Description
These Heavy Duty Self-Closing Spring Hinges / Door Closers offer superior speed control, adjustable power, and tension settings. They measure 4″ x 4″, have a weight capacity of 330 lbs., are full mortise, and are made of 304 Stainless Steel. They are available in Satin Stainless Steel, Flat Black, Satin Brass, and Dark Satin Bronze finishes. There are mechanical or hydraulic hybrid closing types available, as well as an option for 90° hold-open.
Product Specifications:
- Heavy Duty Self-Closing Spring Hinges / Door Closers
- Size: 4″ Inch x 4″ Inch
- Full Mortise
- Material: 304 Stainless Steel
- Door Thickness: 1-3/8″ Inch
- Door Weight:
- Models A4 & B4: Up to 330 lbs.
- Models C4 & D4: Up to 260 lbs.
- Approximate Door Size: 4′ feet x 8′ feet
- Door Range: ≤120°
- Finishes Available: Satin Stainless Steel, Flat Black, Satin Brass, Dark Satin Bronze
- Closing Types Available: Mechanical Only, Hydraulic Hybrid
*Mechanical Only are fully exterior
*Hydraulic Hybrid hinges have fluid motion and are for interior use only - 90° hold-open available
- Fixing Method: Screw-On, only spot weld AFTER speed adjustment
- Fully adjustable closing force and speed according to environment needs
- Numerical adjustment panel on hinge end to set up precise tension
- Aesthetically pleasing compared to door closers — without extrusive arms
- UL certified cycle testing ensures many years of low maintenance.
- Template
- 4 Pack – 4 hinges per door
- Click here for Heavy Duty Self-Closing Spring Hinges / Door Closers with a weight capacity up to 260 lbs. (3 pack – 3 hinges per door)
- To learn more about Waterson Hinges, see our in depth guide here
| Model | Weight Capacity | Mechanical Only -M Hydraulic Hybrid -H |
90° Hold Open | Fluid Motion | Hinge Type |
|---|---|---|---|---|---|
| K51M-400-A4 | 330 lbs. | M – Exterior | DS.SA.SA1.SA1 | ||
| K51M-400-B4 | 330 lbs. | H – Interior | ● | DS.HA.SA.SA1 | |
| K51M-400-C4 | 260 lbs. | M – Exterior | ● | SB.SA.SA.SA1 | |
| K51M-400-D4 | 260 lbs. | H – Interior | ● | ● | DS.HA.SB.SA1 |
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 wrenches
Compliance Standards:
- ANSI A156.7 Template Hinge : 4 ½ x 4 ½
- 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 90° to 12°
- ADA Vertical Clearance: Does not intrude into the doorway as do some overhead closers
