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Keys and Key Systems

Keys and Key Systems. David M. Koenig, CPP. Today’s Topics. Common Keys Key System Components Master Keying High Security Key Systems. Common Keys. Schlage Key Blanks (Most Common in our area). Common Keys. Other Key Blanks (Residential).

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Keys and Key Systems

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  1. Keys and Key Systems David M. Koenig, CPP

  2. Today’s Topics • Common Keys • Key System Components • Master Keying • High Security Key Systems

  3. Common Keys • Schlage Key Blanks (Most Common in our area)

  4. Common Keys • Other Key Blanks (Residential) Kwikset Weiser Yale

  5. Common Keys • Other Key Blanks (Commercial) Best Sargent

  6. Lots of Different Key Blanks

  7. Sectional Keyways • Sectional Keyways - Variety Of Key Blank Groove Sizes And Shapes • Hierarchal Groups • Higher Level Patterns Fit Into Multiple Keyways • Allows Cut Numbers To Be Repeated

  8. Sectional Keyways

  9. Key System Components • Key Blank • Pins • Springs • Cores • Cylinders • Tailpiece

  10. Key System Components • Tailpiece (Cams) Connects to rear of cylinder, operating rest of lockset

  11. Key System Components • Cores And Cylinders Cylindrical Mortise / Rim Interchangeable (Bored) (In) / (On)

  12. Key System Components • Pin Kit • * Top Pins • * Bottom Pins • * Springs

  13. Key System Components • Key Machine (Duplicator / Code)

  14. Original Keys Key code stamped on key With this number can duplicate key !!

  15. Keys Matched to Pins • Key Cuts Fit Pin Lengths

  16. Master Keying Is... • System Of Organizing Numbers • For Cutting Keys • For Pinning Cores (Locks) • Grouping Of Locks And Keys • Set Of Locks That Are Operated By More Than One Key

  17. Master Keying Provides • Convenience Over Security • Separate Keys For Individual Locks • Keys To Operate Groups Of Locks • Single Key For All Locks In System • Ability To Carry Fewer Keys • Organization Of And Management Of Lock & Key System

  18. Master Keying Disadvantages • Makes Locks Easier To Pick • Small Master Pins Increase Service Issues • Higher Re-keying Cost If GMK Or GGMK Keys Are Lost • Cross Keying potential • Controlled Destruction of Lock Security

  19. Keying Terms • KA - Keyed Alike - Several Locks Operated By The Same Key • KD - Keyed Different - Each Lock Operated By It’s Own Key

  20. Master Keying Terms • CK – Change Key Work Individual Lock • MK - Master Key • Work Single Group of Locks • GMK - Grand Master Key • Work Large Group Of Locks • GGMK - Great Grand Master Key • Fits All Locks In System

  21. Master Key System

  22. Master Keying Terms • SKD - Single Keyed Different • Lock Set To Change Key Only • Common Keying (Maison keying) • Levels - Number Of Different Types Of Keys In System • Example CK-MK = 2 Level System • Example CK-MK-GMK = 3 Level System

  23. System Size and Security • 5 Or 6 Pin Chambers (more is better) • Chamber Depths • Pinning Increment (Key / Pin Wear) • How Many Chambers Are Progressed • Angles (Or Other Factor) Employed

  24. Master Keying Technical • MACS (Maximum Adjacent Cuts) Loss • How Many Masters Employed • Number Of Chambers Used For Master Keys Reduces Maximum And Determines Availability Within a MK

  25. Typical System Example • 8 Depths (1-10 Less One for MK) • Less Increments of Two • Used In 6 Chambers Equals… • 4 To 6th Power Equals… • 4,096 Theoretical Combinations • Less MACS Of 20% • Equals 3,276 Maximum Combinations

  26. Medeco Biaxial System Size • 4 Depths (1-5 Less One Number For GMK) • Used In 6 Chambers Equals… • 4 To 6th Power Equals… • 4,096 Theoretical • Times 9 Sections (Angles) Equals...

  27. Medeco Biaxial System Size • Equals 36,864 Changes Under Single MK • With MACS Loss Of 20% Combinations (Maximum Adjacent Cuts) • Over 29,400 Maximum Combinations

  28. High Security Key Systems • Typical Manufacturers * Medeco * Primus * Assa * Keso * Multi-Lock

  29. High Security Key Systems • What Creates High Security * Restricted Key Blanks - Patent Protection * Contractual Requirements - Key Record Control - Key Machine

  30. High Security Key Systems • What Creates High Security * Physical Characteristics - Angles, Side bars, etc. - Hardened Components

  31. High Security Key Systems • What Does High Security Provide * Key Control * Pick Resistance * Drill Resistance * Bump Resistance

  32. The End Thank You !

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