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hold open door hinges

3pcs Hydraulic Soft Closing Door Hinges | Fire Rated | 5x5 | 7ft | 260 lbs | 1 ¾” to 2 ¼” Thick | SS304 | K51M-500D-B3

$497.59 - $554.59
$554.59
$497.59 - $554.59
$554.59
Color: Satin Brass-US4

Waterson soft closing hinges for fire doors integrate mechanical closing force with hydraulic damping to meet NFPA-80 and ANSI 156.7 requirements on 5x5 assemblies.

The hinge set manages 260 lbs doors with controlled closing, extended cycle life, and no extra or orverhead hardware. 3 years warranty

Attention: Special finishes (US4) is non-refundable

  • DESCRIPTION
  • DETAILS
  • SPECIFICATIONS
  • VIDEO

  • Applications

    • Hotel Rooms 
    • Interior & Exterior
    • 3Hr Fire-rated
    • Arch Top 
    • Heavy Duty
    • Courtyard Style

    Product Description and Features

    • Apply for door open ≤ 120° 
    • Fully adjustable closing force and speed according to environment needs
    • Numerical adjustment panel on hinge end to set up precise tension
    • Mechanical only mechanism supporting heavy duty and fully exterior  
    • Aesthetically pleasing compared to door closers -- without extrusive arms 
    • UL certified cycle testing ensures many years of low maintenance.

  • Installation Kits  

    • Both machined #12-24 UNC ½”L and wooden tapping #12 x 1 ¼” screws included -- eight (8) of each type per hinge. Pack contains five (5) spares as well.
    • Three steel adhesive shims for gap adjustment between door and frame as needed
    • Tension Crook: Keeps hinge open during installation  
    • 5mm & 3mm hex allen wrenches  

    Compliance Standards

    • ANSI A156.17 Grade 1: one million cycle testing
    • ANSI A156.7 Template Hinge : 5” x 5”
    • CSI Spec 08 7100 Door Hardware & 08 7808 Self-closing Hinges  
    • ADA Force : opening force no more than 5 lbs
    • ADA Closing Speed: at least 5 sec to move from m 90° to 12°
    • ADA Vertical Clearance: Does not intrude into the doorway as do some overhead closers

  • Specifications

    Product SKU K51M-500D-B3
    Hinge Type Full Mortise,  5 Inch x 5 Inch
    Hinge Material Stainless Steel
    Door Weight From 40lbs to 260lbs 
    Approx Door Size 1150mm W x 2200mm H (4ft x 7ft)
    Door Thickness 1 ¾” ~ 2 ¼” (45-57 mm)
    Self-closing o
    Fluid Motion o
    Hold-open x
    Fixing Method Screw-On, only spot weld AFTER speed adjustment
    Color/Finish Satin Brushed,Black,Gold,ORB
    Combination/Quantity DS.HA.SA,3 Pack





  • Product Video