackets |
| 14 ga | 0.156" | 4.0mm | 1.5" – 4" | Furring strips, dark wood trim |
| 12 ga | 0.187" | 4.8mm | 2" – 5" | Heavy furring, black-painted steel |
| 10 ga | 0.250" | 6.4mm | 2.5" – 6" | Timber framing, exhibition structures |
| 8 ga | 0.312" | 7.9mm | 3" – 8" | Heavy duty, architectural features |
| 5 ga | 0.375" | 9.5mm | 4" – 10" | Special applications, custom orders |
Applications: Where Black Concrete Nails
Decorating Commercial Buildings
Industrial equipment installation
Residential Construction
Outdoor Dark-Substrate Fixing
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