S2 Trunk Hinge nut size

[Ianashdown]

Can anyone tell me the correct size for the nuts that hold the trunk lid to the hinge on an S2? The part book shows LUCN040F which I think would 1/4 -28 but from memory they didn’t seem that large, I remember #10-28 . .

Thank you,

Ian

[types26/36]

Ian, my S2 has ¼ unc nuts and is listed the same in the Lotus fastener list.

[Elan45]

Pretty sure my pre-airflow coupe, which still uses the same hinges as a S1-2 is attached w/ 1/4-28 UNF hardware. I can't verify that today since the coupe is 900 miles away.

Roger

[types26/36]

Pretty sure my pre-airflow coupe, which still uses the same hinges as a S1-2 is attached w/ 1/4-28 UNF hardware.Roger

Roger,
You got me thinking so took one nut off and mine are definatly 1/4UNC anthough not Nylocs as stated in the Manual.

[mbell]

Not sure on the stud thread but the female holes on my +2 hinges are 1/4unf (tpi). Can't see why they would be different on an elan.

[alan.barker]

On a +2 the hinges are the same as a S4 Elan. But S1 and S2 hinges are i think different.
Alan

[Ianashdown]

Well, I think we’ve established that they are 1/4”! I think I’ll take both UNC & UNF!

Ian

[nomad]

My S1 are UNC and appear to have been some kind of a self tapper. All studs have flutes like a tap and are very hard. One was broken and a near impossibility to remove. The others would very obviously have broken if I had kept trying to remove them. Planned to remove for plating and replace with better studs but gave up on that and after great difficulty had to heli-coil the broken one.

Kurt
26/3754