TownSteel CRX-K-110 ANSI Grade...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$836.00
$671.52
TownSteel CRX-K-110 ANSI Grade 1 Classroom Intruder Cylindrical Lockset with Ligature-Resistant Knob

TownSteel CRX-K-110 ANSI Grade 1 Classroom Intruder Cylindrical Lockset with Ligature-Resistant Knob

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Model: CRX-K-110-630
$836.00
$671.52
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$836.00
$671.52
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TownSteel CRX-K-110 ANSI Grade 1 Classroom Intruder Cylindrical Lockset with Ligature-Resistant Knob

The TownSteel CRX-K-110 is an ANSI Grade 1 cylindrical lockset with a Classroom Intruder function and a ligature-resistant stainless steel knob, purpose-built for behavioral, mental, and psychiatric healthcare facilities housing at-risk patients. This Heavy Duty knobset features double cylinder keyed function, tamper-resistant mounting screws, and fits door thickness ranges of 1-3/4" to 2" on both wood and metal doors.

Key Features

  • Door Thickness Compatibility: Fits doors from 1-3/4" to 2" thick, installs on wood or metal doors.
  • Ligature-Resistant Knob: Stainless steel knob design reduces ligature risk points for behavioral and psychiatric care settings.
  • Tamper-Resistant Mounting Screws: Deters unauthorized removal or tampering in sensitive-care environments.
  • Heavy Duty ANSI Grade 1 Construction: Commercial-grade cylindrical lock built for high-traffic, high-risk institutional use.
  • Classroom Intruder Function, Double Cylinder Keying: Lets staff lock down the door from either side during emergencies.
  • Face Plate: 1-1/8" x 2-1/4" square corner for standard door prep compatibility.
  • Door Strike: 1-1/4" x 4-7/8" ASA strike included for reliable latch engagement.
  • Universal Door Mounting: Installs on both wood and metal doors for flexible specification across facility types.

Certifications & Compliance

  • ANSI Grade 1 Certified

Technical Specifications

  • Series: CRX-K Series
  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • Product Type: Knobsets
  • Subcategory: Cylindrical Locks
  • Commercial/Residential: Commercial
  • Keyed Function: Double Cylinder
  • Duty Level: Heavy Duty
  • Product Function: Classroom Intruder
  • Door Thickness Range: 1-3/4" to 2"
  • Face Plate: 1-1/8" x 2-1/4", square corner
  • Door Strike: 1-1/4" x 4-7/8", ASA Strike
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Behavioral Health Facilities
  • Psychiatric Care Units
  • Mental Health Treatment Centers
  • Educational Facilities
  • Correctional Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings

Why TownSteel CRX-K?

TownSteel CRX-K Series locksets combine ANSI Grade 1 heavy duty construction with a purpose-built ligature-resistant stainless steel knob and tamper-resistant mounting screws, delivering dependable security for demanding behavioral and psychiatric care environments. Engineered for installation on both wood and metal doors with a 1-3/4" to 2" thickness range, the CRX-K-110 gives facility managers a Classroom Intruder function solution built specifically for patient and staff safety.

Product Specs

Series:
CRX-K Series
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Knobsets
Subcategory:
Cylindrical Locks
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Knob
Keyed Function:
Double Cylinder
Duty Level:
Heavy Duty
Grade:
Grade 1
Product Function:
Classroom Intruder
Door Thickness Range:
1-3/4" to 2"
Face Plate:
1-1/8" x 2-1/4", square corner
Door Strike:
1-1/4" x 4-7/8", ASA Strike
Product Category:
Mechanical Locks
Department:
Door Hardware

TownSteel CRX-K-110-630 – Frequently Asked Questions

1) What does the classroom intruder function on the TownSteel CRX-K-110 actually do at the door?
The CRX-K-110 is a double cylinder classroom intruder lock, meaning it takes a key on both sides. Staff can lock the outside knob from inside the room with a key, without opening the door and stepping into a corridor. It is a Grade 1 cylindrical knob lock built for behavioral, mental and psychiatric healthcare settings where patients are at risk, so the knob itself is ligature resistant stainless steel and the mounting screws are tamper resistant.
2) Will the CRX-K ligature resistant knob lock fit a 1-3/4 inch door?
Yes. The CRX-K-110 covers doors from 1-3/4 inches up to 2 inches thick, so standard 1-3/4 inch commercial doors are in range. It will not work on a 1-3/8 inch door, which rules out a lot of older interior residential-weight doors. The lock mounts on either wood or hollow metal.
3) Which backset do I order for the CRX-K-110, and when would I need the 5 inch?
Two backsets are offered: 2-3/4 inch, which is the standard on commercial cylindrical locks, and 5 inch. The 5 inch is for wide-stile or detention-style frames where the bore has to sit farther off the door edge. Measure from the door edge to the center of the existing cross bore and match it, because the latch is not interchangeable between the two.
4) Will the CRX-K knob lock drop into my existing ASA strike prep?
It ships with a 1-1/4 by 4-7/8 inch ASA strike, which is the standard commercial hollow metal frame prep. If your frame is already cut for an ASA strike, the new strike lands in the same cutout. The latch face plate is 1-1/8 by 2-1/4 inches with square corners, so a door edge previously prepped for a round corner face plate will need the corners squared or a filler.
5) What is the closest Grade 1 cylindrical knob lock to the TownSteel CRX-K-110 if the opening does not need a ligature-resistant knob?
The CRX-K-110 is a Grade 1 heavy duty cylindrical knob lockset with a ligature-resistant stainless steel knob and tamper-resistant mounting screws, built for behavioral and psychiatric environments. On a standard commercial opening where ligature resistance is not part of the spec, the Sargent 8XG04 is a Grade 1 heavy duty storeroom/closet knob lock with a 2-3/4 inch backset, and the BEST 8K Series AB is a Grade 1 heavy duty entrance function single cylinder knob lock. Both hold the same ANSI grade and duty level; neither carries the ligature-resistant knob or the tamper-resistant screw package.
6) Is the Dexter C2000 classroom knob lock a substitute for the TownSteel CRX-K-110 classroom intruder lock?
They are different functions despite similar names. The CRX-K-110 is a classroom intruder function with a double cylinder keyed arrangement, so the door can be locked from inside the room with a key. The Dexter C2000 classroom ball knob lock is a Grade 2 classroom function, keyed on the outside only, meaning the door is secured from the corridor side. The CRX-K-110 is also Grade 1 heavy duty with a ligature-resistant stainless steel knob, while the Dexter is Grade 2 and fits 1-3/8 to 1-3/4 inch doors.
7) My door is 1-3/8 inch thick and the TownSteel CRX-K-110 will not fit. What Grade 1 knob lock covers that thickness?
The CRX-K-110 fits doors 1-3/4 to 2 inches thick, so a 1-3/8 inch leaf is outside its range. Among Grade 1 cylindrical knob locks that reach down to 1-3/8 inch, the Corbin Russwin CK4851 entrance/office lock covers 1-3/8 to 2 inches with a conventional cylinder, the Corbin Russwin CK4310 passage/closet lock covers 1-3/8 to 2 inches non-keyed, and the Falcon X101 heavy duty passage knobset covers 1-3/8 to 2-1/4 inches with an interchangeable core. None of these carry the ligature-resistant knob or the classroom intruder function.
8) What keying options do I pick when ordering the CRX-K-110 for a facility?
Keying is a required choice: keyed different (the standard), keyed alike if you want a group of doors on one key, or a specific key code for an existing system, in which case you enter the code with the order. There is also a non-keyed selection for functions that do not take a cylinder. Since the 110 is a double cylinder function, plan on both sides being keyed.
9) I need to standardize a healthcare wing on one lock. Is the CRX-K a full commercial Grade 1 lockset?
Yes. The CRX-K is an ANSI Grade 1 cylindrical lockset rated heavy duty and catalogued for commercial use, with an ASA strike and mounting for both wood and hollow metal doors. That makes it workable across a wing of patient room doors on a single prep. For the non-patient doors in the same wing that do not need the ligature knob, Grade 1 cylindrical options like the Corbin Russwin CK4851 entrance/office or the Falcon X101 passage with interchangeable core keep the duty level consistent.
10) Is the CRX-K a mortise lock or does it go in a standard 2-1/8 inch bore?
It is a cylindrical, or bored, lockset, not a mortise lock. That means a cross bore through the door face and an edge bore for the latch rather than a pocket cut into the door edge, which is why it retrofits into most existing commercial knob lock preps once the backset and 1-3/4 to 2 inch thickness match.
11) What should I use on the non-secured doors in the same behavioral healthcare corridor where the TownSteel CRX-K-110 goes on the classrooms?
The CRX-K-110 is a keyed double cylinder classroom intruder lock, which is more function than a corridor or closet door needs. For non-keyed openings in the same heavy duty tier, the Falcon X101 is a Grade 1 heavy duty passage knobset that is fire rated, and the Corbin Russwin CK4310 is a Grade 1 passage/closet knob lock. For a door that only needs pull trim, the Schlage A170 is a single dummy knob trim. Keep in mind none of these use the ligature-resistant stainless steel knob that the CRX-K-110 carries, so specify accordingly in patient-accessible areas.
12) Can I use a Grade 2 knob lock like the Sargent 6G04 instead of the TownSteel CRX-K-110 to save on a project?
The Sargent 6G04 is a Grade 2 standard duty storeroom/closet knob lock with a single cylinder, so it is a lighter-duty lock with a different function. The CRX-K-110 is Grade 1 heavy duty with a double cylinder classroom intruder arrangement, a ligature-resistant stainless steel knob and tamper-resistant mounting screws. If the spec calls for lock-from-inside classroom intruder operation or ligature resistance, the 6G04 does not meet it. If the opening is a plain storeroom door in an area with no patient risk, the 6G04 is the lighter alternative.
13) Do residential-style knobsets such as Kwikset 400P or Baldwin Estate work as a lower-cost swap for the TownSteel CRX-K-110?
No. The CRX-K-110 is a commercial Grade 1 heavy duty cylindrical lockset with a ligature-resistant knob for behavioral and psychiatric facilities. The Kwikset 400P-CP Polo keyed entry knob is a Grade 3 entrance lock for 1-3/8 to 1-3/4 inch doors, and the Baldwin Estate 5000 Baltimore knob is a preconfigured passage set with a 2-3/8 inch backset. Those are decorative and light-duty residential entry products, not classroom intruder function locks, and neither addresses ligature risk.
14) I need a 5 inch backset knob lock for a wide stile opening. Does the TownSteel CRX-K-110 cover it or do I need another brand?
The CRX-K-110 is offered in both a 2-3/4 inch standard backset and a 5 inch backset, both in 630 satin stainless steel, so the wide stile condition is covered within the same Grade 1 ligature-resistant series. Comparable commercial knob locks such as the Sargent 8XG04 and the Falcon W101 are listed at a 2-3/4 inch backset, so if 5 inches is the requirement the CRX-K-110 handles it without switching lines.
15) What finish does the TownSteel CRX-K-110 come in?
One finish: 630, satin stainless steel, on both backset options. That matches the stainless knob and is the usual finish spec for healthcare and institutional openings, so it will sit alongside 630 hinges, push plates and exit hardware already in the building.
How fast can I get the TownSteel CRX-K-110-630 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TownSteel CRX-K-110-630 come with a warranty?
Absolutely. The TownSteel CRX-K-110-630 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 TownSteel CRX-K-110-630?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the TownSteel CRX-K-110-630 from ZenSupply?
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