Section 3 - 20
Key Cutting & Pinning
Comparing A4 Pin Stacks
The examples on this page show pinning for key
symbol 1AA.
When pinning conventional cylinders, ignore the
control bitting. If a top pin of 12 or greater is need-
ed, use two pins of equal length to bring the pin
stack to the required height. When an odd num-
bered top pin is required, such as 15, use two pins
that are close in size–8 and 7 instead of 11 and 4.
For the patent pin chamber in all conventional
cylinders, insert the proper bottom and top patent
pins, then insert a number 4F top pin.
Pinning for all Peaks products can now be accom-
plished with only one spring. That stainless steel
spring is number 3800-00-4010.
Note: Peaks Preferred Patent Pins for illustration
only. (See key pinning section 3 - 4 to 3 - 12)
top 6710 7 10 6
buildup 67-7-6
master 111- 5 -
bottom 204103
top 6710 7 10 6
buildup 67-7-6
master 111- 5 -
bottom 204103
top 846957
control 4 10 4555
master 111- 5 -
bottom 204103
top 846957
control 4 10 4555
master 111- 5 -
bottom 204103
4F
8
400-xx-1206
3400-xx-1206
Key-in-Knob
8400-xx-1299
3400-xx-1299
“99” and “95” Key-in-Knob
8144-xx-1206
6140-xx-1206
Corbin Russwin
8244-xx-1206 Yale
6240-xx-1206 Yale
6340-xx-1206 Medeco
Stack height 15
Stack height 18
Stack height 14
4F
top 735846
control 4 10 4555
master 111- 5 -
bottom 204103
8800/8900
3800/6800
Small Format
Interchangeable Core
control CTR 153042
master AA 204153
change 1AA 315103
A4 Keying is not available for the 8444 series cylinders
top 786867
buildup 897978
master 111- 5 -
bottom 204103
8401-xx-1210
3401-xx-1210
Rim/Mortise
4F
Calculating Other A4 Pinning Stacks
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