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Old 01-05-2009, 07:50 AM   #1
eastcoastcivil
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Anyone know Bed to frame bolt sizes?

Does anyone know where I can find out the correct size and lengths of the 8 bolts needed to mount my bed to my frame? And I know I need washers, lock washers and nuts. Thanks
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Old 01-05-2009, 08:50 AM   #2
my67chevytruck
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Re: Anyone know Bed to frame bolt sizes?

I bought my replacement bolts at : www.gmcpauls.com. , as i could only find galvanized local. after i placed the order I saw some zinc coated at Tractor Supply. The size is 5/16 and the length is 4' . this is a carriage bolt.
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470

Last edited by my67chevytruck; 01-05-2009 at 08:57 AM.
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Old 01-05-2009, 11:00 AM   #3
corn
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Re: Anyone know Bed to frame bolt sizes?

I went to the local hardware store & got mine. Less than $5 if I remember correct...

Last edited by corn; 01-05-2009 at 11:01 AM.
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Old 01-05-2009, 11:44 AM   #4
my67chevytruck
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Re: Anyone know Bed to frame bolt sizes?

yep .. hindsight is 20/20 could have saved 10 bucks....
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470
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Old 01-05-2009, 02:14 PM   #5
eastcoastcivil
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Re: Anyone know Bed to frame bolt sizes?

I went to a fastener store and paid 4 bucks for 8 bolts, washers, lock washers and nuts. LMC wants 20 bucks and by the time I factor in the exchange and freight to Canada its way more than that. Thanks guys...you are a godsend as always
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Old 01-05-2009, 03:23 PM   #6
BIGMAC68
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Re: Anyone know Bed to frame bolt sizes?

I belive the correct size for these bolts is 3/8-16 x 4" carriage bolts. I did at one time pull a steel floor bed apart that had 6 of these and 2 7/16" bolts? Go figure.
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Old 01-05-2009, 06:28 PM   #7
my67chevytruck
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Re: Anyone know Bed to frame bolt sizes?

I should have put IIRC then, i was going off memory.... Hopefully the 5/16 work if not i am sure he can exchange for 3/8
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470
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Old 01-05-2009, 06:39 PM   #8
Botietruck
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Re: Anyone know Bed to frame bolt sizes?

I just installed mine, they are 3/8" bolts.
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Old 01-05-2009, 07:51 PM   #9
Ace in the hole
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Re: Anyone know Bed to frame bolt sizes?

When I had my steel floor off, 6 of the originals were 3/8 and 2 were 7/16.
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Old 01-06-2009, 12:02 AM   #10
chevymad
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Re: Anyone know Bed to frame bolt sizes?

6 of mine are 3/8s. The front most 2 are 1/2"
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Old 01-08-2009, 01:16 PM   #11
truckintexas
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Re: Anyone know Bed to frame bolt sizes?

I'm kind of jumping in, but it's related. Does anyone know why the bed mounting washers have the hole offset? There's probably a reason. Also, have any of you used just normal washers with success? Thanks.
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Old 01-08-2009, 02:49 PM   #12
my67chevytruck
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Re: Anyone know Bed to frame bolt sizes?

the only ones i have seen with offset washers are for wood floors.
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FAQ how to's


1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470
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