Kaba Ilco 451 Series Deadlatch...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$41.12
Kaba Ilco Kaba Ilco 451 Series Deadlatch Mortise Locks ILC-451

Kaba Ilco 451 Series Deadlatch Mortise Locks

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Model: 451-F-3RH-628/313
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$41.12
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Kaba Ilco 451 Series Deadlatch Mortise Locks

The Ilco line of deadbolts is offered in 7 standard finishes plus 2 Premier Finishes (32D Satin Stainless Steel and 03P Permanent Polished Bright Brass over stainless steel). These finishes are the perfect solution for keeping that "like new" finish for years.

 

Features

  • For Aluminum Stile Doors
  • Key controlled bolt holdback feature offers flexibility for traffic control on buildings that require free entrance during specific times and exit only for others
  • Auxiliary latch bolt feature when in locked position provides additional security
  • Zinc latch with Delrin insert for quiet operation
  • Available left or right handed, field reversible handing
  • Steel case with corrosion resistant plating
  • Accepts standard 1 5/32" (29.36 mm) Zinc or Brass threaded mortise cylinder
  • Cycle testing exceeds ANSI Grade 1 standards
  • Interchangeable with 185 Series Deadbolts

 

Technical Data:

  • Backsets: 31/32" (24.59 mm), 1 1/8" (28.58 mm), 1 1/2" (38.1 mm)
  • Latchbolt Dimension: 5/8"W x 1 1/2"L (15.88 mm x 38.1 mm)

 

Handing:

  • Right Handed
  • Left Handed

 

Product Downloads

Product Specs

Product Group:
Mechanical Locks
Series:
415 Series
Product Subgroup:
Mortise Locks and Trim
Product Type:
Deadbolts
Subcategory:
Mortise Locks
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Deadbolt
Product Function:
Deadbolt
Product Category:
Mechanical Locks
Department:
Door Hardware

Kaba Ilco 451-F-3RH-628/313 – Frequently Asked Questions

1) Do I have to order the Ilco 451 deadlatch left hand or right hand?
You pick a hand on the order, left or right, but the handing is field reversible, so a lock that shows up the wrong way can be flipped on site instead of returned. If you're stocking for a building with doors swinging both ways, that means one part number covers both openings at a given backset.
2) What cylinder does the Ilco 451 mortise deadlatch take?
It accepts a standard 1-5/32 inch (29.36 mm) threaded mortise cylinder in zinc or brass. That's the common storefront mortise cylinder length, so if you're keying the door into an existing system you order the cylinder in your keyway and thread it in. The cylinder is not part of the lock case, so it has to be ordered separately.
3) Can I replace an Ilco 185 Series deadbolt with a 451 deadlatch?
Yes. The 451 Series is interchangeable with 185 Series deadbolts, so it drops into the same pocket. The difference is what happens at the strike: the 185 is a deadbolt, while the 451 is a deadlatch, meaning it latches on close instead of requiring a key or turn to throw the bolt. Swapping one for the other changes how the door operates, so make sure a latching function is what the opening wants.
4) I need a deadbolt for a 1-3/4 inch wood or hollow metal door, not a storefront. What should I use instead of the Ilco 451?
Don't use the 451 there. It's a mortise deadlatch for aluminum stile doors with backsets of 31/32 to 1-1/2 inch, which are stile dimensions, not door prep for a bored deadbolt. For a standard 1-3/4 inch commercial door, look at the Corbin Russwin DL3211 Grade 1 cylindrical deadlock, listed for 1-3/4 inch doors, or the Design Hardware D1 Series Grade 1 double cylinder deadbolt, also listed at 1-3/4 inch. If the door thickness varies across your building, the Corbin Russwin DL3011 covers 1-3/4 to 2-1/4 inch.
5) What is the closest equivalent to the Kaba Ilco 451 deadlatch mortise lock for a narrow stile aluminum door?
The Kaba Ilco 451 is a mortise deadlatch built for aluminum stile doors, with 31/32 inch, 1-1/8 inch and 1-1/2 inch backsets and a 5/8 inch by 1-1/2 inch latchbolt. The nearest mortise-case alternative from another maker is the Dormakaba D900, a small case mortise deadbolt in a cylinder x thumbturn function. The difference that decides the job is the bolt: the 451 throws a spring latchbolt with an auxiliary deadlatch plunger and a key controlled holdback, so the door latches on close, while the D900 is a deadbolt that must be thrown by key or turn each time. Use the 451 where the door must self-latch behind traffic and the D900 where the opening is locked deliberately at close of business.
6) I need a keyed mortise lock for a storefront door but no latching action, just a deadbolt. What should I order instead of the Ilco 451?
The Kaba Ilco 451 is a deadlatch, so its bolt is a spring latch with an auxiliary plunger rather than a straight deadbolt. For a keyed dead-throw bolt instead, the Dormakaba M1960 in the M1000 Series is a single cylinder deadbolt in a cylinder x thumbturn function with no trim, and the Dormakaba D900 is a small case mortise deadbolt supplied keyed different with SC keyways. Both give a bolt that stays where it is put, which suits an opening where the door is pulled shut and locked at a set time rather than one that has to latch every time it swings.
7) Can I use a standard tubular deadbolt like the Dexter DB1000 in place of a Kaba Ilco 451?
No, they prep differently. The Kaba Ilco 451 is a mortise lock cut into the edge of an aluminum stile door, with backsets of 31/32 inch, 1-1/8 inch and 1-1/2 inch measured for narrow stiles. The Dexter DB1000 single cylinder deadbolt is a Grade 1 bore-mounted deadbolt for doors 1-3/8 inch to 1-7/8 inch thick, and the Grade 1 Delaney LM Series single cylinder less core deadbolt is the same style of prep. Those need a cross bore through the face of the door, which a narrow aluminum stile does not have room for. Bored deadbolts belong on wood and hollow metal doors; the 451 belongs on the storefront.
8) What is the difference between the Kaba Ilco 451 and the Arrow E61 SFIC deadlock?
Both are keyed commercial locks, but the cylinder and the bolt differ. The Kaba Ilco 451 is a field reversible mortise deadlatch that accepts a standard 1-5/32 inch threaded zinc or brass mortise cylinder and comes in 31/32 inch, 1-1/8 inch and 1-1/2 inch backsets. The Arrow E61 in 26D is a Grade 2 single cylinder deadlock prepped for a small format interchangeable core and supplied less core, for doors 1-3/8 inch to 1-3/4 inch thick. Choose the E61 if the facility is keyed on an SFIC system and cores are swapped in house; choose the 451 if the site is on threaded mortise cylinders and the door needs to latch on close.
9) What is the bolt holdback feature on the Ilco 451 for?
Key controlled bolt holdback lets you hold the latch retracted with the key, so the door stays free to push open during business hours and goes back to latched, exit only, when you lock it down. Property managers and retail tenants use it on a storefront entrance so nobody has to prop the door in the morning. It's a keyed function, so only someone with a key can set or release it.
10) Does the Ilco 451 deadlatch have an anti-shim feature?
It has an auxiliary latch bolt that, with the main latch in the locked position, adds security by resisting the latch being pushed back. That's the standard defense against carding a storefront latch. The latch itself is zinc with a Delrin insert, which keeps the closing sound down on a high traffic entrance.
11) Is the Ilco 451 deadlatch rated for heavy commercial traffic?
It's a commercial lock and cycle testing exceeds ANSI Grade 1 standards, which is the durability tier specified for high use openings like a main entrance or a school corridor door. Combined with the plated steel case, it's built for a door that gets worked all day rather than a back office.
12) What is the difference between the Ilco 451 deadlatch and a surface mounted storefront deadbolt like the Codelocks CL200?
The 451 is a mortise lock: it goes inside the stile pocket, so the door has to be prepped or already cut for it, and it latches on close. The Codelocks CL200 is a surface deadbolt with key override that mounts to the face of the door, which is what you reach for when the stile isn't prepped and you don't want to cut it. If you want the same surface approach with a keypad instead of a key, the Codelocks CL2200 is an electronic surface deadbolt.
13) I'm standardizing entrance hardware across a portfolio of storefronts. How many part numbers do I need for the Ilco 451?
Six combinations exist: three backsets (31/32, 1-1/8, 1-1/2 inch) crossed with left and right hand. Because handing is field reversible, you can realistically stock by backset alone and set the hand at the door, which cuts the shelf down to three. Survey the stiles first, since backset is the only dimension that can't be adjusted on site.
14) Is there a non-keyed option for an exit only door instead of the Ilco 451?
The Kaba Ilco 451 takes a standard 1-5/32 inch threaded mortise cylinder, so it is a keyed lock by design. For an opening that only needs to be secured from the inside, the Arrow E60 is a Grade 2 exit deadlock with a blank plate by thumbturn function for doors 1-3/8 inch to 1-3/4 inch thick, so there is no cylinder on the outside at all. Order the E60 where nobody needs to key in from the exterior, and the 451 where the door has to be operated by key and hold back for scheduled free entry.
15) We are moving this opening to access control. Is there a mortise lock like the Ilco 451 that releases electrically?
The Kaba Ilco 451 is a mechanical deadlatch operated by key and by its key controlled holdback feature, with no electrical function. For a mortise pocket that is driven by the access control system, the DynaLock 1300 Series is a heavy duty mortise electric deadbolt, and the Codelocks CL2210 is an electronic mortise deadbolt. Both put the securing bolt in a mortise case like the 451 does, but they are thrown and retracted by the control side rather than by a mortise cylinder.
16) Does a Grade 1 cylindrical deadlock like the Corbin Russwin DL3011 do the same job as the Kaba Ilco 451?
They secure a different kind of door. The Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock in a cylinder by blank function for doors 1-3/4 inch to 2-1/4 inch thick, so it mounts through a bored door and is blank on the second side. The Kaba Ilco 451 is a mortise deadlatch for aluminum stile doors with narrow backsets down to 31/32 inch, cycle tested beyond ANSI Grade 1 standards, and it latches automatically on close rather than requiring the bolt to be thrown. On a 1-3/4 inch hollow metal door the DL3011 is the right prep; on a glass storefront stile it is not.
17) The Emtek 2050 is also called a mortise deadbolt with a roller latch. Is it an alternative to the Ilco 451?
Not for a commercial storefront. The Emtek 2050 is a European mortise deadbolt with an integrated roller latch in a square trim style, cylinder x thumbturn, and its companion 2051 is the round trim version. A roller latch holds the door closed by friction and rolls out of the strike under pull. The Kaba Ilco 451 uses a zinc latchbolt measuring 5/8 inch by 1-1/2 inch with a Delrin insert and an auxiliary latch bolt that deadlocks the latch when the door is closed, which is what resists a card or pry attempt on an aluminum stile door.
18) Which deadbolt should I standardize on across a facility if only some doors are aluminum storefront?
Split the standard by door type and keep the keying common. The Kaba Ilco 451 covers the aluminum stile doors, is field reversible left or right hand, accepts a standard 1-5/32 inch threaded mortise cylinder, and cycle tests beyond ANSI Grade 1 standards. For the bored wood and hollow metal doors in the same building, the Falcon D111 is a Grade 1 heavy duty deadbolt with an adjustable backset, and the Hager 3118 is a Grade 1 deadbolt with a Schlage C keyway and 6-pin cylinder for doors 1-3/8 inch to 1-3/4 inch thick. Specifying one keyway across the cylinders lets a single key run both preps.
19) Can I get the Ilco 451 in a finish that holds up outdoors?
The Ilco deadbolt line comes in 7 standard finishes plus 2 Premier Finishes: 32D satin stainless steel and 03P permanent polished bright brass over stainless steel. The Premier pair is the one to specify on a weather exposed entrance or a coastal building, since they're built over stainless to keep the appearance long term. The lock case itself is plated steel for corrosion resistance regardless of finish.
20) Do I need a different strike when I put a mortise deadlatch on the frame?
Match the strike to the bolt the lock throws. The Kaba Ilco 451 throws a 5/8 inch by 1-1/2 inch latchbolt plus an auxiliary bolt, so the frame needs a lip that lets the latch ride in and lets the auxiliary plunger rest on the strike face. The Arrow 460 mortise lock strike is cut for latchbolt and deadbolt functions with a straight lip for 1-3/4 inch doors, which is the pattern used on hollow metal frames rather than on an aluminum jamb. Confirm the jamb material and the existing cutout before ordering strike and lock separately.
How fast can I get the Kaba Ilco 451-F-3RH-628/313 delivered?
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Can I return it if it doesn’t work for me?
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Does the Kaba Ilco 451-F-3RH-628/313 come with a warranty?
Absolutely. The Kaba Ilco 451-F-3RH-628/313 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 Kaba Ilco 451-F-3RH-628/313?
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