| Attribute |
Details |
| Type |
Flange Nuts (Integral Washer Nuts, Locking Flange Nuts) |
| Material |
- Carbon Steel (ASTM A563 Grade C, ISO 898-2 Grade 4/8)
- Stainless Steel (304/316, A2-70/A4-80)
- Alloy Steel (ASTM A194 Grade 2H) for High-Pressure Use |
| Finish |
- Zinc Plated (Yellow/White/Blue, RoHS/REACH Compliant)
- Hot-Dip Galvanized (ASTM A153, ISO 1461)
- Dacromet Coating (1000+ Hours Salt Spray Resistance)
- Black Oxide |
| Design |
- Hexagonal Body with Integral Flange Washer
- Flange Surface: Smooth, Serrated, or Knurled (for Anti-Slip Grip)
- Optional Locking Features: Nylon Insert (Prevailing Torque), Serrated Flange |
| Thread Type |
- Metric (M5-M64, ISO 965-1)
- Imperial (1/4"-4", UNC/UNF)
- Metric Fine (e.g., M12x1.5)
- API Threads (for Oil & Gas Pipelines) |
| Thread Pitch |
- Coarse (Standard): ISO 262, ASME B1.1
- Fine: ISO 261, ASME B1.1M |
| Standards Compliance |
- ISO 4161 (Flange Nuts)
- ASME B18.2.2 (Inch Series Nuts)
- EN 14399-6 (Structural Bolting Components)
- DIN 6923 (Metric Flange Nuts with Serrated Flange) |
| Strength Grade |
- Carbon Steel: Grade 4, 6, 8
- Stainless Steel: A2-70 (304), A4-80 (316)
- Alloy Steel: Grade 10 (ASTM A194) |
| Corrosion Resistance |
- Salt Spray Test: 500–1500 Hours (Depending on Finish)
- Marine-Grade Options (Stainless Steel 316, Triple-Zinc Coated) |
| Packaging |
- Bulk: Poly Bags in Cartons (25kg–50kg per Carton)
- Palletized (Securely Wrapped for International Shipping)
- Retail: Blister Packs or Custom Branded Boxes |
| Certifications |
- CE, RoHS, REACH
- ISO 9001:2015, ISO 14001
- Material Test Certificates (MTC) with Hardness Test Results
- Optional: API 20E (Oil & Gas), FDA (Food Industry) |
| Applications |
- Industrial Machinery, Pipeline Flanges, Structural Steel, Automotive Engines
- Solar Panel Mounting, Wind Turbines, Marine Equipment
- High-Vibration Environments (Serrated/Locking Types) |
| Minimum Order Quantity (MOQ) |
500 Pieces (Standard Sizes); 1000 Pieces (Custom Locking Types/Finishes) |
| Delivery Time |
10–25 Days (Standard); 25–40 Days (Customized Orders) |
| Customization |
- Non-Standard Flange Diameters/Thicknesses
- Special Thread Lubrication (e.g., Anti-Seize, PTFE)
- Custom Laser Marking (Logos, Part Numbers) |
- Integrated Washer Design: Eliminates the need for separate washers, reducing assembly time and improving load distribution.
- Anti-Slip & Locking Features: Serrated flanges or nylon inserts prevent loosening in high-vibration applications, ensuring safety and reliability.
- Global Compliance: Meets EU (EN), US (ASME), and international (ISO) standards, facilitating easy import and use in cross-border projects.
- Material & Finish Options: Diverse materials (stainless steel, alloy steel) and corrosion-resistant finishes (Dacromet, hot-dip galvanized) suit harsh environments.
- Wholesale Efficiency: Competitive pricing for bulk orders, flexible shipping terms (FOB/CIF/EXW), and quick delivery for standard sizes.
Let me know if you need to highlight compatibility with specific bolt grades (e.g., 8.8/10.9) or add industry-specific certifications (e.g., ATEX for explosive environments)!
JH Bolt Co., Ltd is a professional manufacturer of different types of bolts with more than 15 years rich manufacturer experience. The factory area is more than 1500 squares with more than hundreds different types ofnevproduction machines. There are more than 50 people who work here for at least 5 years.With quality &customer frst, staffs second, then company, Our products are widely recog-nized and trusted by users all over the world. Proft for the development of communication, We are here for you 12 hours a day, 7 days a week!
