100+ Free ALOA CMST Practice Questions

Pass your ALOA Certified Master Safe Technician (CMST) — Top Safe Technician Credential exam on the first try — instant access, no signup required.

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Module-dependent; CMST is earned incrementally at master-level standard Pass Rate

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Question 1

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On a Group 2 combination lock being manipulated, what does a flat area on the manipulation graph most likely indicate?

A contact point revealing the position of a wheel gate

Dial friction from worn spline key

A false gate milled into the drive cam

The relocker has fired

to track

2026 Statistics

Key Facts: ALOA CMST Exam

100

Total Practice Qs

Master-level item bank across all CMST modules

Multi-module

Format

Written + practical components per SAVTA

~15%

Advanced Manipulation Weight

Largest single domain on CMST content outline

~$400-$1,200

2026 Module Fees

SAVTA (verify current schedule)

3-5+ yr

Experience Required

Beyond CPS-level safe tech experience

CPS

Prerequisite

Current Certified Professional Safe Technician required

ALOA CMST is SAVTA's master-level credential requiring completion of multiple advanced modules after earning CPS. Content spans advanced manipulation (~15%), advanced drilling and scope (~11%), electronic safe locks (~10%), vault work (~10%), hard plate and relockers (~8%), combination lock repair (~7%), UL/CEN standards (~6%), GSA containers and FF-L-2740B (~6%), forensic entry (~5%), burglary recovery (~5%), depository/specialty (~5%), business/legal/ethics (~5%), time locks (~4%), and ATM/specialty (~3%). Module fees total ~$400-$1,200; candidates need active SAVTA membership and 3-5+ years of safe-tech experience.

Sample ALOA CMST Practice Questions

Try these sample questions to test your ALOA CMST exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On a Group 2 combination lock being manipulated, what does a flat area on the manipulation graph most likely indicate?

A.A contact point revealing the position of a wheel gate

B.Dial friction from worn spline key

C.A false gate milled into the drive cam

D.The relocker has fired

Explanation: During manipulation, the lever nose rides the drive cam and drops onto a wheel gate as wheels align. A flat (no-change) region on the left-right contact graph marks the range where the lever has dropped into a gate, revealing the wheel's combination position. Those flats are the key data used to solve subsequent wheels.

2When manipulating an S&G 6730, how many wheels are typically present in the wheel pack?

A.Two

B.Three

C.Four

D.Five

Explanation: The S&G 6730 is a 3-wheel Group 2 mechanical combination lock. Three wheels means a standard 3-number combination (e.g., 25-50-75) and roughly 1,000,000 mathematical positions, though manipulation resistance is limited (hence Group 2, not 2M or 1).

3The 'Feather Touch' manipulation method relies primarily on detecting:

A.Acoustic clicks through a stethoscope

B.Minute changes in lever nose drop measured by dial feel

C.Magnetic field disturbances

D.Temperature variation on the dial ring

Explanation: Feather Touch manipulation is a tactile technique in which the technician senses extremely small variations in lever nose drop as the dial is rotated across contact area, detecting the gate through dial resistance rather than graphing. It is typically taught as an intermediate-to-advanced manipulation skill.

4Major Manipulation, as described by Harry Miller, is characterized by:

A.Drilling the change key hole to read wheels visually

B.Systematic amplification of contact point differences across a test cycle

C.Using a borescope through the dial ring

D.Applying pressure to the bolt while turning the dial

Explanation: Major Manipulation (Miller method) is a rigorous, methodical approach that uses the lock's own contact points and amplifies small positional differences across an orderly test cycle. It is the foundational technique taught in CMST-level courses for 3-wheel Group 2 locks.

5When manipulating an S&G 6741, how does the presence of a nylon drive wheel affect technique compared to an all-brass 6730?

A.It makes contact-point flats more pronounced

B.It softens the drop feel and may mute contact area readings

C.It eliminates the need for a graph entirely

D.It doubles the number of possible combinations

Explanation: The 6741 uses a nylon drive wheel that reduces wear and noise but softens tactile feedback compared with the older brass 6730. Technicians must often graph more cycles and rely more on dial feel refinement to extract clean contact-point data.

6An S&G 8077AD is a Group 1R lock. What does the 'R' designation tell you about manipulation resistance?

A.It has reduced resistance compared to Group 2

B.It is radio-controlled

C.It is UL-listed as resistant to both expert manipulation and radiological (X-ray) attack for 20 hours

D.It is a residential-grade lock

Explanation: UL 768 Group 1R means the lock resists expert manipulation for 20 man-hours AND radiological attack (X-ray/gamma inspection). The 8077AD is frequently specified for high-security commercial and government safes where both attack vectors are a concern.

7Which LaGard mechanical lock model is most commonly found on modern commercial gun safes and is readily manipulable by a trained CMST?

A.LaGard 3330

B.LaGard ComboGard Pro

C.LaGard 2200

D.LaGard LKM7000

Explanation: The LaGard 3330 is a Group 2 three-wheel mechanical lock widely used on gun and commercial safes. It is considered manipulable with patience and proper technique. The 3390 is the Group 1 manipulation-resistant version; ComboGard Pro and LKM7000 are electronic.

8On a manipulation graph with plotted left and right contact points, the AMPLITUDE of the curve represents:

A.The number of wheels in the pack

B.The relative position of the gate under the lever nose

C.The wheel diameter in millimeters

D.The age of the lock

Explanation: Left and right contact readings are plotted against test-wheel position. The amplitude (height) between left and right shows how far the lever nose can travel, which varies as gates pass beneath it. The flats (minimums/maximums) reveal gate position for that wheel.

9A 4-wheel mechanical combination lock is considerably harder to manipulate than a 3-wheel lock primarily because:

A.It has a hardplate

B.The fourth wheel exponentially increases required test cycles and masks contact points

C.Four wheels always use different numbers

D.Manipulation tools cannot reach four wheels

Explanation: Each added wheel multiplies the number of test combinations by ~100 and masks the contact-point signature of earlier wheels. A 4-wheel pack can take days instead of hours to manipulate, even for a skilled technician. Most Group 1 listed locks achieve their rating partly via 4 wheels.

10A 'drop-in' indicator during manipulation is BEST described as:

A.The relocker firing unexpectedly

B.A tactile/graph event showing the lever nose has fallen into a true gate

C.The dial ring loosening

D.An electronic chirp from the lock

Explanation: When manipulating, a 'drop-in' is the sensation (and graph signature) of the lever nose falling deeper than the normal contact area, indicating alignment with a wheel gate. Confirming a drop-in lets the technician lock that wheel's position into the solution.

About the ALOA CMST Exam

The ALOA Certified Master Safe Technician (CMST) is SAVTA's top safe-technician credential, recognizing mastery of advanced combination lock manipulation, drilling and scope work, high-security electronic locks, vault doors, hard plate and relocker defeat, UL/CEN rating standards, GSA-approved containers, forensic safe entry, burglary recovery, and specialty applications (depositories, ATMs, time locks). Candidates must already hold the Certified Professional Safe Technician (CPS), demonstrate 3-5+ years of documented field experience, and pass multiple advanced modules covering both written knowledge and hands-on performance. Typical reference equipment includes S&G 6730/6741/8077AD, LaGard 3330, Kaba Mas X-09/X-10, AuditCon, Cencon, and major vault platforms (Diebold, Mosler, Hamilton). Earning CMST signals to banks, government contractors, and insurers that the technician can service, penetrate, and repair the full range of UL 687 TL/TRTL/TXTL safes and GSA Class 5/6/7 containers.

Questions

100 scored questions

Time Limit

Multi-module written + practical components over several days (module-dependent)

Passing Score

Module pass standards set by SAVTA certification committee (typically 70-75% per module)

Exam Fee

~$400-$1,200 combined across CMST modules (SAVTA 2026 — verify current schedule) (Associated Locksmiths of America (ALOA) — Safe & Vault Technicians Association (SAVTA) division)

ALOA CMST Exam Content Outline

~15%

Advanced Combination Lock Manipulation

Master-level manipulation of Group 2 and Group 1 mechanical locks — Sargent & Greenleaf 6730, 6741, 8077AD; LaGard 3330, 3332, 3390; Mas-Hamilton; Diebold. Graphing (Major Manipulation by Gene Roberts, Feather Touch by Lou Gerard), wheel pack isolation, contact-area identification, reading the drop-in, amplification, three- and four-wheel pack procedures, false gates, serrated wheels.

~11%

Advanced Drilling & Scope Work

Drill-point selection from MBA USA, NSO, and Lockmasters charts; borescope/otoscope/fiberoscope use; reading wheels through the scope; change-key hole vs fence-area drilling; carbide and diamond bit selection; cutting fluids; drill rigs (Falle, Strong Arm); avoiding glass relockers; post-entry repair; lead-lined and composite barrier materials.

~10%

Advanced Electronic Safe Locks

S&G 2740B, 2890B, Z03/Z02; LaGard Basic, ComboGard Pro 39E; Kaba Mas AuditCon, Cencon, X-09/X-10 FF-L-2740B locks; SecuRam. Bypass diagnostics, solenoid vs motor-driven bolt work, EMP/spike recovery, firmware and audit trails, one-time codes (OTC), Dallas key and smart key systems, MBA Auto-Zap, battery management, lockout recovery.

~10%

Vault Door & Modular Vault Work

Diebold, Mosler, Hamilton, International Vault, FireKing vault doors and modular vaults. Day-gate service, boltwork and emergency release, time locks and time-delay, ventilators, hinge and live/dead bolt adjustment, UL 608 Class M/TL/TRTL vault classifications, vault lighting and emergency exit hardware.

~8%

Hard Plate & Relockers

Hard plate compositions (manganese, carbide, glass, copper-lined), glass relockers (tempered float glass), thermal relockers, cable relockers, spring-loaded auxiliary relockers, punch-resistant plates. Detection during drilling, avoidance, resetting or replacing after entry, repair sequencing, manufacturer-specific layouts (S&G, LaGard, AMSEC).

~7%

Combination Lock Repair & Change Keys

Disassembly and repair of mechanical combination locks, wheel pack replacement, spline/change-key procedure, drive cam and fly adjustment, dial and ring replacement, nose and spindle replacement, lost-combination recovery via manipulation or drilling, reinstalling after forensic entry, right/left handing conversion.

~6%

UL / CEN Safe Ratings & Standards

UL 687 TL-15, TL-30, TL-30x6, TRTL-30x6, TRTL-60x6, TXTL-60x6; UL 768 Group 1/1R/2/2M combination-lock ratings; UL 72 Class 350 fire 1-hour/2-hour; CEN EN 1143-1 burglary-resistance Grade 0-XIII; RSC residential security containers. Attack-time definitions, approved tools, rating implications for insurance and specification.

~6%

Government / GSA-Approved Containers

Federal Specification FF-L-2740B high-security locks (Kaba Mas X-09, X-10), AA-F-358 GSA Class 5/6 filing cabinets, AA-F-363 map cabinets, AA-V-2737 GSA-approved vault doors. GSA Class 5/6/7 containers, labeling, compromise and repair under federal standards, neutralization, requalification.

~5%

Forensic Safe Entry

Non-destructive and minimally destructive entry preserving evidence — photography, chain of custody, reading forced-entry signatures, distinguishing manipulation vs drilling vs torch vs explosive attack, expert-witness fundamentals, post-entry repair to restore original UL/CEN rating where feasible.

~5%

Burglary Attack Recovery

Assessment of burglarized safes — peel, rip, punch, torch/oxy-fuel cuts, core drilling, back-door attacks. Salvage vs replace decisions, boltwork re-alignment, relocker reset, door and body repair welding, structural-integrity assessment, insurance documentation.

~5%

Depository & Specialty Safes

Depository safes (rotary hopper, drop slot, anti-fishing baffles), cash-management and smart safes (Tidel, FireKing, Brinks, Loomis CompuSafe), under-counter, gun, jewelry TRTL, pharmacy controlled-substance safes (DEA), hotel safes.

~5%

Business, Legal & Ethics

Business practices and invoicing, customer positive ID and proof of ownership, lien laws, insurance and bonding, OSHA workplace safety (silica dust, respirators, PPE), SAVTA code of ethics, combination and customer-data confidentiality.

~4%

Time Locks & Time-Delay

Mechanical time locks (S&G 6120, 6123; LaGard) — winding, synchronization, lockout recovery; time-delay units and dual-control modes on electronic locks; holiday and bypass programming; bank vault time-lock protocols and retail delayed-access compliance.

~3%

ATM & Specialty Applications

ATM safe service (Diebold, NCR, Triton, Hyosung), UL 291 Business Hours/Level 1, retrofitting electronic locks, remote monitoring, skimming and physical-attack hardening, modular ATM chest entry and re-provisioning.

How to Pass the ALOA CMST Exam

What You Need to Know

Passing score: Module pass standards set by SAVTA certification committee (typically 70-75% per module)
Exam length: 100 questions
Time limit: Multi-module written + practical components over several days (module-dependent)
Exam fee: ~$400-$1,200 combined across CMST modules (SAVTA 2026 — verify current schedule)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

ALOA CMST Study Tips from Top Performers

1For S&G 6730/6741 manipulation, always start by identifying the contact area cleanly — park at the contact points, count wheels with try-out combinations, and graph the left and right contact points in 2.5-dial-number increments. The Major Manipulation method (Gene Roberts) emphasizes graphing both contact points together so you can isolate the gate wheel by looking at which pair of points diverges; Feather Touch (Lou Gerard) focuses on amplification and lock feel. Practice 30-60 minutes daily on a live practice lock.

2Drill-point selection: use MBA USA, NSO, or Lockmasters charts for the exact safe make/model — never guess. For most TL-rated safes, typical drill points target the change-key hole, the fence/lever area, or directly over the wheel pack. Carbide bits at 300-500 RPM with cutting fluid; switch to diamond for ceramic/composite barriers. Always assume a glass relocker is present in TL-30 and higher — angle your approach to avoid the relocker plate and have a borescope ready.

3Kaba Mas X-09/X-10 under FF-L-2740B: these are self-powered (piezoelectric generator) electromechanical locks used on GSA Class 5/6 containers and vault doors. No batteries to replace. Dialing is via LCD display with rotating knob — the combination sequence and timing are strict. Lockout recovery on GSA containers follows strict SF-700 combination records and agency-specific procedures — never drill without authorization. X-10 adds audit capability and meets updated FF-L-2740B requirements.

4UL 687 safe ratings cheat: TL-15 resists 15 minutes of common mechanical and electrical tools on the door; TL-30 is 30 minutes; the 'x6' suffix (TL-30x6, TRTL-30x6) means all six sides are rated. 'TR' adds torch resistance, 'TX' adds explosives. UL 768 locks: Group 2 (commercial, manipulation-resistant by unspecified standard), Group 2M (20 hours manipulation resistance), Group 1 (20 hr manipulation + radiological), Group 1R (Group 1 + radiological resistance). CEN EN 1143-1 runs Grade 0 through Grade XIII with resistance-unit scores.

5Forensic safe entry fundamentals: photograph the safe BEFORE touching it from four quadrants plus any pre-existing damage; document the serial number and dial position. Establish chain of custody in writing if law enforcement is involved. Choose the least destructive successful method (manipulation > scoping > minimal drilling > destructive entry). After entry, photograph the interior, document all contents, and restore the safe's security rating with factory-equivalent parts — note any rating that can no longer be recertified.

Frequently Asked Questions

What is the ALOA CMST?

The ALOA Certified Master Safe Technician (CMST) is the top safe-technician credential awarded by the Safe & Vault Technicians Association (SAVTA), a division of ALOA. It recognizes mastery of advanced combination manipulation, drilling and scope work, high-security electronic locks, vault doors, hard plate and relockers, GSA-approved containers, forensic entry, and burglary recovery — in effect certifying a technician as a peer-reviewed expert capable of servicing the full range of UL 687 and CEN EN 1143-1 safes.

Who is eligible to pursue CMST?

Candidates must already hold the Certified Professional Safe Technician (CPS) credential, maintain active SAVTA membership in good standing, document 3-5+ years of full-time safe-technician experience including real manipulation openings, and complete required advanced coursework. A criminal background check and adherence to the SAVTA/ALOA Code of Ethics are required. References from established CMSTs are commonly requested.

What is the CMST format?

CMST is not a single exam — it is a collection of advanced modules that candidates complete incrementally, typically at the SAFETECH annual convention or at sanctioned SAVTA regional test sites. Modules combine written knowledge assessments (approximately 100 master-level items in total across the program) with hands-on practical/performance components covering manipulation, drilling, electronic bypass, and forensic entry.

How much does CMST cost in 2026?

Combined module fees for CMST typically total approximately $400-$1,200 depending on which modules a candidate still needs to complete, plus required SAVTA membership dues, SAFETECH convention tuition for prerequisite classes, and travel. Verify the current 2026 schedule on the SAVTA website. Failed modules incur a per-module retake fee.

Where and when is CMST administered?

Most CMST modules are offered each year at the SAFETECH convention (typically spring) and at periodic regional SAVTA test events hosted by approved proctors. Candidates select which modules to take based on their remaining requirements. Exact 2026 dates and locations are published on the SAVTA education calendar.

How are CMST modules scored?

Each module has an independent pass standard set by the SAVTA certification committee, typically 70-75% for written components, with practical components judged against defined performance criteria by SAVTA-appointed examiners. Candidates receive module-level pass/fail results; CMST is awarded once all required modules have been passed.

What are the highest-yield topics?

Highest-yield areas include S&G 6730/6741/8077 and LaGard 3330 manipulation with proper graphing (Major Manipulation, Feather Touch), drill-point selection and borescope reading, hard plate and glass/cable relocker avoidance, Kaba Mas X-09/X-10 FF-L-2740B and AuditCon/Cencon electronic locks, UL 687 TL/TRTL/TXTL and UL 768 Group 1/2 rating distinctions, CEN EN 1143-1 grades, GSA Class 5/6 container procedures, and forensic documentation preserving chain of custody.

How should I study for CMST?

Pair classroom instruction (SAVTA SAFETECH classes, MBA USA and Lockmasters courses) with daily bench work on live locks and practice safes. Build a personal reference library: Major Manipulation (Gene Roberts), Feather Touch (Lou Gerard), The National Locksmith Guide to Manipulation, MBA drill-point charts, and manufacturer service manuals for S&G, LaGard, Kaba Mas, Diebold, and Mosler. Shadow a current CMST mentor, log manipulation openings, and complete timed module mock tests before sitting each module.