Black Concrete Steel Nails – High Hardness & Strong Penetration
Black Concrete Nails are hardened carbon steel fasteners specially designed for concrete and brick applications. Their short, thick shank structure ensures strong impact resistance and excellent holding strength.
The boiled black finish gives a traditional dark appearance and basic rust protection, widely preferred in South Asia, the Middle East, and African markets.
Free samples are available for inspection before placing large orders.
Product Overview
Black Concrete Steel Nails are specially designed for fastening into hard materials such as concrete walls, cement blocks, brick structures, and masonry surfaces. Manufactured from high-quality carbon steel 45# or 55#, these nails are heat-treated to achieve high hardness and strong penetration ability.
With hardness reaching above HRC 50°, our black concrete nails ensure superior impact resistance and bending strength, making them suitable for heavy-duty construction and industrial applications.
Technical Specifications
- Material: Carbon Steel 45# / 55#
- Hardness: > HRC 50°
- Shank Type: Smooth Shank, Straight Grooved Shank, Spiral Shank, Angular Spiral Shank.
Different shank designs provide different holding power levels. Spiral and grooved types offer stronger grip and improved anti-pull-out performance compared to smooth shank nails.
- Point Type: Diamond Point, Needle Point
The sharp diamond or needle point design ensures easier penetration into concrete and reduces cracking during installation.
- Head Type: Flat Head, P Head, T Head, Flat Round Head, Round Head
Various head designs meet different construction needs, whether for strong surface contact, better load distribution, or specific installation requirements.
- Surface Treatment Options: Galvanized (anti-rust protection), Boiled Black (black oxide finish), Fine Blued.
The boiled black finish provides a traditional dark appearance and basic corrosion resistance, making it popular in many developing markets. Galvanized options are suitable for humid environments.
Packing Details
We offer flexible packaging solutions to meet wholesale and retail requirements:
1. Bulk Packing
25kg per carton
2. Small Packing
500g per small box, 50 boxes per carton
1kg per small box, 25 boxes per carton
1kg per plastic bag, 25 bags per carton
3. Customized Packing
Special weight packing available upon request
With or without pallet loading
OEM private label packaging is supported.
1. High Hardness & Strong Penetration
With hardness exceeding HRC 50°, these nails easily penetrate concrete and masonry without bending or breaking.
2. Excellent Holding Power
Spiral and grooved shank designs increase friction inside concrete, providing superior pull-out resistance.
3. Durable Material
Made from 45#/55# carbon steel, ensuring high tensile strength and long service life.
4. Multiple Options
Various head types, point types, shank designs, and surface treatments are available to meet different project requirements.
5. Market-Proven Quality
Widely accepted in South Asia, Middle East, and African construction markets.
6. Flexible Packaging
Suitable for wholesalers, hardware distributors, and construction suppliers.
If you need FOB Qingdao quotation, sample confirmation, or customized production, please contact us with your required size, shank type, and packing details.
FAQ
Q1: Are you a trading company or a manufacturer?
A: We are a direct manufacturer with our own factory. With over 30 years of production experience in nails and fasteners, we ensure stable quality, competitive pricing, and reliable delivery.
Q2: How long is your delivery time?
A: If the goods are in stock, delivery usually takes 5-10 days. For customized or large-volume orders that are not in stock, the production time is generally 30-45 days, depending on the order quantity and specifications.
Q3: Do you provide samples? Are they free or charged?
A: Yes, we can provide samples free of charge for quality evaluation. However, the freight cost will be borne by the customer. Freight can be collected or prepaid based on mutual agreement.
Q4: What are your payment terms?
A: For payments ≤ USD 1,000: 100% payment in advance.
For payments ≥ USD 1,000: 30% T/T deposit in advance, and the 70% balance to be paid before shipment.
Other payment terms can be discussed depending on order value and cooperation history.
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