Cal-Royal SC8456 Grade 1 Corri...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$321.05
$245.86
Cal-Royal SC8456 Grade 1, Corridor Mortise Lockset

Cal-Royal SC8456 Grade 1 Corridor Mortise Lockset with Interchangeable Core Prep

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Model: SC8456 SS US26D
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$321.05
$245.86
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Cal-Royal SC8456 Grade 1 Corridor Mortise Lockset with Interchangeable Core Prep

The Cal-Royal SC8456 is a Grade 1 corridor mortise lockset engineered for 1 ¾" (44.5mm) thick standard doors with a 2 ¾" (70mm) backset and 3 7/8" (98mm) center-to-center dimension. Built with a heavy-duty wrought steel lock case that is zinc dichromate plated, this lockset conforms to ANSI A156.13 Grade 1 standards and is tested to exceed 1,000,000 cycles. Featuring a fully reversible design that retrofits Schlage L9000 Series mortise locks without additional door drilling, the SC8456 accepts 6-pin solid brass "C" keyway cylinders standard and is compatible with interchangeable cores from BEST, FALCON, and ARROW.

Key Features

  • Door Compatibility: Designed for 1 ¾" (44.5mm) thick standard doors with 2 ¾" (70mm) only backset.
  • Heavy-Duty Durability: Lock body conforms to ANSI A156.13 Grade 1 and exceeds 1,000,000 cycles for long-term reliability in high-traffic corridors.
  • Heavy-Duty Construction: Wrought steel lock case with zinc dichromate plating; armor faceplate available in brass or stainless steel, 8" x 1 7/32" (203mm x 31.3mm) per ANSI A115.1.
  • Deadbolt & Latch Bolt: 1" (25.4mm) hardened stainless steel deadbolt throw and ¾" (19mm) one-piece stainless steel latch bolt with anti-friction reversible tongue.
  • Field Reversible Lock Hand: Lock bodies are easily field reversible, eliminating the need to specify hand when ordering.
  • Cylinder & Keyway Options: 6-pin solid brass "C" keyway standard, with interchangeable core capability accepting compatible 6 or 7 pin BEST, FALCON, and ARROW cores.
  • Clutch Lever Design: Outside lever features a Free-Wheeling clutch that rotates when locked, reducing excessive force on the lever and decreasing the risk of breakage or damage.
  • Retrofit Compatibility: Retrofits Schlage L9000 Series mortise locks without drilling additional holes for sectional and escutcheon trims; no exposed mounting screws on inside or outside trims.

Certifications & Compliance

  • ANSI / BHMA A156.13 Series 1000, Operational & Security Grade 1 Standards
  • UL and UL Listed to Canadian safety standard for A label (3-hour fire door); stamped letter F and UL symbol on armor faceplate
  • Meets positive pressure requirements UL 10C and UBC 7-2 (1997)
  • Meets ADA requirements, specifically designed for Barrier Free Application

Technical Specifications

  • Product Group: Mechanical Locks
  • Cylinder and Keyways: 6-pin solid brass "C" keyway standard, Interchangeable Core locks will accept compatible 6 or 7 Pin cores with BEST, FALCON and ARROW (SFIC)
  • Product Subgroup: Mortise Locks and Trim
  • Latch Throw: 3/4" (latch), 1" (deadbolt)
  • Commercial/Residential: Commercial
  • Keyed: Yes
  • Electronic: No
  • (CTC) Center-to-Center: 3-7/8"
  • Door Hand Direction: Field Reversible
  • Door Thickness Range: 1-3/4"
  • Face Plate: Brass or stainless steel, 8" x 1-7 /32"
  • Product Category: Mechanical Locks
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal SC8456?

Cal-Royal SC8456 corridor mortise locksets deliver professional-grade reliability with a heavy-duty wrought steel lock case rated to exceed 1,000,000 cycles under ANSI A156.13 Grade 1 standards. Engineered for demanding commercial applications, the free-wheeling clutch lever design and field-reversible construction make this lockset a dependable choice where consistent performance and code compliance are essential.

Product Specs

Product Group:
Mechanical Locks
Cylinder and Keyways:
6-pin solid brass "C" keyway standard, Interchangeable Core locks will accept compatible 6 or 7 Pin cores with BEST, FALCON and ARROW (SFIC)
Grade:
Grade 1
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Lockset
ANSI/BHMA:
ANSI Standard A115.1
Latch Throw:
3/4" (latch), 1" (deadbolt)
Commercial/Residential:
Commercial
Lock Type:
Mortise
Keyed:
Yes
Handle Type:
Lever
Lock Function:
Corridor
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
SC8456
(CTC) Center-to-Center:
3-7/8"
Product Function:
Corridor
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Face Plate:
Brass or stainless steel, 8" x 1-7 /32"
Product Substrate:
Steel
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Cal-Royal SC8456 SS US26D – Frequently Asked Questions

1) Can I replace a Schlage L9000 mortise lock with the Cal-Royal SC8456 without re-drilling the door?
Yes. The SC8456 retrofits Schlage L9000 Series mortise locks with no additional door drilling, for both sectional and escutcheon trims. That works because it shares the L9000 geometry a retrofit depends on: 2-3/4 inch backset, 3-7/8 inch center-to-center, and an 8 x 1-7/32 inch armor faceplate to ANSI A115.1. Neither the inside nor outside trim has exposed mounting screws, so the old cutout stays covered.
2) Do I need to specify hand when I order a Cal-Royal SC8456 mortise lock?
No. The SC8456 lock body is field reversible, so one part number covers left and right hand openings and the anti-friction latch tongue flips in the field. For a property manager stocking spares across a building, that means a single lock on the shelf covers every corridor door regardless of swing.
3) What does the corridor function do on the SC8456, and is it the right function for an office suite door?
Corridor function on the SC8456 means a keyed lever plus a separate 1 inch deadbolt, so staff can leave the latch operating for daytime traffic and throw the deadbolt to secure the suite after hours. It's the function you want on an entry off a public corridor. If you instead want a door that stays locked outside at all times with no deadbolt to remember, a storeroom lock like the Accentra 8805FL is the better fit; for a classroom door, the Corbin Russwin ML2003 is the Grade 1 classroom equivalent.
4) Will the SC8456 accept my BEST small format interchangeable cores?
Yes. The interchangeable core version of the SC8456 takes compatible 6 or 7 pin SFIC cores from BEST, FALCON, or ARROW, so it drops straight into an existing SFIC masterkey system. If you're not on SFIC, it ships standard with a 6-pin solid brass "C" keyway cylinder.
5) Is the Cal-Royal SC8456 approved for a 3-hour fire rated door and ADA openings?
Yes on both. The SC8456 is UL Listed and UL Listed to the Canadian standard for A label (3-hour) fire doors, with the letter F and UL symbol stamped on the armor faceplate for the inspector. It meets positive pressure requirements UL 10C and UBC 7-2 (1997), and the lever trim meets ADA barrier-free requirements. The lock body is ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, tested past 1,000,000 cycles.
6) The door is 1-5/8 inch thick. Will the Cal-Royal SC8456 fit, or is there another mortise lock?
The Cal-Royal SC8456 is engineered for 1-3/4 inch thick doors only. On a thinner leaf, the Alarm Lock Trilogy electronic mortise locks cover a 1-5/8 inch to 1-7/8 inch door thickness range: the DL2700CR is a Grade 1 classroom function lock with a weatherproof design, the DL3500CR is a Grade 1 classroom lock holding 300 user codes, and the DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad. On thicker doors, the Hager 3800 Series passage locks run 1-3/4 inch to 2-1/2 inch and the Baldwin 6301 lever by lever entry/apartment mortise lock body covers 1-3/4 inch and over.
7) We need the corridor door to lock and unlock from the access control panel. What replaces the Cal-Royal SC8456?
The Cal-Royal SC8456 is a mechanical corridor lockset with no electrical operation. For a corridor opening tied to access control on a 1-3/4 inch door, the Schlage L9092EU with 03A trim is a heavy duty corridor function mortise lock with an electric lock/unlock outside lever, keyed outside, request to exit signalling, and 12/24VDC operation. The Command Access ML190 is a heavy duty motorized mortise lock with storeroom function, field selectable fail safe or fail secure operation and 24VDC power, and the BEST 45HW is a heavy duty wired electromechanical mortise lock offering 12V or 24V operation.
8) What is the difference between the Cal-Royal SC8456 and the Accentra 8805FL mortise lock?
Both are Grade 1 mortise locks, but they are different functions. The Accentra 8805FL is a storeroom function lock from the 8800 Series furnished with an Arcadia lever; a storeroom lock keeps the outside lever locked at all times and requires a key for every entry. The Cal-Royal SC8456 is a corridor function lock with a 1 inch deadbolt throw in addition to its 3/4 inch latch, giving the room occupant a deadbolt to throw from inside. Order the 8805FL where the opening is a supply or equipment room, and the SC8456 where the opening is a corridor or dormitory door that needs occupant-controlled deadbolting.
9) We want keypad or credential access on a corridor door instead of a key. What mortise lock replaces the Cal-Royal SC8456?
The Cal-Royal SC8456 is a mechanical, non-electronic lockset keyed to a 6-pin brass C keyway. For credential-based access on the same 1-3/4 inch door, the Schlage CO-100 is a Grade 1 heavy duty standalone electronic mortise lock with a keypad reader. The TownSteel FME-2000 Series is a Grade 1 heavy duty mortise lockset with RFID technology for a 1-3/4 inch door, and the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating, which matches the A label 3-hour fire door rating the SC8456 is UL listed for. The BEST 45HZ EZ Series electronic keypad mortise lock adds key override, keeping a mechanical key path on the opening.
10) Can I put a Cal-Royal SC8456 on an aluminum storefront or glass door?
The Cal-Royal SC8456 is a commercial mortise lockset built for 1-3/4 inch thick standard doors with a 2-3/4 inch backset and an 8 inch armor faceplate, which is a hollow metal or wood door prep. For narrow stile aluminum openings, the Alarm Lock DL1300NW Trilogy Networx wireless electronic mortise lock is made for Adams Rite deadlatches. On a glass door bottom rail, the Kaba Ilco BR Series bottom rail lock is the applicable device. The Dormakaba E-Plex 2066 Series electronic pushbutton keyless mortise lock is specified for wide stile doors.
11) I am replacing a Baldwin 6310 mortise lock. Will the Cal-Royal SC8456 drop in?
Check the backset before ordering. The Baldwin 6310 entry/storeroom mortise lock body is a 2-1/2 inch backset unit covering 1-3/8 inch doors and over, and the 6310190RRLS is the right hand reverse lever by lever version of the same 2-1/2 inch backset lock. The Cal-Royal SC8456 is a 2-3/4 inch backset only, with a 3-7/8 inch center-to-center dimension and a 1-3/4 inch door thickness. A 2-1/2 inch backset pocket will not accept it without rework. The SC8456 does remove the handing question, since its lock body is field reversible rather than ordered right hand reverse.
12) What is the difference between the sectional and escutcheon trim options on the SC8456, and which do I order?
Trim comes in fourteen designations, paired as sectional and escutcheon versions of the same lever: AE/AS, GE/GS, HE/HS, JE/JS, SE/SS, TE/TS and WE/WS. Sectional is a rose behind the lever with a separate cylinder ring; escutcheon is one long plate covering lever and cylinder together. Escutcheon is the usual pick when you're covering an older prep or scarred door face. Either style retrofits a Schlage L9000 without extra drilling, so the choice is aesthetic and cover, not fit.
13) Will the lever break if someone yanks on a locked corridor door?
The outside lever on the SC8456 uses a free-wheeling clutch that spins when the lock is locked, so force applied to the lever isn't transmitted into the lock body. That's the failure a wrought steel case alone doesn't prevent, and it's the reason this holds up in schools, dorms, and high-traffic tenant corridors. The case itself is wrought steel with zinc dichromate plating.
14) What else could I buy instead of the Cal-Royal SC8456 for a Grade 1 corridor door?
The closest cross-brand equivalent is the Sargent 7925, a Grade 1 heavy duty corridor/dormitory mortise lock with rose trim and a single cylinder deadbolt, so it carries the same deadbolt-plus-latch arrangement. If your opening is thicker than 1-3/4 inches the SC8456 is out; the Hager 3800 Series covers 1-3/4 to 2-1/2 inches on the same 2-3/4 inch backset, though in passage and office functions rather than corridor. Where the door needs no key at all, the Falcon MA101 is a Grade 1 heavy duty passage mortise lock.
15) Is a mortise lock like the SC8456 the right choice, or should I use a cylindrical lockset?
A mortise lock needs a rectangular pocket cut into the door edge, so it's the choice when the door is already prepped for one or when you want a separate deadbolt in the same body, which is what the SC8456 gives you at a 1 inch deadbolt throw alongside the 3/4 inch latch. If your doors are bored for a 161 cylindrical prep, converting to mortise means a new door or a mortise kit. A Grade 1 cylindrical lock like the Schlage PC Series drops into that bored prep instead.
16) The door does not need to be keyed. Is there a simpler mortise lock than the Cal-Royal SC8456?
The Cal-Royal SC8456 is a keyed lockset with a 6-pin brass C keyway and interchangeable core capability. Where the opening only needs to latch, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for a 1-3/4 inch door, the same thickness the SC8456 is built for. The Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series that is fire rated and field reversible, matching the SC8456 field reversible lock body. Hager also offers passage function in the 3800 Series at a 2-3/4 inch backset, the same backset as the SC8456: the 3810S with rose trim and the 3810E with escutcheon, both covering a 1-3/4 inch to 2-1/2 inch door thickness range.
17) Is the BEST 45H mortise lock body a substitute for the Cal-Royal SC8456?
They serve different scopes. The BEST 45H is a heavy duty mortise lock body with public entrance function and field reversible operation, and the 45HCA is a heavy duty lock body with intruder function; both are lock bodies, so trim and cylinder are specified separately. The Cal-Royal SC8456 is supplied as a complete corridor lockset with lever trim, ordered in sectional or wide escutcheon trims and five finishes including US26D satin chrome and US32D satin stainless steel. Both share field reversible operation. The SC8456 also accepts 6 or 7 pin BEST interchangeable cores, so an existing BEST small format core keying system carries over to it.
18) What mortise lock should I use for a behavioral health or patient room instead of a standard corridor lockset?
The Cal-Royal SC8456 is a conventional lever lockset with an outside free-wheeling clutch lever. Where an opening requires ligature resistance, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset with passage function for a 1-3/4 inch door, and the MRX-A-01 is the same passage function in a ligature resistant arch trim, satin stainless steel. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset in the 195 Series, ligature resistant and ADA compliant in satin stainless steel; the SC8456 also meets ADA requirements and is offered in a US32D satin stainless steel finish.
19) Will a Schlage L0170 work as a replacement for a Cal-Royal SC8456?
No. The Schlage L0170 is a Grade 1 heavy duty non-keyed half dummy trim in the L Series for a 1-3/4 inch door; a dummy has no latch, no cylinder and no moving mechanism, so it is pull hardware only. The Cal-Royal SC8456 is a keyed corridor lockset with a 3/4 inch latch bolt and 1 inch deadbolt. The two do relate on the opening, because the SC8456 retrofits Schlage L9000 Series mortise locks without drilling additional holes for sectional and escutcheon trims, so an L Series door prep will take it. Emtek Brisbane 3019, Memphis 3102, Hamilton 3104 and Manhattan 3106 mortise entrance locksets are likewise dummy function and do not latch.
20) Is a Schlage PC10 cylindrical lock an alternative to the Cal-Royal SC8456?
Only if the door prep changes. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose trim for a 1-3/4 inch door; a cylindrical lock installs through bored holes in the door face. The Cal-Royal SC8456 is a mortise lock, which requires a pocket cut into the door edge and uses an 8 inch by 1-7/32 inch armor faceplate. A door already mortised for the SC8456 cannot take a PC10 without a new leaf or a filler, and the PC10 is passage function, not the keyed corridor function of the SC8456.
21) Which mortise lockset should I standardize on across a facility if I want one Grade 1 lock body in several functions?
The Cal-Royal SC8456 is a Grade 1 corridor lockset with a steel lock case, field reversible so a single part number covers both hands, and it takes 6 or 7 pin BEST, FALCON and ARROW interchangeable cores, which lets a facility keep one small format core keying system across openings. Where other functions are needed on the same standard, the Accentra 8805FL covers Grade 1 storeroom in the 8800 Series, the Corbin Russwin ML2003 covers Grade 1 classroom in the ML2000 Series, and the Sargent 7925 covers Grade 1 corridor/dormitory in the 7900 Series. The Falcon MA101 covers Grade 1 heavy duty passage in the MA Series and is fire rated.
22) Is the Dormakaba Saffire LX-I-M002 an equivalent to the Cal-Royal SC8456?
They are built to different standards. The Dormakaba LX-I-M002 Saffire is an electronic RFID mortise lockset with BLE mobile access, rated BHMA Grade 2. The Cal-Royal SC8456 is Grade 1 and mechanical, with a 6-pin brass C keyway. If the requirement is mobile and card credentials in a Grade 1 body, the Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card lock in a back to back mortise configuration, and the Dormakaba PowerPlex P2066 Series is a mortise lock in the PowerPlex 2000 Series.
23) Is the Marks USA 21AC or 22AC ornamental iron mortise lock interchangeable with the Cal-Royal SC8456?
No. The Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, both built for a 1 inch door thickness, which is a gate or ornamental iron stile rather than a commercial door leaf. The Cal-Royal SC8456 is built for a 1-3/4 inch thick door with a lever handle and a 2-3/4 inch backset. The two are not cross-compatible in either direction because the door thickness alone rules it out.
24) Is the Codelocks CL2255 a substitute for a Cal-Royal SC8456 on a high traffic corridor door?
They are rated for different service. The Codelocks CL2255 is a medium duty electronic tubular mortise latch in the CL2000 Series, finished in brushed steel. The Cal-Royal SC8456 is a Grade 1 lock body under ANSI/BHMA A156.13 tested to exceed 1,000,000 cycles, with a wrought steel case and a 3/4 inch stainless steel latch bolt. For a corridor carrying constant traffic, match the duty rating to the door count; the CL2255 suits lighter openings where a keypad latch is all the door needs.
25) What finishes does the Cal-Royal SC8456 come in to match the rest of my building?
Five: US3 polished brass, US4 satin brass, US10B antique bronze oiled, US26D satin chrome, and US32D satin stainless steel. US26D is the usual match for commercial corridors already running satin chrome levers and closers; US32D pairs with stainless push/pull and stainless frames.
26) Can I standardize a whole facility on the SC8456 mortise lock across different door functions?
For corridor and tenant entry doors, yes, and the field reversible body plus SFIC core prep means one stock number and one keying system covers them all. It won't cover every opening though. Restrooms and offices need privacy and passage functions, which this lock doesn't do, and thicker doors are outside its 1-3/4 inch range. A common approach is standardizing on the trim style and finish across the facility and varying the function by opening.
27) Are Sargent 130KB and 130W thumbturns compatible with the Cal-Royal SC8456?
Those are trim pieces, not locks. The Sargent 130KB is a standard duty mortise thumbturn from the 8200 Series and the 130W is a standard duty mortise thumbturn with a round backplate from the 7800 Series; each is designed for its own manufacturer's lock body. The Cal-Royal SC8456 is ordered as a complete lockset with its trim selected from the sectional and wide escutcheon options, with no exposed mounting screws on the inside or outside trim, so its inside control comes with the lockset rather than being sourced separately.
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Does the Cal-Royal SC8456 SS US26D come with a warranty?
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