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Old 06-27-2014, 07:38 AM   #26
DeadheadNM
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Re: Name that bolt/nut/screw size

Gravel guard uses Phillips head bolt, 1/2" nut, and a star washer as shown on this 72 example I believe is untouched since left GM
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Old 06-27-2014, 07:39 AM   #27
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Re: Name that bolt/nut/screw size

Hatch handle uses tapered head Phillips head screw 1.25" long
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Old 06-27-2014, 07:42 AM   #28
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Re: Name that bolt/nut/screw size

So 1/2 nut would mean 1/4 threads IIRC?
That screw looks like it would be a #8 or #10??

Thanks for the pics!!!
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Old 06-27-2014, 07:44 AM   #29
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
So 1/2 nut would mean 1/4 threads IIRC?
That screw looks like it would be a #8 or #10??

Thanks for the pics!!!
Sorry not sure re: the sizes otherwise but happy to help with pics
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Old 06-27-2014, 07:51 AM   #30
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Re: Name that bolt/nut/screw size

I looked up, it would be 5/16 threads on gravel guards.
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Old 06-27-2014, 07:58 PM   #31
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Re: Name that bolt/nut/screw size

Hatch handle screw is #8-1.25"
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Old 06-27-2014, 08:34 PM   #32
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
I looked up, it would be 5/16 threads on gravel guards.
Yeah that's the "normal" standard. 1/4" bolts have a 7/16" head and nut, 3/8" bolts have a 9/16" and a 7/16 bolt has a 5/8". There are possible variations like those 12 point hood latch bolts but these are normal I.D. for buying bolts.

Quote:
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Hatch handle screw is #8-1.25"
Instead of "tapered" those screws would be called "countersunk" I have an unmolested '70 Jimmy partially tore apart that may provide some info you are wanting on this thread.

The rear seat hold down bolts are a 7/16" fine thread, as well as the seat belt bolts front, rear and the threaded holes in the roof where a shoulder harness was possible.

Great thread!---DAC
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Old 06-27-2014, 10:08 PM   #33
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Re: Name that bolt/nut/screw size

70gmcjimmy, some of the questionable bolt size/threads have been answered. But your more then welcome to post any others. Skim thru and read all the post since it wont let me go back and edit the first posting.
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Old 06-27-2014, 10:11 PM   #34
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Re: Name that bolt/nut/screw size

screw/bolt head types.
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Old 06-27-2014, 11:48 PM   #35
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
So 1/2 nut would mean 1/4 threads IIRC?
That screw looks like it would be a #8 or #10??

Thanks for the pics!!!
Quote:
Originally Posted by DeadheadNM View Post
Sorry not sure re: the sizes otherwise but happy to help with pics
Quote:
Originally Posted by Dale99 View Post
I looked up, it would be 5/16 threads on gravel guards.
Quote:
Originally Posted by Dale99 View Post
70gmcjimmy, some of the questionable bolt size/threads have been answered. But your more then welcome to post any others. Skim thru and read all the post since it wont let me go back and edit the first posting.
Quote:
Originally Posted by DeadheadNM View Post
Hatch handle uses tapered head Phillips head screw 1.25" long
Well, sorry. I just went off some of these posts from earlier today. Have read it all but memory isn't so good at my age I guess.

DAC
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Old 06-30-2014, 11:08 AM   #36
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
Visor to windshield post screw
5/16-18 jackson panhead phillips screw, around .75 or 1.00 long. Very hard to find, however thanks to user bluek5, he found a place here. At the moment they are out, but I have a feeling if many people start placing an order, some will come into stock.
http://www.msc-stainless-fasteners.c...on-screws.html


Anyone know what screw is used to hold the hatch handle to the hatch?
I tried to order from MSC and they sent me to www.totallystainless.com. These guys seem to have everything.
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Old 08-17-2014, 04:58 PM   #37
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Re: Name that bolt/nut/screw size

ttt
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Old 08-17-2014, 09:02 PM   #38
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Re: Name that bolt/nut/screw size

very helpful thread... will add when i can also be helpful!
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Old 11-01-2014, 12:15 PM   #39
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Re: Name that bolt/nut/screw size

I'm trying to dig out the correct mount bolts for the OEM spare tire carrier to post example pics...I know I need one more (body shop lost one).
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Old 11-01-2014, 01:52 PM   #40
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by DeadheadNM View Post
I'm trying to dig out the correct mount bolts for the OEM spare tire carrier to post example pics...I know I need one more (body shop lost one).
I have none of the bolts for my spare tire carrier, so I'll be waiting eagerly for this info. I appreciate you taking the time to do the research. My spare tire carrier goes to powder coat next week and I want to get the bolts done as well.
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Old 11-01-2014, 04:58 PM   #41
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Re: Name that bolt/nut/screw size

Still digging - I know I have some. They are similar to these seat bolts removed from a suburban but IIRC the head was larger and not as tall, fine thread maybe 1/2"?
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Old 11-01-2014, 05:00 PM   #42
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Re: Name that bolt/nut/screw size

Examples of carb stud and wing nut to attach the air cleaner to the carb

EDIT: The stud is 6 7/16" in length
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Last edited by DeadheadNM; 11-01-2014 at 10:27 PM.
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Old 11-01-2014, 05:02 PM   #43
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Re: Name that bolt/nut/screw size

Rubber upper rad heater hose w part # and tower clamps (from my 72 K1500 GMC but should be same for K5) - a segment of the metal hose can be seen.
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Old 11-01-2014, 05:03 PM   #44
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Re: Name that bolt/nut/screw size

Bracket to affix the power steering hoses to the frame
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Old 11-01-2014, 10:12 PM   #45
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Re: Name that bolt/nut/screw size

Spare tire bolts are 7/16-20 X 1.00 with outtie star washers. They are 5/8 socket. I broke one of mine off and going to have to tap and find another.
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Old 11-01-2014, 10:17 PM   #46
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Re: Name that bolt/nut/screw size

The screws that hold the cap onto the top of the door are #8x.50 Countersunk oval.
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Old 11-01-2014, 10:28 PM   #47
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
Spare tire bolts are 7/16-20 X 1.00 with outtie star washers. They are 5/8 socket. I broke one of mine off and going to have to tap and find another.
Quote:
Originally Posted by Dale99 View Post
The screws that hold the cap onto the top of the door are #8x.50 Countersunk oval.
Thanks Dale! Any pics to add?
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1972 K1500 GMC: http://67-72chevytrucks.com/vboard/s...d.php?t=638747

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, AASmedic, SoCoC10, Lumaestas, carbuff382
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Old 11-01-2014, 10:47 PM   #48
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Re: Name that bolt/nut/screw size

Quote:
Originally Posted by Dale99 View Post
Spare tire bolts are 7/16-20 X 1.00 with outtie star washers. They are 5/8 socket. I broke one of mine off and going to have to tap and find another.
Sweet! Thanks. I need to locate 4 of these.
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Old 11-30-2014, 08:20 PM   #49
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Re: Name that bolt/nut/screw size

Can anybody post a picture of the double wall top to bed rail OEM bolts?
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Old 12-02-2014, 11:08 AM   #50
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Re: Name that bolt/nut/screw size

http://67-72chevytrucks.com/vboard/s...d.php?t=362908
This is post for body mount bolt size and length that I found. Another guy asked and I found this.
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