Industrial Nuts – Engineered for Strength, Precision & Global Standards
Product Introduction
SM Fastners is a leading manufacturer and exporter of high-performance industrial nuts crafted to meet the needs of global construction, engineering, machinery, and energy sectors. Our nuts are available in a wide range of standards, threads, finishes, and strength grades, offering exceptional durability, torque resistance, and corrosion protection.
With advanced in-house manufacturing, automated threading, and 100% inspection systems, we ensure that every nut meets strict international specifications for fit, finish, and functionality—whether you’re assembling bridges or high-speed equipment.
Types of Nuts We Manufacture
We supply both standard and custom nuts, covering all major types and specifications, including:
- Hex Nuts (DIN 934 / ISO 4032) – Standard fastening with bolts and threaded rods
- Heavy Hex Nuts (ASTM A563) – For structural steel and high-load applications
- Lock Nuts / Nylock Nuts (DIN 985 / 982) – Nylon insert prevents loosening under vibration
- Flange Nuts – Built-in washer distributes load and prevents surface damage
- Cap Nuts / Dome Nuts – Aesthetic and protective coverage for exposed threads
- Square Nuts – Used in tight spaces and historical restorations
- Wing Nuts – Hand-tightening, often used for temporary fastening
- Custom Nuts – Special designs as per client drawing, with threading, slotting, or knurling
- And Much More
Thread Profiles: Metric (Coarse/Fine), UNC, UNF, BSW, BSP
Right-hand and left-hand threads available on request.
Material & Finishing Options
We manufacture nuts using high-quality raw materials suitable for all environments, including marine, chemical, automotive, and structural industries.
Base Materials:
- Stainless Steel (A2-70, A4-80, B8, B8M)
- Mild Steel
- High-Tensile Steel (Grades 8, 10)
- Brass (Electrical / Decorative)
- Alloy Steel (For petrochemical, power plants)
Surface Coatings:
- Zinc Plated (Clear / Yellow)
- Black Oxide
- Nickel / Chrome Plating
- Dacromet / Xylan / PTFE
- Hot-Dip Galvanized (HDG)
- Passivation (for stainless steel)
Applications
Our nuts are used in conjunction with bolts, washers, and threaded rods across industries that demand high strength, vibration resistance, or chemical tolerance:
- Structural Steel & Civil Construction – Heavy hex and flange nuts used in bridges, metro lines, scaffolding, and concrete anchoring.
- Automotive & Transportation – Hex and lock nuts used in axles, engine systems, braking, and suspension.
- Renewable Energy – Used in wind turbine towers, solar module mounting structures, and hydro plants.
- Oil, Gas & Petrochemicals – B8/B8M stainless nuts withstand corrosive fluids, heat, and high pressure.
- OEM & Machinery – Machine-grade nuts used in robotics, CNC assemblies, and automation fixtures.
- Electrical & HVAC Systems – Used for panel fixing, switchgear installation, cable management, and more.
Technical Overview
Why Choose SM Fastners?
🏭 In-house thread rolling and CNC-controlled nut production
🔩 100% dimensional and visual inspection with digital QC reports
🌐 Export documentation and international logistics support
🧪 Certified raw materials and surface treatments
💡 Ability to manufacture custom-size or special-profile nuts on demand
🔁 Repeat-order ready with batch traceability and ERP integration
Packaging & Export
Our nuts are carefully packed in:
- Small HDPE pouches (retail or sampling)
- Corrugated export cartons with part number labeling
- ISPM-15 treated wooden crates and pallets for sea shipments
Labeling includes: Size, material, grade, lot/batch number, quantity, PO reference, and customer branding (on request).
Industries We Serve
🔧 Engineering & OEM Manufacturing
🏗️ Construction & Infrastructure
🚚 Automotive & Commercial Vehicles
⚡ Power Generation & Transmission
🛢️ Oil & Gas Exploration
🌬️ Renewable Energy (Wind / Solar / Hydro)
🧰 Maintenance, Repair & Overhaul (MRO)
Documentation Supplied
- Material Test Certificates (EN 10204 3.1 or 3.2)
- Coating & Surface Finish Reports
- Dimensional Reports / Tolerance Charts
- Commercial Invoice & Packing List
- Country of Origin & HS Code Declaration
- Fumigation & Compliance Certificates
Request a Quotation
For bulk orders, custom nut solutions, or fast delivery across borders:
📧 Email: susheel@smfastners.com
📞 Phone: +91 8968469570
💬 WhatsApp Chat: Click to Chat
We guarantee fast responses within 24 hours with complete technical data and export-ready pricing.