Virtual Learning


Threaded Assemblies: Essential Design Rules

Understanding and applying threaded connections design rules


Upon completion of the training course, attendees will be able to:

  • Use appropriate practical rules to design threaded connections
  • Design or improve threaded connections according to industry standards (NF E 25-030, etc.).


10th – 14th October 2022 (Mon-Fri)


14:30 – 18:00 (GMT+8) Singapore / 08:30 – 12:00 (GMT+1) Paris


Knowledge in mechanical design

Educational Approach

Technical presentations including theory, exercises, demonstrations, practical examples; punctuated with discussion and questioning from attendees.

Who should attend:

Engineers and design office and process planning technicians

Course outline:

Standards and characteristics of fasteners
  • Morphology of screws and threaded studs
  • Threads dimensions
  • Mechanical properties of screws and threaded studs
  • Stainless steel fasteners
  • Nuts and threaded parts
  • Designation of fasteners

Dynamic properties of fasteners

  • Endurance limit of standardized fasteners

Analysis of an assembly

  • Assembly modelling
  • Analytical model and behavior
  • Flexibility of assembly components
  • Assembly behavior
  • Complex assembly, pre-load, external loads and off-center loading
  • Functional pre-load

Torque tightening of threaded assemblies

  • Introduction to torque tightening and Torque Tension relationship
  • Friction coefficient characterization
  • Notions of torque dispersion and tightening domain
  • Process dispersion and tightening strategy
  • Tightening stress

Assembly design

  • Topic summary and standardization
  • Simplified procedure for common assembly
  • Complete procedure for structural assembly

Practical design rules

  • Design of fastened parts
  • Design of assembly function, corrosion and untightening


This course will be conducted by Mr. Zouhair CHAIB, a trainer on bolted assembly.

Mr. Zouhair CHAIB

  • Development of practices rules to design and to optimize bolted assemblies
  • Expertise and analysis of failed connections
  • R&D project treating of bolted connections
  • Training activities

Areas of Expertise

  • Design and optimization of bolted connections
  • Analytical, FEA and experimental analysis of bolted joint
  • Diagnostic and analysis of failed joints
  • R&D and Training activities
  • Software development


CETIM, 2007 to 2013, and from July 2017: Technical referent in bolted joint

Nord-Lock, 2013 – 2017: Senior Technical expert in bolted joint

Labinal Snecma Group, 2001-2002: Calculation Engineer

INSA Toulouse, 2003-2007: Doctor Grade

ENIT Tunisie, to 2001: Mechanical Engineer


Course Name

K72: Threaded Assemblies: Essential Design Rules

Course Date:

10th – 14th October 2022 (Mon-Fri)


14:30 – 18:00 (GMT+8) Singapore / 08:30 – 12:00 (GMT+1) Paris

Each day 3.5 hours for 5 days, total 17.5 hours

Closing Date:

27th September 2022, Tuesday.

Registrations will be confirmed in writing and is subject to availability

Course Fee:

SGD 1,7500.00 OR EUR 1,060.00 OR USD 1,300.00 per person (exclude GST)

Early Bird:

Registration must reach us on or before 13th September 2022, Tuesday:
SGD 1,575.00  OR EUR 960.00 OR USD 1,170.00 per person (exclude GST)

We welcome groups to attend our trainings. Please contact us for a group discount package.

Our Accounts will advise if GST is applicable. Participants shall bear all bank charges.
Learners must fulfill at least 75% attendance and pass all assessment components, to be awarded with a Certificate of Attendance (COA).

For clarification or inquiries please contact Ms. Pei Shyan NG or Joshua Lee at +65 67788285 or send an email to

Registration Form

To register for the course, please complete this form.

Payment Details:

  • Registration form and course fees are to reach MATCOR before the closing date.
  • Registration will only be confirmed upon full payment.
  • Direct internet banking payment to MATCOR Technology & Services Pte Ltd, Bank: Development Bank of Singapore, Bank Code: 7171, Branch Code: 032, Swift Code: DBSSSGSG, Bank Address: 1 Kim Seng Promenade, #02-32, Great World City, Singapore 237994, Account / Iban No: 032-004152-3. / PAYNOW: UEN199201190R
  • All cheques should be made payable to “MATCOR Technology & Services Pte Ltd” and mailed to 3 Seletar Aerospace Link Singapore 797550, Or
  • Overseas participants may choose to pay in EUR or USD.
  • Participants shall bear all bank charges for payments.

For clarification or inquiries please contact Ms. Pei Shyan NG or Joshua Lee at +65 67788285 or send an email to

Cancellation & Refund:

  • Any cancellation made after closing date – no refund, but delegate substitution is allowed.
  • Any cancellation made before closing date will receive full refund.
  • MATCOR reserves the right to cancel or reschedule the course, only if deemed necessary