Residential single‑action spring hinge with adjustable tension and UL listed mark for 3‑hour fire‑rated doors
Radius‑corner spring hinge for residential doors with UL listed and ANSI marks, showing adjustable tension slot
Technical drawing and size chart for 4×4, 4×4.25, 4×3.5, and 4×3 inch residential spring hinges, 2.7 mm thick
Feature summary for Grade 1 residential spring hinge showing adjustable tension, anti‑friction bearings, UL10C 3‑hour rating, and finish options

Single‑Action Spring Hinge for Residential | Adjustable Tension | UL10C 3‑Hour Fire Rated | ANSI/BHMA A156.17 Grade 1 | 2.7 mm

  • Approx. 2.7 mm leaf thickness; single‑action spring design
  • Adjustable spring tension via hex wrench or tension rod
  • 2 anti‑friction ball bearings for smooth return and longer service life
  • Meets ANSI/BHMA A156.17 Grade 1; up to 1,000,000 cycles
  • UL10C fire‑rated up to 3 hours
  • Corner options: square, 1/4″ radius, 5/8″ radius
  • Sizes: 4″×4″, 4″×4.25″, 4″×3.5″, 4″×3″
  • Materials/finishes: stainless steel or steel; US15, US26, US4, US10B, US19, US14
  • Supplied with machine/wood screws
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Description

Designed for residential and light‑duty openings that must reliably self‑close, this single‑action spring hinge combines Grade‑1 durability with precise, field‑adjustable spring tension. Two anti‑friction ball bearings stabilize the knuckle for smooth, controlled closing and reduced wear. UL10C certification up to 3 hours supports fire and smoke door compliance in corridors and garages. Available in square or 1/4″/5/8″ radius corners across popular 4‑inch formats, the hinge ships with machine and wood screws for quick, code‑compliant installation. Choose stainless steel or steel construction and match your décor with architectural finishes like satin nickel, polished chrome, oil‑rubbed bronze, flat black, polished nickel, and satin brass.

Hinge Type Single action spring hinges for residential
Hinge Size (Length X Width) (inch) 4″x4″, 4″x4.25″, 4″x3.5″, 4″x3″
Hinge Thickness 2.7mm
Material Stainless Steel / steel optional
Bearings 2 Anti Friction Ball Bearing
ANSI/BHMA Standard Meets ANSI/BHMA A156.17 Grade 1 Self-closing hinges, up to 1,000,000 times cycle test
Usage For use with doors where self-closing is required
Fire Resistance UL10C, Approved up to 3 hours
Corners Available in square and in 1/4″, 5/8″ radius corners.
Spring Tension Spring tension can be adjusted with hex wrech or tension rod
Finishes
SATIN NICKEL US15
POLISHED CHROME US26
SATIN BRASS US4		 OIL RUBBED BRONZE US10B
FLAT BLACK US19
POLISHED NICKEL US14
Screws Supplied with machine/wood screws

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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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