SD 2 bbl carb screw needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71swb4x4 · 05-18-2011, 10:26 PM

I need one of the round headed (flat screwdriver) screws that holds a 2 bbl carb together. I have a 67 with a 292, and one of the four screws fell out. Does anyone have one of these screws?

**Ironhorse** · 05-18-2011, 10:42 PM

I "might" have one if you can post a pic with length and diameter sizes. Have several carb parts laying in a box, not sure what they came from. No promises but will look if I know what I'm looking for. Yours for postage if I have it.

71swb4x4 · 05-19-2011, 09:34 PM

I believe the bolt size is #12 and the thread count is 28 TPI.
From the bottom of the head to the end of the bolt it is about 15/16" long. The head is a little more about 3/16" thick. Total bolt length including head is about 1 1/8".

Here is a picture

71swb4x4 · 05-19-2011, 09:35 PM

I tired the local farm supply store and they have NOTHING in a #12-28. I found a #12 once and is was a #12-24.

**Ironhorse** · 05-20-2011, 07:22 AM

Thanks for the info on the carb screw, makes it easier to look for something when I know what I'm looking for.

Will check later today and get back to you.

**Ironhorse** · 05-20-2011, 12:45 PM

Sorry but can't help on this one. Checked all the odd carb screws I have and all are either too short or too long. 3/4 " and 1 5/16" in length.

71swb4x4 · 05-20-2011, 01:37 PM

Thanks for checking, I appreciate it. I will keep looking.

05-18-2011, 10:42 PM	#2
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: 2 bbl carb screw needed I "might" have one if you can post a pic with length and diameter sizes. Have several carb parts laying in a box, not sure what they came from. No promises but will look if I know what I'm looking for. Yours for postage if I have it. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

05-19-2011, 09:34 PM	#3
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: 2 bbl carb screw needed I believe the bolt size is #12 and the thread count is 28 TPI. From the bottom of the head to the end of the bolt it is about 15/16" long. The head is a little more about 3/16" thick. Total bolt length including head is about 1 1/8". Here is a picture Attached Images __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

05-19-2011, 09:35 PM	#4
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: 2 bbl carb screw needed I tired the local farm supply store and they have NOTHING in a #12-28. I found a #12 once and is was a #12-24. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

05-20-2011, 07:22 AM	#5
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: 2 bbl carb screw needed Thanks for the info on the carb screw, makes it easier to look for something when I know what I'm looking for. Will check later today and get back to you. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

05-20-2011, 12:45 PM	#6
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: 2 bbl carb screw needed Sorry but can't help on this one. Checked all the odd carb screws I have and all are either too short or too long. 3/4 " and 1 5/16" in length. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

05-18-2011, 10:26 PM	#1
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	2 bbl carb screw needed I need one of the round headed (flat screwdriver) screws that holds a 2 bbl carb together. I have a 67 with a 292, and one of the four screws fell out. Does anyone have one of these screws? __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

05-20-2011, 01:37 PM	#7
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: 2 bbl carb screw needed Thanks for checking, I appreciate it. I will keep looking. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.