countersunk structural fasteners?
countersunk structural fasteners?
(OP)
[I tried searching and didn't find what I wanted, but if there's another thread I missed that answers this very question, then please by all means send me that way.]
Is there a countersunk equivalent of ASTM A 490 bolts? If there is something with equivalent mechanical properties, would the slip coefficient of the connection be expected to remain the same?
Hg
Is there a countersunk equivalent of ASTM A 490 bolts? If there is something with equivalent mechanical properties, would the slip coefficient of the connection be expected to remain the same?
Hg
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RE: countersunk structural fasteners?
RE: countersunk structural fasteners?
RE: countersunk structural fasteners?
http://www.masterbolt.com/post_bolts.html
The folks at Master Bolt have been very helpful in the past and have run some small and large lots. You might want to give them a call.
If the section is thick enough a full taper on these bolts will not degrade the bolt, strength wise. It is also not very hard to get this type bolt tight.
RE: countersunk structural fasteners?
http://www.unbrako.in/unbrako_standard.htm
RE: countersunk structural fasteners?
Any type of a flush head fastener with a recessed drive in it will fail thru the head and recess at a tensile load lower than the ultimate strength of the threads. You have to reduce your allowables and use more/larger recessed head fasteners than you would the same hex head structural bolts.
In rough terms an A490 is about the same relative strength as a grade 8, but the specific requirements are different, so they are not interchangable.
I would not consider flush head recessed drive fasteners to be structural fasteners (there are exceptions in NAS aerospace parts).
RE: countersunk structural fasteners?
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: countersunk structural fasteners?
RE: countersunk structural fasteners?
RE: countersunk structural fasteners?
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies