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Pair of 4 inch brass double action spring hinges square corner

Tuff Stuff

Tuff Stuff 86854 4" Brass Double Action Spring Hinge Square Corner Pair

SKU CH-AP1V-K94ZB

A pair of 4-inch brass double-action spring hinges with square corners for in- or out-swinging doors

  • Surface finishBrass
  • Sold asPair
  • Adjustable spring tension lets you set door closing force
  • Double-action design allows the door to swing both ways
  • Brass finish resists corrosion for long-lasting appearance
  • Square-corner template matches standard mortise cut-outs
  • Supplied as a pair with mounting screws included

Double-action spring hinge

This pair of 4-inch brass hinges is designed for doors that swing both in and out. The adjustable tension spring lets installers set the closing force to suit the opening. Square corners match standard mortises without additional chiselling. Supplied screws complete the installation in one step.

Sustained load behaviour

The heavy-duty spring maintains consistent return pressure over repeated cycles without sagging. Adjustable tension compensates for door weight and air-pressure differences that can vary through the day. Brass construction resists corrosion that would weaken steel springs in humid or coastal environments. The hinge continues to close the door reliably after thousands of operations.

Practical interface limits

The square-corner leaf pattern fits only mortises cut to that exact profile; rounded-corner cut-outs will leave gaps. Door thickness must be 1-1/8 inches for the supplied template to align correctly. Brass finish will patina over time, so matching existing hardware may require periodic polishing. No fire-rating or security certification is included with this hardware.

How it compares

Measured against everything we stock in Door Stops, Hinges & Window Hardware, at today’s prices. Recalculated every night.

Price $20.99
Pricier than about 60% of the 316 comparable items (median $14.99).

Specifications

Size & build
Surface finishBrass

Questions about this item

How much force does the adjustable tension spring on the 86854 hinge exert when a door swings all day?

The hinge uses an adjustable tension spring so you can set the closing force to suit the door weight and traffic level.

What door thickness and mounting hardware are required for the 86854 pair to work?

They are made for doors 1-1/8" thick and come furnished with screws for installation.

Will the square-corner template hole pattern on the 86854 match the mortises on my existing brass hinges?

The pair uses a square-corner template hole pattern; check your current mortise dimensions against that pattern before fitting.

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