Screw sizes vs. part.no.

[misu]

Hi guys,
do you know, where it is possible to find some table with srew and nut sizes against its part numbers? On EPC there is just a part number, but I cannot find any dimensions (thread, lenght, etc.).

It is for clasic 900, not for 9000 as it could look from my signature. I am restoring 1991 convertible, as You can see in project section.

[grif900]

that is a really good question,that i dont have the answer to. one option is a good metric thread pitch gauge and a decent calliper,i prefer digital.

[misu]

Well, the fact is that at some places aren't right bolts already... As the car was "repaired" in many different garages, they swap bolts and nuts... I thing You know what I am talking about...

Second thing is, that there are not metric threads at some points, e.g. front arms - nuts, what holds their axle inside its brackets, have a thread, what looks to be finner than ordinary metric should be, bolt what holds front spring support is too big for M12, but too small for M14 (what is second in the DIN row) and bolts what hold front brake calipers brackets looks like M12, but You cannot put M12 inside its holes, just for two or three turns...
It looks like some UNC or UNF, or any of inch size threads are on bolts and nuts around front wheels and around a rear ones it will be the same, I think...

[900t]

I have a few buckets of old nuts and bolts, I just take what I need, and put it against the other one, see if it fits and screw it right in.

There doesn't seem to be a correlation between the Saab PN and the size of bolt. The EPC only lists "bolt" or "nut" so I think only Saab knows

[grif900]

no 13 mm? ill have to ask my freind bob in Praha about this.

[900t]

Yeah if it M12 doesn't fit, and M14 doesn't fit, it is most likely, an M13. There are lots of M13 on the Saab.

[misu]

Yes, it looks like M13, but it is not DIN size. It is just M12 and next is M14...

Diameter of this screw is 12,7 mm - it looks like inch size...

I know, that there is not a correlation between part number and dimensions, but someone (Saab factory) must have table with part numbers and sizes, how they would order spares?

[cdaly]

Originally Posted by 900t

Yeah if it M12 doesn't fit, and M14 doesn't fit, it is most likely, an M13. There are lots of M13 on the Saab.

No, there are no M13 bolts on Saabs. An M13 is a bolt with a 13mm shank, not a 13mm head. The bolt with a 13mm head is an M8 while an M10 has a 17mm head and an M12 has a 19mm head. I wouldn't expect there to be any M14 bolts on the saab. Are there?

[grif900]

i thought he was talking about wrench sizes.and i cant imagine what part of the suspension would have a 1/2 in dia. hole. it could not be a 13 mm hole,as there is no m13 bolt,so what is it?

[misu]

Well, yesterday I went to my fastener supplier and now is mystery of front steering and suspension bolt and nut sizes uncovered.

Nuts, what hold upper wishbone on its brackets, are UNF 1/2", nuts for lower wishbone are UNF 5/8", bolt for front spring support is UNC 1/2" and bolts for brake caliper brackets are metric, but with fine pitch thread, M12 x 1,25.

I will prepare a table with part numbers of these screws and their dimensions, but if someone can help me from another section of the car, it would be fine.
The table should look like: Section number (from EPC); Name; Part number; Dimensions (with grade - 8.8, 10.9, etc.).

[grif900]

funny,i just got done talking to my freind bob and, he said hed be very suprised if sae sizes would be found where you live.ive only found sae nuts and bolts on saab 900s holding ball-joints to control arms here.if you want compile a list thats great but ,it has to be accurate or its just another post on a thread.