Stainless steel single‑action spring flag hinge with window‑frame jamb leaf and straight door leaf, internal spring, self‑closing
Technical drawing of single‑action spring flag hinge showing overall height H, width W, thickness T and template hole positions
Specification sheet for stainless steel single‑action spring flag hinge, approximately 4.0″ × 3.5″ × 3.0 mm

Architectural Stainless Steel Single‑Action Spring Flag Hinge | Window‑Frame Jamb Leaf + Straight Door Leaf | Spring‑Return | SS304/201 | Satin/Polished/AB/AC/PVD

  • Type: single‑action spring flag hinge (one‑way spring return)
  • Nominal size (H × W × T): ~4.0″ × 3.5″ × 3.0 mm
  • Material: stainless steel (SS304/201)
  • Design: window‑frame jamb leaf + straight three‑hole door leaf; internal spring; precision knuckle/pin; template screw pattern
  • Finishes: Satin Stainless (SSS), Polished Stainless (PSS), Antique Brass (AB), Antique Copper (AC), PVD
  • Applications: room doors, wooden gate doors; residential/light commercial
  • Highlights: automatic one‑way closing, broad frame support, quiet operation, repeatable installation, long service life
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Description

Designed for doors that need a clean self‑closing action, this stainless‑steel single‑action spring flag hinge pairs a window‑frame jamb leaf with a straight, three‑hole door leaf. The internal spring delivers controlled one‑way return without a separate closer, while the template screw layout speeds installation and maintains alignment. Built from SS304/201 with coordinated finishes, it’s sized around 4″ × 3.5″ × 3.0 mm for dependable use on residential and light‑commercial wooden doors.

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Akada Hardware specializes in a wide range of high-quality hardware solutions for both wooden and metal doors. Our product line includes stainless steel as well as composite metal products, all designed to provide strength, durability, and modern aesthetics.

Akada’s products include Door Locks, Door Hinges, Lever Handles, Door Closers, Panic Exit Devices, Door Stoppers, Flush Bolts, and more. These products are tested to the most rigorous international standards, including CE, UL, BS EN, ANSI, and BHMA. Whether for residential, commercial, healthcare, hospitality, or educational applications, Akada hardware is engineered for top performance and reliability.

More door hardware items include:
1、Stainless Steel & Composite Metal Door Hinges – UL Listed, Fire Rated & CE Certified
2、Door Locks – CE EN12209, Fire Rated
3、Stainless Steel & Composite Metal Door Handles – BS EN 1906 Certified
4、Panic Exit Device – UL Listed & CE Certified
5、Door Closers – CE BS EN 1154 Certified
6、Glass Hardware / Bathroom Hardware – Combining elegance with functionality for residential and commercial use.

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