BEST FBB258 Steel Full Mortise...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$67.68
BEST BEST FBB258 Steel Full Mortise Ball Bearing Standard Weight Swing Clear Hinge With Removable Pin BEST-FBB258

BEST FBB258 Steel Full Mortise Ball Bearing Swing Clear Hinge with Removable Pin

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Model: BEST-FBB258-652-4.5
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BEST FBB258 Steel Full Mortise Ball Bearing Swing Clear Hinge with Removable Pin

Professional Swing Clear Hinge for Wheelchair Accessible Applications

The BEST FBB258 is a steel full mortise ball bearing swing clear hinge engineered to swing doors completely clear of the opening when opened 90°. This standard weight hinge features a removable pin design and dual Stanley permanently lubricated non-detachable ball bearings for smooth, silent operation. Ideal for wheelchair accessible entrances and areas with limited space, the FBB258 provides exceptional durability with its robust steel construction and full mortise installation design.

Professional Features & Benefits

  • Swing Clear Design: Engineered to swing doors completely clear of the opening when door is opened 90° for maximum accessibility and space utilization.
  • Ball Bearing Operation: Equipped with two Stanley permanently lubricated non-detachable ball bearings for effortless and silent door movement throughout the life of the hinge.
  • Removable Pin Construction: Features removable pin design with reversible flush tips and pins for convenient maintenance, adjustments, and door removal when needed.
  • Heavy-Duty Steel Construction: Made from robust steel material providing exceptional strength and reliability for demanding commercial applications.
  • Full Mortise Installation: Full mortise design ensures secure and seamless installation on bevel edge doors for professional appearance and performance.
  • Versatile Application: Ideal for both remodeling projects and new construction with optional hospital tips (HT) available for specialized healthcare applications.
  • Commercial-Grade Durability: Medium duty rating suitable for commercial applications requiring reliable long-term performance.

Technical Specifications

  • Bearing Type: Ball Bearing
  • Commercial/Residential: Commercial
  • Corner Style: Square Corners
  • Department: Door Hardware
  • Duty Level: Medium Duty
  • Hinge Pin Type: Removable
  • Hinge Type: Full Mortise
  • Knuckles: 5
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: FBB258
  • Product Subgroup: Surface and Mortise Hinges
  • Product Type: Full Mortise Hinges
  • Series: Architectural Hinges
  • Subcategory: Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Wheelchair Accessible Entrances
  • Healthcare Facility Patient Rooms
  • Educational Institution Accessibility Compliance
  • Commercial Office Building Renovations
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Retail Establishments with Space Constraints

Why Choose BEST Quality?

BEST swing clear hinges deliver professional-grade reliability with robust steel construction and permanently lubricated ball bearing mechanisms rated for medium duty commercial applications. The FBB258 model combines accessibility compliance with dependable performance, making it an excellent choice for demanding commercial environments where smooth operation and durability are essential.

Product Specs

Subcategory:
Hinges
Series:
Architectural Hinges
Hinge Type:
Full Mortise
Knuckles:
5
Bearing Type:
Ball Bearing
Corner Style:
Square Corners
Product Group:
Door Hinges and Pivots
Product Subgroup:
Surface and Mortise Hinges
Product Type:
Full Mortise Hinges
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Hinge Pin Type:
Removable
Product Model:
FBB258
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

BEST BEST-FBB258-652-4.5 – Frequently Asked Questions

1) What does a swing clear hinge actually do differently from a regular butt hinge?
A swing clear hinge like the BEST FBB258 carries the leaf geometry that pulls the door completely out of the opening when it is swung to 90 degrees, so the door face no longer eats into the clear width. A standard full mortise butt hinge leaves the door thickness sitting in the opening at 90 degrees, costing you roughly the thickness of the door plus the trim. That recovered inch or two is the whole reason to buy this hinge: it is what gets a tight patient room or restroom door to a usable clear width for a wheelchair without moving the frame.
2) Will the FBB258 swing clear hinge drop into my existing 4-1/2 x 4-1/2 hinge mortises?
The FBB258 is offered in 4-1/2 by 4-1/2 inch with square corners, so it lands in the same routed pocket as the standard commercial square corner butt hinge, which is 4-1/2 by 4-1/2 on a 1-3/4 inch door. That makes it a same-prep swap on the door and frame. What is not the same is the leaf shape: swing clear leaves are cranked, so the door will sit and swing differently than the flat hinge you pull out. If your existing mortises are radius corner rather than square, this one will not seat without reworking the corners.
3) Is a medium duty hinge enough for a hospital or school corridor door?
Medium duty is the rating on the FBB258, and it is a commercial rated hinge with ball bearings rather than plain bearings, which is what lets it take continuous cycling without the knuckle wearing loose. That covers patient room doors, classroom doors, office and multi-tenant doors of ordinary weight. Where it stops is heavy leaf and high abuse openings, wide or lead lined doors, main entrances taking constant traffic. For those, step to a heavy weight hinge such as the McKinney TCA3386 or the Dormakaba CB199 concealed bearing heavy weight.
4) I need to widen the clear opening on an existing door. Is a swing clear hinge or a wide throw hinge the right fix?
They solve two different problems. Swing clear, which is what the FBB258 does, pulls the door leaf out of the opening at 90 degrees so you recover the door thickness in clear width. Wide throw pushes the door further away from the frame so it clears projecting trim, deep casing, or an adjacent wall return, and it does not by itself recover the clear width lost to the door face. If your complaint is that a wheelchair will not fit through, swing clear is the answer. If the door hits the casing or a return wall before it reaches 90 degrees, a wide throw hinge like the Hager WTBB1168 is the one to look at.
5) What is the closest equivalent to a BEST FBB258 swing clear hinge if I need one that carries a heavy weight rating?
The Hager 1260 is the other full mortise swing clear hinge in the same family of parts, and it is rated heavy duty with a 5-knuckle plain bearing design. The BEST FBB258 is a medium duty swing clear hinge running two ball bearings. Both swing the door leaf clear of the opening, so the choice comes down to bearing type and duty: ball bearing and medium duty on the FBB258, plain bearing and heavy duty on the 1260. On a high-cycle accessible opening such as a patient room or a school corridor, the bearing type is the spec worth confirming against the door weight and traffic before ordering.
6) Can I use a Don-Jo BB74545 in place of a BEST FBB258 on a wheelchair accessible door?
No. The Don-Jo BB74545 is a standard full mortise ball bearing hinge, 4-1/2 inch by 4-1/2 inch steel with square corners and 5 knuckles - it hangs the door in the conventional way, with the door leaf still occupying part of the opening when the door stands open. The BEST FBB258 is a swing clear hinge, built to carry the door completely clear of the opening at 90 degrees so the full frame width is usable. The two share size, corner style, knuckle count and ball bearing construction, but only the swing clear geometry recovers the clear width an accessible opening needs. Use the BB74545 where clear width is not the issue and the FBB258 where it is.
7) Can I take the door off without unscrewing the hinges?
Yes. The FBB258 uses a removable pin, so you knock the pin out and lift the door off the frame leaf with the hinges still screwed in place. The tips and pins are reversible flush tips, so the pin can be driven from either end. That matters on renovation work and on any opening where the door comes off regularly for moving furniture or equipment. It also means the pins are accessible from the hinge side, so on an outswing exterior opening you would want a security stud or non removable pin hinge instead.
8) Do I need hospital tips on a swing clear hinge for a patient room door?
Hospital tips are an option (HT) on the FBB258, not what ships by default. The standard build is flush tips. Hospital tips bevel the top and bottom of the barrel so gowns, IV lines, and sleeves cannot catch or hang on the hinge, which is why behavioral health, patient rooms, and geriatric units specify them. If you are ordering for general accessibility work, offices, retail, or corridor doors, flush tips are the normal choice. Specify HT at order time if you need it, since it is a different part, not a field change.
9) What is the difference between ball bearing and plain bearing hinges, and which do I need?
Ball bearings carry the door weight on races between the knuckles, so the hinge stays quiet and free through a high cycle count. The FBB258 runs two Stanley permanently lubricated non detachable ball bearings. Plain bearing hinges have no bearing races and rely on metal riding on metal, which is fine on low traffic and lighter doors but starts to bind and squeak sooner under real commercial use. If you want a swing clear leaf with a plain bearing instead, the Hager 1260 is a full mortise swing clear plain bearing hinge. For a plain bearing commercial hinge without the swing clear geometry, there is the Hager 1279.
10) Does this hinge have to be handed when I order it?
No handing to call out on the FBB258. Full mortise butt hinges with a removable pin are symmetrical, the pin drops from the top either way, and the same part works on a left hand or right hand door. What you do have to get right is which side of the frame the door is hinged on before you cut the mortises, because swing clear only recovers the opening on the side the door swings to. Order by size, finish, and tip style, and the hand takes care of itself.
11) Can I run power through this hinge for an electric strike or card reader on the door?
The FBB258 is a mechanical hinge with no through wire, so there is no path for power to the door leaf through it. If your opening needs power transfer for an electric lock, exit device, or door position switch, you want an electrified hinge instead. The ACSI 5BB1 is a 4-1/2 by 4-1/2 five knuckle ball bearing full mortise hinge with concealed electric through wire, four wire at 28 gauge, in the same size prep. Note that it is not a swing clear leaf, so you cannot get both the through wire and the clear width gain from that one part.
12) What is the closest standard hinge if I don't need swing clear but want the same bearing quality?
Stay with a five knuckle ball bearing full mortise hinge in 4-1/2 by 4-1/2 square corner and you keep the same prep and the same bearing behavior without paying for the swing clear leaf. The Don-Jo BB74545 is steel, square corner, five knuckle in that size at standard duty, and the McKinney TCA2314 and TCA2317 are square corner five knuckle full mortise hinges in the same 4-1/2 by 4-1/2. If you want a concealed bearing look at the same medium duty rating as the FBB258, the Stanley Security CB1960R is the standard weight concealed bearing hinge in the same Architectural Hinges series.
13) If I need corrosion resistance instead of steel on a full mortise ball bearing hinge, what is the alternative to the BEST FBB258?
The Don-Jo BB94545 is a 4-1/2 by 4-1/2 stainless steel full mortise ball bearing hinge with square corners, and the Don-Jo BB84545 is the same size in brass, finished satin chrome. Both are standard duty conventional hinges. The BEST FBB258 is steel, medium duty, and swing clear - the stainless and brass options change the base material but give up the swing clear geometry. For a wash-down or exterior-adjacent opening where clear width is not required, the BB94545 material is the reason to switch.
14) Can a residential hinge like the Hager 1541 replace a BEST FBB258 in an apartment building?
They are built for different service. The Hager 1541 is a full mortise plain bearing residential hinge in stainless steel with a 5 knuckle design. The BEST FBB258 is specified for commercial use, medium duty, with two ball bearings and swing clear geometry. In a multi-tenant building, corridor and unit entry doors that see constant traffic or need accessible clear width are the FBB258 case; the 1541 is a residential-service plain bearing part and will not deliver either the bearing type or the clear opening.
15) How do the McKinney TCA2314 and TCA2317 compare to the BEST FBB258 for standardizing across a facility?
The McKinney TCA2314 and TCA2317 are both square corner 5 knuckle full mortise hinges at 4-1/2 by 4-1/2, standard duty. They match the BEST FBB258 on size, corner style and knuckle count, which is what makes the mortise prep common across a door schedule. The FBB258 differs in being a medium duty ball bearing swing clear hinge. A practical facility standard uses the conventional McKinney hinges on the general door population and specifies the FBB258 only at the openings that must give up their clear width - accessible restrooms, patient rooms, and tight corridors.
16) Is a 4-1/2 by 4 inch hinge such as the Don-Jo BB74540 a drop-in for a BEST FBB258?
Not without checking the frame. The Don-Jo BB74540 is a 4-1/2 inch by 4 inch full mortise ball bearing hinge in satin chrome, standard duty - the leaf is a half inch narrower than the 4-1/2 by 4-1/2 BEST FBB258, so the existing mortise and screw pattern will not line up on a straight swap. Beyond the size, the BB74540 is a conventional hinge and the FBB258 is swing clear, which changes how the door sits relative to the opening. Measure the existing mortise before ordering either.
17) What finish does the BEST FBB258 swing clear hinge come in?
Satin chrome, 652, on steel. That is the standard commercial finish and it will sit alongside 626 satin chrome lockset and closer trim without looking off, since 652 is the plated steel equivalent of 626 on brass. If you are matching an existing set of Don-Jo hinges in satin chrome, the BB74540 in that finish is the same family of look. For a corrosive or exterior application where plated steel will not hold up, a stainless hinge such as the Don-Jo BB94545 is the material to move to.
18) Where do I find the hinge sizing and mortise layout before I cut the door?
BEST publishes the layout documents for these hinges and they are attached to the FBB258: a five knuckle ball bearing catalog, a general hinge information catalog, a hinge size chart for picking width and height against door thickness and trim projection, and an installation guide covering the mortise cuts and screw pattern. Pull the size chart first, because on a swing clear application the hinge width has to account for the door being carried clear of the frame, and that is the number that decides whether the leaf you ordered will actually let the door pass the stop.
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Does the BEST BEST-FBB258-652-4.5 come with a warranty?
Absolutely. The BEST BEST-FBB258-652-4.5 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST BEST-FBB258-652-4.5?
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