Fastener torque table needed
Fastener torque table needed
(OP)
Hi,
I am looking for torque tables for stainless steel, aluminum and nylon fastener- inch and metric.
Any Idea where it can be obtained?
Thank you,
Boris.
I am looking for torque tables for stainless steel, aluminum and nylon fastener- inch and metric.
Any Idea where it can be obtained?
Thank you,
Boris.





RE: Fastener torque table needed
What you really need is the coefficient of friction, which is difficult to estimate even with "normal" steel fasteners. All of the table you see on the net are based on assumed coefficients of friction. If this is a critical application your only choice it to measure this on a per case basis.
ISZ
RE: Fastener torque table needed
FAQ725-215: Where can I find info on fasteners on the Internet?
FAQ725-600: What are good fastener references?
RE: Fastener torque table needed
RE: Fastener torque table needed
Thank you,
Boris.
RE: Fastener torque table needed
Torque values change depending on many, many factors like.
But
http://lmgtfy.com/?q=bolt+torque+chart
RE: Fastener torque table needed
I used a spreadsheet to build a screw torque table.
Build a spreadsheet. Add all your screw sizes. You can find charts that show the stress areas. If you have Bickford and Nassar's Handbook of Bolts and Bolted Joints you will find formulae for stress area that accounts for the possibility of UNJ and MJ series screws.
On the spreadsheet, list all the assumptions you made. What is the yield or proof stress of your screw material? This is not a simple question for stainless steel. How is your joint lubricated? Are your screws tapped deep enough that they will fail in tension? What percentage of proof stress are you using to calculate force?
Quite a few years ago, I ordered a torque wrench that came with a manual which included torques for cap screws. I worked everything out, and I determined that the torques were for unlubricated joints at 90% of proof stress.
RE: Fastener torque table needed
If it is not proprietary, can I get a copy of your spreadsheet? As I mensioned before, it is for manufacturing instruction, and general numbers will be OK.
Thank you in advance.
Boris.
RE: Fastener torque table needed
http://www.cditorquecanada.com/torque_specs.html
http://www.precisionscrewandbolt.com/torque.htm
http://www.engineersedge.com/torque_table_sae.htm
http://www.cncexpo.com/MetricBoltTorque.aspx
Ted
RE: Fastener torque table needed
Thank you very much.
Boris.
RE: Fastener torque table needed
I am afraid the spreadsheet is proprietary.
There is no such thing as a general number.