NHP78 DELUXE HINGE PIN DOOR STOP
NHP78 Deluxe Hinge Pin Door Stop
The Cal-Royal NHP78 Deluxe Hinge Pin Door Stop is a residential hinge-pin stop with a removable nylon bushing. It limits door-opening travel at a compatible hinge instead of using a separate floor-mounted stop. The manufacturer lists a 1/4-inch hinge pin and hinge sizes of 3-1/2 × 3-1/2 inches or 4 × 4 inches.
Practical Uses
- Residential interior doors: Consider NHP78 where the hinge and stopping surfaces suit the installation.
- Keeping the floor clear: Use a compatible hinge-pin location rather than adding a floor-mounted stop.
- Replacement work: Check the actual pin diameter, hinge profile, and contact arrangement before replacing an existing hinge-pin stop.
Everyday example: On a suitable bedroom door, an installer sets the NHP78 to contact sound surfaces before the lever reaches the wall. Slow test openings confirm that the door swings freely and the stop does not mark or flex the door or trim.
Installation Guidance
Verify the hinge: Measure the actual pin and check the hinge geometry. A nominal hinge size does not guarantee compatibility with every hinge of that size.
Check pin removability: Do not force out a secured, non-removable, or incompatible hinge pin. Follow the hinge manufacturer's instructions and support the door appropriately during installation.
Fit the bushing: Use the removable nylon bushing according to the supplied instructions. Do not assume that removing it establishes fit with an unlisted pin diameter.
Check contact and clearance: Arrange the stop so the handle and door remain clear of nearby obstructions. Avoid contact with glazing, fragile molding, and unsupported thin material.
Test and maintain: Confirm that the pin is properly seated, the door swings freely, and the stop does not distort the hinge, door, or trim. Inspect contact surfaces and adjustment periodically.
Problems It Helps Address
- A handle approaching the wall: Provides travel limitation when correctly fitted.
- A separate floor stop is undesirable: Uses a compatible hinge-pin location.
- Replacement fit uncertainty: Published pin and hinge references support checking the opening.
Product Details
- Part number: NHP78
- Type: Deluxe hinge-pin door stop
- Recommended use: Residential door hinges
- Bushing: Removable nylon
- Listed pin diameter: 1/4 inch
- Listed hinge sizes: 3-1/2 × 3-1/2 inches; 4 × 4 inches
Available Finishes
- US10B-Antique Bronze Oiled
- US15-Satin Nickel
- US15A-Satin nickel Blackened
- US26-Bright Chrome
- US26D-Satin Chrome
- US3-Bright Brass
- US5-Antique Brass
Selection tip: Compare the actual hinge, pin, and contact clearances before ordering. This is a physical travel limiter, not a hydraulic speed control or hold-open device.
