Product Overview
High-Precision Stainless Steel Fasteners & Industrial Hardware Solutions
Qiaodi Steel supplies an extensive inventory of stainless steel fasteners and heavy-duty industrial hardware engineered for structural assembly, machinery manufacturing, marine environments, and architectural engineering. Operating out of Wuxi—China’s primary logistics and industrial distribution hub—we provide global distributors, OEMs, and project contractors with reliable, highly durable fastening solutions.
Our fasteners are produced in strict compliance with major international standards, including DIN, ISO, ANSI/ASME, and JIS. Available in high-grade A2-70 (304), A4-80 (316), and 316L stainless steel, our hardware components deliver superior tensile strength, exact pitch tolerances, and long-lasting resistance against rust and chemical corrosion.
Core Product Categories
- 01 / Bolts & Screws
- Types: Hex Bolts, Socket Head Cap Screws, Carriage Bolts, Flange Bolts, Stud Bolts, and Self-Tapping Screws.
- Standards: DIN 933, DIN 931, DIN 912, ANSI B18.2.1, ISO 4014.
- 02 / Nuts & Threaded Rods
- Types: Hex Nuts, Lock Nuts (Nylon Insert), Flange Nuts, Cap Nuts, Wing Nuts, Heavy Hex Nuts, and Full-Thread Rods.
- Standards: DIN 934, DIN 985, DIN 6923, ANSI B18.2.2, DIN 975 (Threaded Rods).
- 03 / Washers & Rings
- Types: Flat Washers, Spring Lock Washers, Fender Washers, Tooth Lock Washers, and Retaining Rings.
- Standards: DIN 125, DIN 127, DIN 9021, ANSI B18.22.1.
- 04 / Rigging & Industrial Hardware
- Types: Shackles, Wire Rope Clips, Turnbuckles, Eye Bolts, Eye Nuts, Chains, Quick Links, and Custom Brackets.
- Applications: Marine rigging, lifting equipment, structural tensioning, and industrial frameworks.
Technical Specifications & Material Range
Technical Specifications & Property Classes
| Parameter | Stainless Steel Fasteners | Industrial Rigging & Hardware |
| Size / Diameter Range | M2 to M64 (Metric) / #4 to 2-1/2” (Imperial) | M5 to M36 / Custom Sizes |
| Length Options | 5 mm to 1000 mm / Full-Thread Studs up to 3m | Standard & Custom Dimensions |
| Material Grades | Stainless Steel 304 (A2-70), 316 (A4-70 / A4-80), 316L, 310S, Duplex 2205 | AISI 304, AISI 316, Drop Forged Stainless Steel |
| Manufacturing Standards | DIN, ISO, ANSI/ASME B18.2.1/B18.2.2, JIS, GB | DIN 580/582 (Eye Bolts/Nuts), US Type Rigging Hardware |
| Thread Precision | 6g / 6H (Metric), Class 2A / 2B (UNC/UNF Imperial) | Standard Machined / Rolled Threads |
| Surface Treatment | Passivated, Bright Polished, Electro-Polished, Anti-Galling Coated | Electro-Polished, Drop Forged Bright Finish |
Quality Control & Thread Inspection
- 100% Thread Accuracy: Inspected using calibrated Go/No-Go thread plug and ring gauges to guarantee smooth assembly on-site.
- Mechanical & Chemical Testing:
- Tensile strength, yield strength, and elongation testing according to ISO 3506 standards.
- Positive Material Identification (PMI) chemical analysis to confirm exact 304/316 grade compliance.
- Salt spray corrosion resistance testing.
- Full Certification: Supplied with EN 10204 3.1 Certificates guaranteeing material heat numbers, mechanical properties, and dimensional compliance.
Packaging & Export Protection
- Bulk & Small Box Packaging: Packed in inner small boxes or plastic polybags with clear barcode labeling, then packed into sturdy master cartons (25kg max per carton).
- Palletized Shipment: Cartons are stacked neatly on sturdy wooden or plastic pallets, shrink-wrapped with protective film, and strapped securely for safe container loading.
- Custom Kitting Services: Pre-assorted bolt, nut, and washer assembly kits available upon request for OEM manufacturing lines.