Deltana S35R4-BT Steel Hinge with Ball Tips, 3-1/2" x 3-1/2" x 1/4" Radius Corners (Pair)

Residential. The S35R4-BT is built as a plain bearing residential hinge in the R4 option, with a .085 inch leaf thickness, which suits interior house and apartment doors rather than high traffic commercial openings. For a commercial opening at the same 3-1/2 inch size with 1/4 inch radius corners, the Orca Hardware 3514 Series plain bearing commercial hinge is the direct step up.

The Deltana S35R4-BT is a residential steel hinge described for indoor applications, so for an exterior leaf look at a hinge built for that use. The Delaney 4 inch by 4 inch bulk residential exterior hinge pair with 5/8 inch radius is the exterior-intended option in the same residential class, though it is a 4 inch hinge with a 5/8 inch radius rather than 3-1/2 inch with 1/4 inch radius. If the exterior door also needs pin security, the Hager BB1168 is a full mortise heavy duty ball bearing hinge with a non-removable pin, which the S35R4-BT does not have.

For a square corner mortise, the Emtek 91013 is a 3-1/2 inch by 3-1/2 inch residential plain bearing hinge pair with square corners in plated steel - same size and same plain bearing action as the Deltana S35R4-BT, but cut square instead of the 1/4 inch radius. The Schlage Residential S3P1010 is also a 3.5 inch by 3.5 inch square corner plain bearing mortise hinge, sold three to a pack rather than as a pair. Corner style is not interchangeable in an existing mortise: a square corner hinge will not seat in a radius pocket without rework.

Not in an existing mortise. The Delaney 3-1/2 inch by 3-1/2 inch bulk steel residential interior hinge pair is cut with a 5/8 inch radius, while the Deltana S35R4-BT is cut with 1/4 inch radius corners. The size, steel material, interior residential application and pair packaging line up, but the corner radius does not, so the Delaney will not seat in a pocket routed for 1/4 inch radius. For new work where you are routing the mortise to match, either corner profile is workable - just pick one and keep the whole opening consistent.

The Deltana S35R4-BT is a plain bearing residential hinge, so a spec written for a commercial bearing hinge is better served by the Ives 3CB1, a steel 3-knuckle concealed bearing full mortise hinge with a medium duty rating, or the Ives 3CB1HW, the heavy weight concealed bearing version of the same 3-knuckle full mortise design. All three are full mortise, so the mounting method is the same, but the bearing type and duty classification are where the S35R4-BT and the commercial hinges part company.

No - the Deltana S35R4-BT is a plain mechanical steel hinge with no wire path. To carry power through the hinge, use a purpose-built transfer hinge: the Command Access ETH-CB70 is an energy transfer hinge on a 3 knuckle standard weight steel base, the ETH-BB68 is the 5 knuckle heavy duty version, and the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect. If you also need door position monitoring, the Command Access ETM-CB70 adds door position sensing on a 3 knuckle steel base.

The S35R4-BT is sold as a pair, so one order covers two hinges. A standard interior door typically takes three hinges, so plan on two pairs per door and a spare leaf, or order accordingly. If you want a count of three in one pack instead, the Ives 1010RP residential plain bearing hinge ships as a set of three.

The hinge is specified with #9 x 3/4 inch wood screws, so it is drilled for that screw into a wood door and wood jamb. Short 3/4 inch screws are fine into solid wood frames; if you are hanging a heavier slab or screwing into a shimmed jamb, many installers swap in longer screws of the same gauge to reach the stud.

Seven finishes: oil rubbed bronze, brushed nickel, antique nickel, polished chrome, brushed chrome, polished brass, and antique brass. The ball tips come installed in the matching finish, so the decorative tips won't be a different tone from the leaves. That makes it straightforward to match knobs or levers already on the other doors in a unit.

No, the S35R4-BT is supplied without an NRP, so the pin can be driven out from the hinge side. That is normal for an interior residential hinge where the barrel is not exposed outside. If the door swings out and you need the pin secured, a non-removable pin hinge such as the Hager BB1168-NRP full mortise ball bearing hinge is the right call.

For a 4 inch leaf with the same 1/4 inch radius corner cut and plain bearing action, the Orca Hardware 4014 Series is a 4 inch by 4 inch plain bearing hinge with 1/4 inch radius corners. If you want square corners at 4 inch, the Orca 4040 Series is a 4 inch by 4 inch square corner plain bearing hinge. The Deltana S35R4-BT itself is built at 3-1/2 inch by 3-1/2 inch, so it does not cover a 4 inch mortise. The Orca hinges are commercial medium duty rather than residential, and they do not carry the installed ball tips the S35R4-BT comes with.

Step up to a bearing hinge in the same 3-1/2 inch size. The Emtek 94013 is a heavy duty ball bearing hinge pair, 3-1/2 inch by 3-1/2 inch, plated steel with square corners, and the Emtek 92013 is a heavy duty plain bearing pair at the same 3-1/2 inch by 3-1/2 inch size. The Deltana S35R4-BT is a plain bearing residential hinge, so for an apartment entry door or any leaf that gets constant cycling the bearing hinge is the one to spec. Note that both Emtek options are square corner, so confirm the mortise profile before ordering.

Both are steel plain bearing residential hinges, but they differ in three ways that matter at the door. The Ives 1010RP has square corners and ships as a set of three, which covers one standard door leaf outright; the Deltana S35R4-BT has 1/4 inch radius corners and is sold as a pair, so a three-hinge door takes two pairs. The S35R4-BT also comes with matching decorative ball tips installed across its finish range, including oil rubbed bronze, polished brass and polished chrome, where the Ives 1010RP is a plain functional hinge.

No handing to specify. The S35R4-BT is a full mortise butt hinge with ball tips and works on either a left or right hand door; you simply mount it with the barrel on the swing side. Only the finish needs choosing.

Two directions. The Bommer LB8000 Series is a steel lubricated bearing three knuckle architectural grade hinge furnished with button tips instead of ball tips, which gives a flatter finial profile. The McKinney SQ3331 takes a different tack entirely - a square barrel two knuckle decorative hinge at 4-1/2 inch by 4-1/2 inch, so it reads as a squared modern barrel rather than a round barrel with a tip. The Deltana S35R4-BT is the round barrel with ball tips at 3-1/2 inch by 3-1/2 inch, so the McKinney also means a larger mortise.