Computing Failure Torque for Helicoil Threads in 6061-T6 Aluminum

B

bills5

Can anyone tell me how to compute the maximum allowable torque for a 4-40 helicoil (.112 nominal length) in 6061-t6 aluminum?

Stijloor

Super Moderator
Re: Computing Failure Torque of 6061-t6 Aluminum Threads

A Quick Bump!

Can someone help?

Thank you very much!!

Mikishots

Trusted Information Resource
Re: Computing Failure Torque of 6061-t6 Aluminum Threads

Can anyone tell me how to compute the maximum allowable torque for a 4-40 helicoil (.112 nominal length) in 6061-t6 aluminum?
Don't know about calculating it, but the website states that the maximum is 48 oz-in for a 4(.112)-40 Heli-coil insert.

Jim Wynne

Can anyone tell me how to compute the maximum allowable torque for a 4-40 helicoil (.112 nominal length) in 6061-t6 aluminum?
Welcome to the Cove.

I don't think there's any way to calculate the value because of the variables involved--thickness of material, the integrity of the existing threads, proper insertion of the Helicoil, etc.

B

bills5

i believe the 48in oz. given is the locking torque that the locking feature of the helicoil exerts on the inserted screw. (you'll notice that this number decreases with the number of insertions due to the fact the locking feature is spring-like and wears.

Mikishots

Trusted Information Resource
i believe the 48in oz. given is the locking torque that the locking feature of the helicoil exerts on the inserted screw. (you'll notice that this number decreases with the number of insertions due to the fact the locking feature is spring-like and wears.
Agreed. I have also noticed that the chart only shows the torques for stainless steel - I missed that important note.

Is computing Hardware part of the IVD CE Marking (Conformité Européene) / CB Scheme 3
P Should Data be Normal before Computing Baselines? Statistical Analysis Tools, Techniques and SPC 4
Computing Cpk with out determining if my data is normal Capability, Accuracy and Stability - Processes, Machines, etc. 7
Cloud Computing Requirements for Design History Files for Software Medical Devices 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 4
S Computing Control Limits in Minitab Statistical Analysis Tools, Techniques and SPC 6
What's procedurally required for "cloud computing"? TS16949 Clause 4.2.4. Records and Data - Quality, Legal and Other Evidence 8
K CE Certification for Secure Computing/Tempest company CE Marking (Conformité Européene) / CB Scheme 3
P Help on p-chart - Computing new control limits and chart suitability Statistical Analysis Tools, Techniques and SPC 4
P Computing six sigma when the USL & LSL are varying Six Sigma 16
R Computing Supplier Quality with multiple UOM Quality Tools, Improvement and Analysis 3
Silicon-based chip that can produce laser beams - Major computing advancement After Work and Weekend Discussion Topics 0
A Overall equipment effectiveness - Computing OEE taking all machines taken together Manufacturing and Related Processes 12
Hacker Hunters - An elite force takes on the dark side of computing After Work and Weekend Discussion Topics 0
Failure modes for Inspection processes ISO 14971 - Medical Device Risk Management 15
Braided Tube Twisted Failure Mode - looking for advice Other Medical Device and Orthopedic Related Topics 2
Subsequent failure can also be a root cause? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 15
Bourdon gauge calibration procedure failure ISO 17025 related Discussions 3
Microbiology count test failure Other Medical Device Related Standards 1
Package integrity Testing failure ISO 13485:2016 - Medical Device Quality Management Systems 7
'Failure rate leading to false-negatives and repeat testing' - MDCG and Common Tech Specs Other Medical Device Regulations World-Wide 0
Sterile Disposable Cardiac Guidewire 3yr Real Time Sterility Failure When Confirming Accelerated Aging / Labeling US Medical Device Regulations 3
How to show the effect of the failure mode on the manufacturing process as a customer of product design process? FMEA and Control Plans 3
EO Production Batch Failure ISO 13485:2016 - Medical Device Quality Management Systems 1
Reliability issue - Frequent component failure of the product Reliability Analysis - Predictions, Testing and Standards 2
5 Why RCA for failure to test Contingency Plan IATF 16949 - Automotive Quality Systems Standard 9
Die casting failure Manufacturing and Related Processes 9
Failure Analysis-Potting Gel and Sealants Manufacturing and Related Processes 1
NCR- Failure of contract review process - NADCAP audit AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 6
Risks of failure to meet intended use ISO 14971 - Medical Device Risk Management 6
Pfmea function requirement and failure mode FMEA and Control Plans 6
Missing 1m visual alarm signal in case of software/display failure, mitigation? ISO 14971 - Medical Device Risk Management 3
Failure rate vs hazard rate vs rate of failure Reliability Analysis - Predictions, Testing and Standards 2
Power Failure or Cold Start Situation in PFMEA FMEA and Control Plans 6
How to measure severity if my product is designed for emergency use and failure would result in death? ISO 14971 - Medical Device Risk Management 9
Corrective action for failure in documents control ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
Root Cause Failure Analysis - Not following Customer packaging Specification Problem Solving, Root Cause Fault and Failure Analysis 9
Exact terms for a plating failure and difference between rejection rate and failure rate Manufacturing and Related Processes 9
Failure to test Class I medical device to IEC 60601-1-11 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
Kaizen Events - Factors Affecting Failure Lean in Manufacturing and Service Industries 13
Failure nets - Same level effects FMEA and Control Plans 0
Failure mode at 0h, vs. 1 year vs. 5 year... FMEA and Control Plans 8
How to properly use Survival Analysis to predict time to machine failure Reliability Analysis - Predictions, Testing and Standards 0
Testing to failure for design verification Reliability Analysis - Predictions, Testing and Standards 11
Informational US FDA – Ethicon Recalls Circular Staplers for Insufficient Firing and Failure to Completely Form Staples Medical Device and FDA Regulations and Standards News 0
Detection Action for Failure Effects - AIAG 4th Edition Layout FMEA and Control Plans 5
NASA Says Oregon Company Metals Fraud Caused \$700 Million Satellite Failure - 2019 World News 16
PCBA Hardware Component different failure types - How to rate detection? FMEA and Control Plans 8
N PFMEA repetitive failure modes in subsecuent stations. FMEA and Control Plans 1
Detection rating for a user (surgeon) related failure mode in DFMEA APQP and PPAP 3