Author Topic: Cab mounting bolts?  (Read 4307 times)

Offline 77 step

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Cab mounting bolts?
« on: November 18, 2008, 09:30:38 pm »
Hey guys,

I am installing new cab mount bushings, and was wondering if anyone knew offhand what size the blind nut is in the channel in the cab. 

They seem to be 1/2" diameter, but a 1/2-NC bolt doesn't want to start very well.  This is a replacement cab, and is off a 2wd, mid seventies rig.  I removed the old cab, and threw the bolts a couple of years ago, so I have nothing to compare to.   :-\ 

I don't need the length measurement, just diameter & pitch.

Thank you in advance for your help, I thought it would be worth asking before  trying to chase the threads.


Sean
Sean

1977 K-10 stepside under slow reconstruction.

Offline Donut

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Re: Cab mounting bolts?
« Reply #1 on: November 19, 2008, 05:16:00 am »
IIRC they're standard  1/2-13 (I'll double check the pitch when it gets light). 
'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline VileZambonie

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Re: Cab mounting bolts?
« Reply #2 on: November 19, 2008, 06:29:49 am »
I'm replacing a set today and will be ordering all new bolts. I'll let you know For sure what they are.
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 77 step

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Re: Cab mounting bolts?
« Reply #3 on: November 19, 2008, 07:09:39 am »
Thanks, guys.

Donut, that's what I thought too.  They may be messed up from the condition the bolts were in when they were removed, along with sandblasting, paint, etc.  I just didn't want to use the wrong tap to clean them.

Vile, I appreciate it.  I will be checking back to see what you find.


Sean
Sean

1977 K-10 stepside under slow reconstruction.

Offline Donut

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Re: Cab mounting bolts?
« Reply #4 on: November 19, 2008, 08:18:01 am »
I just checked, 1/2-13.  at least that's what worked for me.
'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline VileZambonie

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Re: Cab mounting bolts?
« Reply #5 on: November 19, 2008, 10:24:23 am »
Mine are 1/2" - 13 also

The bolts are about 3.75" long stock
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 77 step

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Re: Cab mounting bolts?
« Reply #6 on: November 19, 2008, 12:49:00 pm »
I appreciate the posts, guys.  Thank you very much.  Now I can stop at the hardware store on the way home and pick up some hardware (with confidence).


Sean
Sean

1977 K-10 stepside under slow reconstruction.