Commercial Self-closing Hinge

Commercial self-closing hinges need to handle the daily rigors of frequent use.  Waterson hinges are designed to manage commercial closing demands while maintaining fluid and efficient motion, particularly with obligatory fire doors.  A typical 7’0 door utilizes three active Waterson Closer Hinges to create a perfect, self-closing system. Each hinge’s unique digital panel allows the spring tensions to adjust precisely according to door weight and environmental conditions.  Additionally, Waterson hinges meet all ADA codes concerning speed control, force, and clearance.

Commercial Self-closing Hinges, Commercial Self-closing Hinge
  • 3hr Fire Rated
  • Commercial Grade
  • Quiet Self Closing
  • Aesthetically pleasing
  • Fully Speed & Force Adjustable
  • ADA Compliant
  • ANSI A156.17 Grade One – UL Listed
Commercial Self-closing Hinges, Commercial Self-closing Hinge
Commercial Self-closing Hinges, Commercial Self-closing Hinge
Commercial Self-closing Hinges, Commercial Self-closing Hinge
Commercial Self-closing Hinges, Commercial Self-closing Hinge

Comparison With Door Closer

Waterson Self-closing hingeTraditional door closer
Position
On door and easy as regular hinges
On door and need to preserve installation space
Aesthetics
Elegant and minimized visual intrusion
Bulky and maximized visual intrusion
Opening
Effortless
Strenuous
Outdoor
Yes, High Weather resistance
Yes and easily broken
Fire resistanceYesYes
Durability
1 million cycle test passed
Mostly 20 thousand cycles depending on brands
CostHardware+ Installation+ Maintenance

Low total cost

Hardware+ Installation+ Maintenance

High total cost

Commercial Self-closing Hinges, Commercial Self-closing Hinge

Specify Waterson

Specification and Configuration

US STANDARD 

1. Specification

Hinge TypeDIM (H x W)Door thicknessModel#GageOptions
Full Mortise4″ x 4″1-3/8″K51M400

0.130″ /3.30MM

FINISHES

US32D-630-Satin Brushed
US10B-640-Oil Rubbed Bronze
USL1-631-Matte Black
PVD Gold
Custom

CORNERS

Square
1/4R radius
5/8R radius

4-1/2″ x 4-1/2″1-3/4″K51M-450

0.134″ / 3.40MM

5″ x 5″1-3/4″~2-1/2″K51M-500

0.146″ / 3.71MM

5″ x 5″1-3/4″~2-1/2″K51M-500D

0.190″ / 4.83MM

6″ x 6″1-3/4″~2-1/2″K51M-660

0.160″ / 4.06MM

Swing Clear4-1/2″ x 4-1/2″1-3/4″K51L-SWRH-450

0.134″ /3.40MM

5″ x 4-1/2″1-3/4″K51L-SWRH-500

0.150″ /3.71MM

2. Configuration

Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Hinge QtyFinish
1-3/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-450-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-Satin Brushed
USL1-631-Matte Black

Special Order

US10B-640-Oil Rubbed Bronze
PVD Gold

Commercial Self-closing Hinges, Commercial Self-closing Hinge

K51M-450-B3

H

3 hinges/door (DS.HA.SA1)
K51M-450-C3M3 hinges/door (SB.SA.SA1)
K51M-450-D3H3 hinges/door (DS.HA.SB)
1-3/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-450-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-450-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-450-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-450-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/8″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-400-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-Satin Brushed
USL1-631-Matte Black

Special Order

US10B-640-Oil Rubbed Bronze
PVD Gold

K51M-400-B3

H

3 hinges/door (DS.HA.SA1)
K51M-400-C3M3 hinges/door (SB.SA.SA1)
K51M-400-D3H3 hinges/door (DS.HA.SB)
1-3/8″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-400-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-400-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/8″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-400-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-400-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/4″ ~ 2-1/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-500D-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-Satin Brushed
USL1-631-Matte Black

Special Order

PVD Gold

Commercial Self-closing Hinges, Commercial Self-closing Hinge

K51M-500D-B3

H

3 hinges/door (DS.HA.SA1)
K51M-500D-C3M3 hinges/door (SB.SA.SA1)
K51M-500D-D3H3 hinges/door (DS.HA.SB)
1-3/4″ ~ 2-1/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-500D-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-500D-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″ ~ 2-1/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-500D-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-500D-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51L-SWRH-450-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-Satin Brushed

K51L-SWRH-450-B3

H

3 hinges/door (DS.HA.SA1)
K51L-SWRH-450-C3M3 hinges/door (SB.SA.SA1)
K51L-SWRH-450-D3H3 hinges/door (DS.HA.SB)
1-3/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51L-SWRH-450-C4M4 hinges/door (SB.SA.SA.SA1)
K51L-SWRH-450-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51L-SWRH-450-A4M4 hinges/door (SA.SA.SA1.SA1)
K51L-SWRH-450-B4H4 hinges/door (DS.HA.SA.SA1)

US STANDARD 

1. Specification

Hinge TypeDIM (H x W)Door thicknessModel#GageOptions
Full Mortise4″ x 4″1-3/8″K51M400

0.130″ /3.30MM

FINISHES

US32D-630-Satin Brushed
US10B-640-Oil Rubbed Bronze
USL1-631-Matte Black
PVD Gold
Custom

CORNERS

Square
1/4R radius
5/8R radius

Commercial Self-closing Hinges, Commercial Self-closing Hinge

4-1/2″ x 4-1/2″1-3/4″K51M-450

0.134″ / 3.40MM

5″ x 5″1-3/4″~2-1/2″K51M-500

0.146″ / 3.71MM

5″ x 5″1-3/4″~2-1/2″K51M-500D

0.190″ / 4.83MM

6″ x 6″1-3/4″~2-1/2″K51M-660

0.160″ / 4.06MM

Swing Clear4-1/2″ x 4-1/2″1-3/4″K51L-SWRH-450

0.134″ /3.40MM

5″ x 4-1/2″1-3/4″K51L-SWRH-500

0.150″ /3.71MM

2. Configuration

Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Hinge QtyFinish
1-3/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-450-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-
Satin Brushed
USL1-631-
Matte Black

Special Order

US10B-640-
Oil Rubbed Bronze
PVD Gold

K51M-450-B3

H

3 hinges/door (DS.HA.SA1)
K51M-450-C3M3 hinges/door (SB.SA.SA1)
K51M-450-D3H3 hinges/door (DS.HA.SB)
1-3/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-450-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-450-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-450-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-450-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/8″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-400-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-
Satin Brushed
USL1-631-
Matte Black

Special Order

US10B-640-
Oil Rubbed Bronze
PVD Gold

K51M-400-B3

H

3 hinges/door (DS.HA.SA1)
K51M-400-C3M3 hinges/door (SB.SA.SA1)
K51M-400-D3H3 hinges/door (DS.HA.SB)
1-3/8″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-400-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-400-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/8″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-400-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-400-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/4″ ~ 2-1/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51M-500D-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-
Satin Brushed
USL1-631-
Matte Black

Special Order

PVD Gold

Commercial Self-closing Hinges, Commercial Self-closing Hinge

K51M-500D-B3

H

3 hinges/door (DS.HA.SA1)
K51M-500D-C3M3 hinges/door (SB.SA.SA1)
K51M-500D-D3H3 hinges/door (DS.HA.SB)
1-3/4″ ~ 2-1/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51M-500D-C4M4 hinges/door (SB.SA.SA.SA1)
K51M-500D-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″ ~ 2-1/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51M-500D-A4M4 hinges/door (SA.SA.SA1.SA1)
K51M-500D-B4H4 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openClosing Type

– Mechanical(M)
– Hydraulic Hybrid(H)

Qty of HingeFinish
1-3/4″
< 7’-0 x 4′-0
≤ 260 lbs
K51L-SWRH-450-A3M3 hinges/door (SA.SA.SA1)Stocking

US32D-630-
Satin Brushed

K51L-SWRH-450-B3

H

3 hinges/door (DS.HA.SA1)
K51L-SWRH-450-C3M3 hinges/door (SB.SA.SA1)
K51L-SWRH-450-D3H3 hinges/door (DS.HA.SB)
1-3/4″
< 8’-0 x 4′-0
≤ 260 lbs
K51L-SWRH-450-C4M4 hinges/door (SB.SA.SA.SA1)
K51L-SWRH-450-D4H4 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’-0 x 4′-0
≤ 330 lbs
K51L-SWRH-450-A4M4 hinges/door (SA.SA.SA1.SA1)
K51L-SWRH-450-B4H4 hinges/door (DS.HA.SA.SA1)

Specification

OTHER COUNTRIES

ModelDIMDoor ThicknessGaugeFinishDoor Spec
Self-closing Combination
Self-closing & Hold-open Combination
K51M-6406″ x 4″ (H*W)35-45 mm4.1 mmSatin Brushed

Polished

Golden

Black

≤ 70kg
<1800 x 1250 mm
 ( DS, HA ) = ( Top, Bottom)
( SA, SA1 ) =( Top, Bottom)
( SB, HS ) = ( Top, Bottom)
K51M-6456″ x 4.5″ (H*W)40-50 mm
K51M-6506″ x 5″ (H*W)45-55 mm≤ 120kg
<2200 x 1250 mm
( DS, HA, SA1 ) = (Top, Middle, Bottom)
( SA, SA, SA1 ) = (Top, Middle, Bottom)
 ( SB, SA, HS ) = (Top, Middle, Bottom)
( SB, SA, SA1 ) = (Top, Middle, Bottom)
K51M-6556″ x 5.5″ (H*W)50-60 mm
K51M-6606″ x 6″ (H*W)55-65 mm

Catalog

US AREA
Non-US Area

Specification

US Area
Non-US Area

Templates

K51M

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