Technical Thread size for ac compressor mounting bolts

[Henliston]

Hi everyone, I’ve just replaced the ac compressor on my 16v sporting GP (199a6000 engine) and one of the bolts snapped during removal. I ordered new bolts (x3) and they’re too short. It currently secured with only two bolts.
The snapped bolt had a shank length of 115 - 120mm (estimating on what was left in the mounting bracket) Just not sure what the thread is? Any guidance would be appreciated.

 

[varesecrazy]

What is the head size?
( will give an indication of pitch)

Cant you look at the snapped one...
Gauge the length.. and thread from that..?

 

[Henliston]

Hi its a 13mm AF bolt that is approx 115mm length - it looks the same thread as many other bolts on the engine eg crankshaft pulley. Just don't want to have to go to fiat and pay their prices.

Thanks

 

[varesecrazy]

Hi its a 13mm AF bolt that is approx 115mm length - it looks the same thread as many other bolts on the engine eg crankshaft pulley. Just don't want to have to go to fiat and pay their prices.

Thanks

Hi
Normally equates to a standard M8
Thats 8.0 diameter and 1.25 mm pitch
Known as metric COARSE

So in a 12.5mm section you will have 10 threads

Measure against the thread.. see the distance 10 threads covers

IF its nearer 10mm then likely to be Metric FINE 8.0 X 1.0 Pitch

 

[varesecrazy]

An agricultural place is usually good for bolts like these..
and probably still trading during Covid

 

[Henliston]

Thx thats perfect

 

[varesecrazy]

Please confirm what thread it is..