Unit of competency details

MEM20002A - Assemble and test lock mechanisms (Release 1)


Usage recommendation:
Is superseded by and equivalent to MEM20002 - Assemble and test lock mechanismsSupersedes and is equivalent to MEM20002A Assemble and test lock mechanisms 25/Jun/2019

ReleaseRelease date
1 1 (this release) 01/Dec/2005


SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030715 Precision Metalworking  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030715 Precision Metalworking  31/Aug/2006 
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Modification History

Not Applicable

Unit Descriptor

Unit descriptor 

This unit covers manually assembling key mechanisms.

Application of the Unit

Application of the unit 

This unit applies to assembly operations that are essentially manual in nature and require the application of accepted locksmithing principles and practices. Assembly activities typically involve built-to-order work and/or low volume and/or complex assemblies and/or long assembly timeframes.

This unit could apply to assembly of cylinders within a masterkey system and individually keyed cylinders.

Work may involve manual adjustments of locking assemblies to correct clearances and alignments to predetermined standards of quality and safety.

Applications of this unit may also require varying levels of measurement competencies. Where this is the case, Unit MEM12023A (Perform engineering measurements) or Unit MEM12003B (Perform precision mechanical measurement) should also be selected as appropriate.

Band :

Unit Weight :

Licensing/Regulatory Information

Not Applicable


Prerequisite units 

Path 1 


Produce keys

Employability Skills Information

Employability skills 

This unit contains employability skills.

Elements and Performance Criteria Pre-Content

Elements describe the essential outcomes of a unit of competency.

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide.

Elements and Performance Criteria



1. Identify key mechanism features and assembly requirements

1.1. Assembly specifications are identified from instructions and documentation.

1.2. Appropriate authorisations are obtained, signatures checked and order confirmed.

1.3. Appropriate assembly sequence/method is planned in accordance with instructions and manufacturer documentation.

2. Prepare to assemble lock mechanisms

2.1. Lock mechanisms are disassembled, if necessary.

2.2. Components and parts are compiled in accordance with assembly specifications.

2.3. Tools, equipment and materials are selected to suit job requirements.

2.4. Work area is prepared and components are arranged in accordance with organisational procedures and selected assembly technique.

2.5. Defective or faulty parts are identified and processed according to organisational procedures.

3. Assemble lock mechanisms

3.1. Locksmithing techniques and principles are applied appropriate to assembly activity.

3.2. Records/data are maintained or processed in accordance with organisational requirements.

3.3. Component parts are fitted to ensure correct positioning and conformance with specifications.

3.4. Locking mechanism is correctly marked/ tagged/ identified as appropriate in accordance with organisational procedure.

3.5. Components and/or assembly are handled and stored in a manner least likely to cause damage and in accordance with organisational procedure.

4. Identify the combination of an assembled mechanism

4.1. The lock mechanism and construction is correctly identified using appropriate method.

4.2. Lock mechanism is decoded (internal locking components).

5. Check finished products

5.1. Operation of the lock mechanism and key is checked for conformance to specifications.

5.2. Faults in lock mechanism or key operation are identified and rectified.

6. Mark, package and label products

6.1. Products are stamped with correct door and key reference information in accordance with organisational procedures.

6.2. Stamping equipment is selected and used correctly.

6.3. Products are grouped, packaged and labelled for installation in accordance with organisational procedures.

Required Skills and Knowledge


This section describes the skills and knowledge required for this unit.

Required skills 

Look for evidence that confirms skills in:

  • checking components/parts against key schedule/job sheet, assembly list or equivalent instructions
  • planning assembly sequence
  • decoding key mechanisms

Required knowledge 

Look for evidence that confirms knowledge of:

  • types of mechanical locking devices
  • information on handwritten and computer generated pinning charts, key and door schedules, hardware chart, mechanical locking devices, mechanisms and components
  • the importance of obtaining authorisations
  • the difference between levers and key blanks
  • fitting requirements and sequence of assembly
  • tools, equipment and materials for assembling lock mechanisms
  • door and key reference information and stamping methods

Evidence Guide


The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment 

A person who demonstrates competency in this unit must be able to assemble locking devices and produce keys from locks. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit 

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment 

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with assembling locking devices, or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment 

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment 

Range Statement


The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Assembly specifications 

Required components and parts, door handing, timeframe for completion, keying instructions and fitting requirements


Door and key schedules, job sheet, pinning charts, hardware charts, manufacturer documentation

Lock mechanisms 

Pin and disc tumbler cylinders, lever and warded locks

Components and parts 

Wafers, springs, key blanks, plugs, levers, housings, pins, cams and screws, circlips and tails

Tools and equipment 

Jigs, followers, tweezers, screwdrivers, circlip pliers, files, wire wheel


Graphite, Teflon and silicone based lubricants

Reference information 

System member, rank, key issue, dealer identification

Stamping equipment 

Dedicated stamping machine, hand stamps, stamping block

Unit Sector(s)

Unit sector 

Co-requisite units

Co-requisite units 

Competency field

Competency field