Where to find NAS bolts
Posted: Tue Mar 08, 2016 3:28 pm
by Gripdana
Does anyone know where I can find NAS6604-16X and NAS6604-16Y bolts? They are both oversize. I have no problem finding them without the “X” and “Y”.
Re: Where to find NAS bolts
Posted: Tue Mar 08, 2016 4:49 pm
by SonexEZ
Have you checked out aircraft spruce I did work with another place in SC but I can’t remember the name
Re: Where to find NAS bolts
Posted: Tue Mar 08, 2016 6:49 pm
by Gripdana
Yes. But no luck from them.
Re: Where to find NAS bolts
Posted: Tue Mar 08, 2016 7:07 pm
by Bryan Cotton
I have bought NAS bolts from these folks before:
http://www.gen-aircraft-hardware.com
I did not research your p/n’s there though.
Re: Where to find NAS bolts
Posted: Tue Mar 08, 2016 7:25 pm
by Gripdana
Thank you Brian. I tried them. No luck there either. It seems the oversized bolts are a hard one for me to find
Re: Where to find NAS bolts (oversize dia)
Posted: Tue Dec 21, 2021 10:55 am
by pfhoeycfi
I’ve seen reference here and elsewhere online to oversize diameter bolts but I have never seen them offered anywhere. I’ve seen part numbers like, for example, NAS6604-21X & Y. I’ve looked at all of the obvious suppliers with no luck. Does anyone have any idea where these can be found?
peter
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 12:25 pm
by GraemeSmith
Could you take a longer bolt and run a die up it to get to the grip length you need? No idea about the “legality” or performance difference of such an idea.
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 2:29 pm
by pfhoeycfi
GraemeSmith wrote:Could you take a longer bolt and run a die up it to get to the grip length you need? No idea about the “legality” or performance difference of such an idea.
Hi Graeme,
I was looking for an oversize diameter bolt. The bolt I was looking for is the 1/4-28 NAS6404-20X, it has a 1.25" grip. The X represents a larger diameter shank (+.0156) and a Y suffix bolt would have an even larger diameter shank (+.0312). I’ve seen them referred to as “repair bolts”. I just found that JetTek has a bunch in stock but they want $150 each… I think I’ll just updrill.
Peter
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 2:54 pm
by racaldwell
Peter,
Maybe metric?? Grade 8. dia, 7 mm would be about 0.025" greater than 1/4" dia. Depends on your application. McMaster-Carr.
Rick Caldwell
Xenos 0057
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 3:39 pm
by Bryan Cotton
GraemeSmith wrote:Could you take a longer bolt and run a die up it to get to the grip length you need? No idea about the “legality” or performance difference of such an idea.
At this point may as well shop at Lowes. The strength between rolled and cut threads is significant.
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 6:44 pm
by GraemeSmith
Bryan Cotton wrote:
GraemeSmith wrote:Could you take a longer bolt and run a die up it to get to the grip length you need? No idea about the “legality” or performance difference of such an idea.
At this point may as well shop at Lowes. The strength between rolled and cut threads is significant.
Oh - I understand. I remember looking at a plane that had been refastened from the Aviation Aisle at Home Depot. The AP didn’t even know where to start during the prebuy… In fact he didn’t and told the prospective buyer to save his money and walk away.
As to the extra length NAS bolt - Not being a “wi$ea$$” - just discussing - if the bolt is actually being used for its shear performance - then the tensile strength MIGHT be less important.
Just spitballing.
Re: Where to find NAS bolts
Posted: Tue Dec 21, 2021 8:14 pm
by Jgibson
One would NEVER run a normal die up an AN bolt, however a bolt can be re-made into a ‘clevis’ pin used in a shear situation as long as the ‘shear’ load isn’t bearing on thread area.
Again: 43:13B should be consulted for ANY question concerning ANY aspect of aircraft repair and/or construction.
Joe
Re: Where to find NAS bolts
Posted: Wed Dec 22, 2021 9:29 am
by Zack
I used Military-Fasteners.com for oversized NAS bolts (NAS6209-64) for the wing spars. I went down the NAS rabbit hole for the landing leg bolts as well (NAS6204-42) so I didn’t have to drill a hole in the firewall. https://www.gen-aircraft-hardware.com/ ← these people were really helpful, just give them a call.