Bolt Torque Calculations as per Dennis Moss
Bolt Torque Calculations as per Dennis Moss
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What enrolled engineers say
Feels like the reference you crack open when the arch assumptions start wobbling. The section where Moss walks through torque scatter using the K-factor shift from 0.18 to 0.25 on a flanged joint stuck, especially the oil & gas flange example and how clamp load collapses in prod. I've wired similar checks into CI for mech calcs alongside software PRs, so the math-to-ops bridge landed. mostly good, though I wasn't sold on the brief treatment of lubrication variability; more obs data would help.
No-nonsense framing of the hard math helped keep this moving between meetings. The section on Dennis Moss’s torque–tension relationship where he walks the K-factor sensitivity with friction ranges and shows the oilgas flange example at 60% proof load stuck. It's mostly aligned with how we review fastener calcs before pushing to prod specs, though I wasn't sold on skipping measurement methods; wished there was more on scatter control beyond tables. I've already flagged it in the repo notes for my team—useful for PR reviews when bolts cross safety boundaries.
The scenarios feel pulled from real plants, not classroom math, which kept me engaged between meetings. The advanced framing filled gaps I’ve had since bootcamp, especially how he walks from load cases to torque with all the caveats that show up in prod. Section 4’s worked example on a spiral‑wound gasket with 3/4" studs stuck with me, including the moment he adjusts for nut factor drift after a re-torque. I liked the quick checks against flange ratings and the nod to oilgas realities, even if the spreadsheet flow wasn’t always obvious on first pass. wasn't sold on the brief treatment of thermal cycling; wished there was more on how repeated heat-up changes assumptions over time. Still, I’ve already bookmarked it as a reference when arch reviews wander into bolting details or infra questions sneak in.
Your instructor
Sachin Pol
Design Engineer & Professional Trainer
Founder & Head Design
Is this course for you?
You should take this if
- You work in Oil & Gas Upstream or Automotive
- You're a Mechanical Engineering / Onshore Pipeline Engineering professional
- You have 3+ years of hands-on experience in this field
- You prefer self-paced learning you can revisit
You should skip if
- You're new to this field with no prior experience
- You need a different specialisation outside Mechanical Engineering
- You need live interaction with an instructor
Course details
Course suitable for
Key topics covered
Course content
The course is readily available, allowing learners to start and complete it at their own pace.
- Bolt Torque Calculations57 min
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Industry-aligned courses, expert training, hands-on learning, recognized certifications, and job opportunities-all in a flexible and supportive environment.
What learners say about this course
Fast-paced and uneven by design; the advanced tracks land harder than the beginner ones, and it's clear this assumes you've touched prod and CI before. The CI chapter wiring a GitHub Actions PR to a k8s canary and reading RPS on rollback stuck, though I wasn't sold on the thin obs coverage.
No-nonsense framing of the hard math helped keep this moving between meetings. The section on Dennis Moss’s torque–tension relationship where he walks the K-factor sensitivity with friction ranges and shows the oilgas flange example at 60% proof load stuck. It's mostly aligned with how we review fastener calcs before pushing to prod specs, though I wasn't sold on skipping measurement methods; wished there was more on scatter control beyond tables. I've already flagged it in the repo notes for my team—useful for PR reviews when bolts cross safety boundaries.
The scenarios feel pulled from real plants, not classroom math, which kept me engaged between meetings. The advanced framing filled gaps I’ve had since bootcamp, especially how he walks from load cases to torque with all the caveats that show up in prod. Section 4’s worked example on a spiral‑wound gasket with 3/4" studs stuck with me, including the moment he adjusts for nut factor drift after a re-torque. I liked the quick checks against flange ratings and the nod to oilgas realities, even if the spreadsheet flow wasn’t always obvious on first pass. wasn't sold on the brief treatment of thermal cycling; wished there was more on how repeated heat-up changes assumptions over time. Still, I’ve already bookmarked it as a reference when arch reviews wander into bolting details or infra questions sneak in.
Moves fast and doesn't linger on stuff you already know, which fit my pace between meetings. The worked example on the 3/4" ASTM A193 B7 flange with K=0.18 and a spiral-wound gasket stuck, especially seeing preload swing with lubrication. I've already pulled the calc sheet into our repo, sanity-checked it against a live oilgas job, and referenced it in a PR before prod. Wasn't sold on the brief treatment of scatter vs torque control—I wished for more on tensioning—but it was a good use of PD time.
Oct 2, 2026 
