Washers for SS fasteners
Washers for SS fasteners
(OP)
I am specing ASTM F593 Group 1 Alloy 304 bolts and ASTM F594 Group 1 Alloy 304 nuts. The nominal diametre is 3/4", and they are being used as anchor bolts for railing in a marine environment.
I cannot find an ASTM citation for standard or plate washers to use with these fasteners. Any ideas?
Thanks for your expertise!
I cannot find an ASTM citation for standard or plate washers to use with these fasteners. Any ideas?
Thanks for your expertise!





RE: Washers for SS fasteners
RE: Washers for SS fasteners
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Washers for SS fasteners
"Galling can also be reduced by using two different stainless steels, of significantly different hardnesses, on the mating surfaces. A Brinell hardness difference of 50HB may overcome galling.
A common belief that the use of grade 316 studs with grade 304 nuts (or vice versa) will avoid galling is a myth (there is no notable difference in galling)."
http://www.assda.asn.au/asp/index.asp?pgid=18732
RE: Washers for SS fasteners
rmw
RE: Washers for SS fasteners
RE: Washers for SS fasteners
You might consider the MS 15795 washer series. I am not aware of any ASTM stainless washer specs, but the above stainless steel washer military specification might be useful.
RE: Washers for SS fasteners
I'm not sure galling will be an issue, as the fastener will not be removed frequently (if ever). I would use a harder stud than nut, if this is an issue -- but I'm trying to find relatively common fasteners for this application.
Regards, RAF
RE: Washers for SS fasteners