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Interchangeable Core
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Interchangeable Core Advantages
Interchangeable core (I/C) offers maximum flexibility to the building owner. Whenever a key is lost or stolen, locks can be rekeyed quickly by non-locksmith personnel. All it takes is the special CONTROL key. This key is used to remove and install all cores in the system. Just go to the door, remove the old core and install the new one with the control key. Security is regained in seconds!

Falcon’s interchangeable cores and I/C locksets are compatible with other small format interchangeable core (SFIC) products, such as Best and Arrow. Use our locks with their cores and viceversa. In most cases Falcon can even furnish cores master keyed into your existing Best or Arrow key system. Just include a copy of your existing bitting list with the order.
Construction Cores
Interchangeable core jobs requiring construction keying are furnished with temporary cores which are keyed alike to a combination unrelated to the permanent system’s master key.

When the building is turned over to the owner, the permanent cores are installed and the construction cores are returned to Falcon Lock for credit.

Orders must include the name and address of the person to whom the construction keys and permanent master and change keys should be sent.

Interchangeable Core Keyways
The ”A” keyway is standard for I/C products and will be supplied unless otherwise specified. Falcon keyways shown here are equivalent to Best and Arrow I/C keyways of the same names.

Consult factory for restricted keyways not listed here.

When ordering locks or cores master keyed into existing Best, Arrow or other compatible I/C systems, a copy of the bitting I list for the existing system is required with the order.
 
A2, A3 and A4 Systems
Falcon master keying uses the A2 System (depths 0 - 9) standard. We can provide cores into competitors’ A4 (depths 0 - 5) key systems but we generate new A4 systems solely at the discretion of our Key Systems Department. We do not support the A3 System (Depths 0 - 6). However, any Falcon core can be combinated to A3 specs in the field.
 
Cores
Description: Uncombinated cores are supplied without pins, springs or keys. May be keyed into A2, A3 and A4 Systems in the field. Combinated cores are keyed and ready to install. They are furnished with two change keys each. A2 System standard, A4 special.
Packaging: Uncombinated cores are packed 20 per box.
Finishes: Standard: 606 and 626.
Special Order: 605, 612, 613 and 625. Consult factory.
Logo: Standard: Cores and keys are supplied with the Falcon logo.
Optional: Combinated cores ordered without logo are furnished with plain (non-embossed) keys.

Interchangeable Core
Available with Falcon style spring cover or Best® style individual pin chamber caps.
 
Regular Core (suffix keyway to number)
Uncombinated
Combinated
6-Pin
7-Pin
6-Pin
7-Pin
Standard
C646
C647
C606
C607
Best® style capping
CB846
CB847
CB806
CB807
No logo C648 C649 C608
C609
No logo, Best® capping
CB848 CB849 CB808 CB809
 
Interchangeable Core Combinating Aids
For more assistance on A2 systems, Falcon offers tools to aid you.
FA-GN-1022 “How to Key Falcon Interchangeable Core” Guide.
FA-GN-1023 Worksheet/ Pinning Chart for Falcon Interchangeable Core.
FA-GN-1026 Falcon Sliding Pinning Chart or A2 Systems.
Contact your local IR representative for any of these useful tools.
Key Blanks (suffix key section)
Description
Standard
Plain Both Sides
Standard
KB628
KB718
Best Style
KB800
KB801
Stamped CONTROL
KB608
KB744
M Series EMERGENCY
KB737
KB748
Best Style M Series EMERGENCY KB804
KB805
Blade for 2” access bow
KB633
 n/a
Plastic access bow only
001911-001-70
n/a
 
Cut Key (suffix keyway)
Description
Standard
Plain Both Sides
6-Pin
7-Pin
6-Pin
7-Pin
Standard 
KB632-1 KB632-2 KB673-1 KB673-2
Best Style 
KB807-1 KB807-2 KB809-1
KB809-2
CONTROL 
KB609-1
KB609-2 KB778-1 KB778-2
Best Style CONTROL
KB811-1
KB811-2 KB813-1 KB813-2
M Series EMERGENCY
KB738-1 KB738-2 KB779-1 KB779-2
Best Style M Series EMERGENCY
KB814-1  KB814-2
KB817-1
KB817-2
2” access bow
KB916
KB916-1
n/a
n/a
Cylindrical Lock Tailpieces
B, RU, T and X Series
Ref.
Length 
Part number
Application
1.40” 
022175-000-30
X Series, except X571
2
1.53”
030739-003-30
RU, T381 inside only, 7-pin, B611
3
1.69”
030739-002-30
RU, T381 inside only, 6-pin, B611
4
2.22” 030739-005-30
RU, T571 7-pin
5
2.37” 030739-004-30 RU, T571 6-pin
6 2.41” 030739-001-30 RU, T Series 7-pin except T381 inside and T571
7
2.56” 030739-000-30 RU, T Series 6-pin except T381 inside and T571
8
1.32” 031731-000-30
B  Series 6 and 7-pin, except B611
9
1.66”
022175-002-30
X571 7-pin, B611 7-pin
10
1.81”
022175-001-30 X571 6-pin
 
Y Series: Q001-055
 
Accessories
Key Bitting Punch
1208 A2 System

Key Gauge
012612-000-60 A2 System
030425-000-60 A4 System

Depth Bars for Key Machine
031033-000-30 A3 System
031034-000-30 A4 System

Miscellaneous I/C Parts
A12663-001-00 Drive pins, package of ten (10)
A12664-010-00 Drive washer, package of ten (10)

Kit Refills: Pins, Springs, etc.
(100-pack except where noted)
A12635-0xx-00 A2 top pins, sizes 2 thru 19: replace “xx” with size
A12636-00x-00 A2 bottom pins, sizes 0 thru 9: replace “x” with size
A30375-0xx-00 A4 top pins, sizes 1 thru 11: replace “xx” with size
A30376-00x-00 A4 bottom pins, sizes 0 thru 5: replace “x” with size
A12637-000-00 Tumbler Spring
A12637-500-00 Tumbler Spring, 500-pack
A12638-000-00 21C Caps for Best® style cores, 500-pack
A12639-001-00 Spring cover, 6-Pin
A12639-002-00 Spring cover, 7-Pin

Stamping Fixture
1398 Holds one key and one core for face or side marking

Pin Kit
1404 A2 System, Falcon spring cover cores (standard)
1391 A2 System, Best® style capping
1403 A4 System, Falcon spring cover cores
1390 A4 System, Best® style capping

Capping Pin and Ejector Pin
1392 Capping pin, Best® style
1405 Ejector toola

Capping Blocks
1411 Set, Falcon spring cover cores
1414 Block only, Falcon spring cover cores
1415 Tapping plate - new style (dovetail)
1393 Capping block, Best® style capping

Mortise Accessories
Mortise Cam Changing Tools
1400 Tool set with staking punch
1401 Tool only
1402 Cam staking punch only

Mortise Cylinder Wrench
1407 Verifies cam operation and preserves cylinder finish during installation