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Oversized fastener for NAS5316

Oversized fastener for NAS5316

Oversized fastener for NAS5316

I am looking for an oversized fastener to replace a NAS5316, SCREW, SHEAR, 100° FLUSH HEAD, CLOSE SELF-LOCKING AND NON-LOCKING, NAS1800 SIX LOBE RECESS, 95 KSI FSU.

Any ideas where I could find that?

RE: Oversized fastener for NAS5316

I do not know of such a beast with a countersunk head.
Whatever there is, it's likely to be rare and costly.
Have you searched ASSIST with the appropriate terms?
Only one I know of: the series of bolts from NAS6603 to NAS6620 have a 1/64" oversize. Not applicable but it may help your search.

No one believes the theory except the one who developed it. Everyone believes the experiment except the one who ran it.

RE: Oversized fastener for NAS5316


The NAS 6-lobe recess fastener specs [obviously] do not include over-sizes [X][Y] like many other specs.

However, other than the recess, this is a typical FTH Bolt with long threads, in either CRES or Titanium alloy [95-KSI-Shear, 160-KSI tensile], W/WO a patch locking element.

Possible OS Replacements... my order of preference... may/may-not be readily available [special order]

There are similar-to bolts with corporate part numbers... but I'm sticking with NAS equivalents

A286 CRES replacements
NAS7203-7216... Nom, 1OS [X] and 2OS [Y] [cruciform recess drive]
NAS1790C... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
NAS1580C... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
HT4026C... Nom, 1OS [X] and 2OS [Y] [Dovetail recess drive]

Titanium replacements
NAS7303-7316... Nom, 1OS [X] and 2OS [Y] [cruciform recess drive]
NAS1790V... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
NAS1580V... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
HT4026V... Nom, 1OS [X] and 2OS [Y] [Dovetail recess drive]

Low alloy steel replacements [if applicable]...
NAS7103-7116... Nom, 1OS [X] and 2OS [Y] [cruciform recess drive]
NAS1790... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
NAS1580A... Nom, 1OS [X] and 2OS [Y] [Dovetail or off-set-cruciform recess drive]
HT4026... Nom, 1OS [X] and 2OS [Y] [Dovetail recess drive]

IF FTH, short thread, Bolts are permissible then may consider...
NAS7400-7416 [LA Steel]
NAS7500-7516 [A286]
NAS7600-7616 [Titanium]

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

RE: Oversized fastener for NAS5316

Wow, Thanks Will just what I needed.

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