ASME B18.6.3: machine screw torque values?
ASME B18.6.3: machine screw torque values?
(OP)
Am I correct that ASME B18.6.3 addresses torque for 18-8 stainless-steel machine screws, PPH & PFH (Philips pan head & flat head)?
Where is the best place to buy a copy of just the ASME B18.6.3 spec?
I am guessing that these are suggested maximum installation torques, but I have not been able to verify it:
4-40: 5.2 in-lbs
6-32: 9.6 in-lbs
8-32: 19.8 in-lbs
10-32: 31.7 in-lbs.
Thank you,
Lee
Where is the best place to buy a copy of just the ASME B18.6.3 spec?
I am guessing that these are suggested maximum installation torques, but I have not been able to verify it:
4-40: 5.2 in-lbs
6-32: 9.6 in-lbs
8-32: 19.8 in-lbs
10-32: 31.7 in-lbs.
Thank you,
Lee





RE: ASME B18.6.3: machine screw torque values?
and recessed head machine screws and machine screw
nuts. The appendices provide information about "protrusion," "across-corners," "penetration" and "wobble" gaging for various types of screws (not all apply to all types). There is also appendices on wrench openings, thread dimensions, and the formulas on which dimensional data is based.
As far as where to get just the single standard, I'd try ASME itself.
Patricia Lougheed
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RE: ASME B18.6.3: machine screw torque values?
http://www.mgtd.ca/Screw%20Torque.htm
RE: ASME B18.6.3: machine screw torque values?
Here we have a lot of cases where the screws/bolts aren't going into a nut but a threaded hole in a component. Sometimes with less effective threads than a nut would have.
So you have to be careful when using these charts that they truely reflect your situation.
KENAT,
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