Stainless Steel 304 Flag Hinge for Home Door - DDSS030
Product Overview
D&D HARDWARE's Stainless Steel 304 Flag Hinge (Model: DDSS030) combines functional engineering with aesthetic appeal to elevate residential door systems. This premium door hinge features a distinctive flag design that serves both decorative and structural purposes, making it an ideal choice for homeowners and designers seeking to enhance both functionality and visual appeal. Crafted from high-grade SUS304 stainless steel, it delivers exceptional corrosion resistance and durability, even in humid environments like bathrooms and kitchens. Designed to integrate seamlessly with D&D's door handles, door locksets, and stainless steel door stops, this flag hinge offers a complete solution for modern and traditional home interiors.
Technical Specifications
- Model Number: DDSS030
- Brand: D&D HARDWARE
- Material: Stainless Steel (SUS201 for dry indoor areas; SUS304 for general residential use; SUS316 for coastal/high-moisture environments)
- Size: 5.0"x4.0"x3.0mm (127mm x 102mm x 3mm)
- Type: Flag Hinge
- Finish Options: SSS (Satin Stainless Steel), PSS (Polished Stainless Steel), AB (Antique Brass), AC (Antique Copper), PVD (matte black, bronze)
- Design Styles: Modern, Traditional, Contemporary
- Warranty: 5 Years Mechanical Warranty (covers material integrity, finish, and structural performance)
- Load Capacity: Up to 60kg per door (with 3 hinges)
- Installation Type: Surface-mounted (non-mortise design)
- Mounting Hardware: Includes stainless steel screws (4mm x 25mm)
Product Images and Videos
Product Features & Advantages
- Distinctive Flag Design: Form Meets Function: The unique flag-shaped leaf adds architectural interest to doors, serving as both hardware and decor. This design eliminates the need for decorative door plates while providing 30% more surface contact than standard hinges, distributing weight more evenly and reducing door sag over time.
- SUS304 Stainless Steel Construction: The hinge is crafted from 18/8 stainless steel (18% chromium, 8% nickel) that forms a protective oxide layer, resisting corrosion from: - Bathroom humidity and steam - Kitchen splatters and cleaning agents - Outdoor moisture (when used on exterior doors) This ensures the hinge maintains its appearance and performance for 15+ years in typical home environments.
- Surface-Mounted Design for Easy Installation: Unlike mortise hinges that require precise chiseling, this flag hinge mounts directly to door surfaces, reducing installation time by 50%. This makes it ideal for retrofits and DIY projects, as well as for doors where mortising would damage decorative surfaces (e.g., glass-paneled or carved wooden doors).
- Versatile Finishes for Decor Coordination: Finishes are engineered to complement diverse interior styles: - SSS: Matte finish that integrates with modern cabinet handles and bathroom door stops - PSS: Polished finish that adds brightness to traditional spaces, matching brass door knobs - AB/AC: Aged finishes that enhance rustic or heritage decor - PVD: Durable colored finishes (black, bronze) for industrial or minimalist interiors
- Enhanced Structural Stability: The 3.0mm thickness and reinforced pivot point provide exceptional rigidity, supporting doors up to 60kg without bending. The precision-machined pivot ensures smooth operation, while the wide mounting base (4.0") distributes stress across the door surface, preventing wood splitting.
Installation Steps
- Gather Tools and Materials: Prepare a drill with 3mm bit, Phillips screwdriver, measuring tape, level, pencil, and the DDSS030 hinges (2 hinges for standard doors, 3 for heavier doors). Include compatible D&D door handle and door lockset for complete installation.
- Mark Hinge Positions: - Measure and mark positions: top hinge 150mm from door top, bottom hinge 200mm from door bottom. - Use a level to ensure vertical alignment between door and frame marks. - Mark screw hole positions using the hinge as a template.
- Pre-Drill Pilot Holes: Drill 3mm pilot holes at marked positions to prevent wood splitting, especially important for hardwood doors. For metal doors, use a metal drill bit and apply cutting fluid.
- Mount Hinges to Door: Align hinge with marks on door edge, insert provided stainless steel screws, and tighten to 10-12 ft-lbs torque. Do not over-tighten, as this can warp the hinge leaf.
- Attach Door to Frame: With assistance, hold door in place and align hinges with frame marks. Secure frame-mounted hinge leaves with screws, checking door movement after each screw is tightened.
- Adjust and Test: - Open and close door several times to ensure smooth operation. - Check for uniform gap (2-3mm) between door and frame. - If binding occurs, loosen frame screws slightly and adjust position before retightening.
- Complete Installation: Install D&D door handle and door lockset, ensuring proper alignment with hinges. Add a magnetic door stop to prevent wall damage from door swing.
Application Scenarios
The DDSS030 Flag Hinge is designed for diverse residential and light commercial applications where both functionality and aesthetics matter:
- Residential Interior Doors: - Living Rooms & Bedrooms: Enhances wooden or composite doors with decorative flag design; SSS finish complements modern decor. - Bathrooms: SUS304 material resists humidity and corrosion; PVD black finish adds contemporary style to spa-inspired spaces. - Kitchens: Durable construction withstands frequent use; AB finish coordinates with traditional cabinet hardware.
- Exterior & Specialized Doors: - Patio & Garden Doors: SUS316 option resists outdoor elements; flag design adds curb appeal to entryways. - French Doors: Surface-mounted design preserves glass panels; PSS finish enhances elegance in dining areas. - Closet & Utility Doors: Easy installation simplifies DIY projects; 5.0" size provides stability for wardrobe doors.
- Light Commercial Spaces: - Hotel Guest Rooms: Decorative design enhances guest experience; durable construction withstands frequent use. - Restaurant Private Dining Rooms: AB/AC finishes complement themed interiors; pairs with door closers for controlled closure. - Office Reception Areas: Modern PVD finishes align with corporate aesthetics; integrates with panic hardware for safety compliance.
Value for Buyers: - Homeowners: Combines decorative appeal with long-lasting performance, eliminating the need for future hinge replacements. Enhances home value with premium hardware that complements interior design. - Contractors & Installers: Surface-mounted design reduces installation time by 50% compared to mortise hinges; compatible with all standard door materials (wood, composite, metal). - Interior Designers: Versatile finishes and distinctive flag design serve as both hardware and decor element, simplifying specification process. - Property Managers: 5-year warranty minimizes maintenance costs; corrosion resistance ensures consistent appearance across rental units.
Certifications and Compliance
- International Standards: Complies with CE EN 1935 (architectural hardware safety) and ANSI/BHMA A156.4 Grade 2 standards for residential hinges.
- Material Certifications: SUS304 meets ASTM A240 specifications; material traceability documentation available for each production batch.
- Quality Management: Manufactured under ISO 9001-certified processes with rigorous testing: - 240-hour salt spray test (no red rust formation) - 250,000+ opening/closing cycles (no performance degradation) - 60kg static load test (72 hours with <0.5mm deflection)
- SGS Verified: Produced in SGS-audited facility with confirmed manufacturing capabilities and ethical production practices.
Customization Options
D&D offers tailored solutions for specific project requirements:
- Size Variations: Custom dimensions available (e.g., 4.0"x3.0"x2.5mm for lightweight doors, 6.0"x5.0"x3.5mm for heavy doors). Engineering drawings provided with each custom order. MOQ: 500 units.
- Material Upgrades: SUS316 for coastal properties; duplex stainless steel for extreme durability requirements. MOQ: 500 units.
- Custom Finishes: Match specific RAL/Pantone colors; custom PVD coatings (e.g., gold, copper) for high-end projects; anti-fingerprint treatments. MOQ: 300 units.
- Design Modifications: Extended flag leaf for enhanced decoration; pre-drilled holes for integration with door bolts; countersunk screw options for flush appearance. MOQ: 1000 units.
- OEM/ODM Services: Private labeling, custom packaging, and branded installation guides. Engineering support for project-specific requirements.
Production Process & Quality Control
D&D maintains strict quality standards throughout production:
- Material Sourcing: Select SUS304/SUS316 coils from certified mills with verified chemical composition (18% Cr, 8% Ni minimum for SUS304).
- Precision Stamping: Automated stamping presses form hinge leaves with ±0.02mm tolerance, ensuring consistent flag design dimensions and proper fit.
- Surface Treatment: - Deburring and polishing to remove sharp edges - Passivation treatment to enhance corrosion resistance - Finish application (SSS/PSS via abrasive polishing; AB/AC via chemical patination; PVD via vacuum deposition)
- Assembly & Pivot Formation: Precision machining of pivot points ensures smooth rotation. Hinges are assembled and tested for proper movement before final inspection.
- Quality Testing: - 100% visual inspection for finish defects and dimensional accuracy - Random sample testing for load capacity and corrosion resistance - Functional testing of opening/closing mechanism
- Packaging: Hinges are packed in moisture-resistant bags with stainless steel mounting screws. Each box includes installation instructions. Bulk orders include palletized packaging with protective inserts.
