Author Topic: Carriage bolt sizes for truck box  (Read 3779 times)

Offline ggevaert

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Carriage bolt sizes for truck box
« on: October 14, 2009, 09:35:01 PM »
Hello,

   I have a 1984 GMC sierra c1500 1/2 ton 2 wheel drive that came without a box but originally had an 8' fleetside box. I have since purchased an 8' fleetside  box but it comes without the carriage bolts. I have read through the forums and noted that I will need 1/2" 13nc threads carriage bolts but the actual lengths seems to vary depending on the thread.  ???

  Can someone please confirm for me what lengths I would need for the 8 bolts. I do know there is one really long bolt needed on the drivers side.

Thank You in advance for any help  ;D
 
Gary
« Last Edit: October 14, 2009, 09:41:50 PM by ggevaert »

Offline 4x4orbust

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Re: Carriage bolt sizes for truck box
« Reply #1 on: October 21, 2009, 09:48:36 PM »
i just bought new ones for my 6 ft box, the short ones i bought were 5", and the long one was 12".  I cut them down after i put them on, about 1/2 in after the nut.
1982 chevy K-10 SWB, 355 th350/np208. 2.5"lift, 33" swampers, headers/duals,  current project

Offline SUX2BU99

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Re: Carriage bolt sizes for truck box
« Reply #2 on: November 02, 2009, 12:23:29 PM »
Is there a vendor out there that sells the right ones as a package?
85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.

Offline jaredts

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Re: Carriage bolt sizes for truck box
« Reply #3 on: November 02, 2009, 08:12:06 PM »
Yes there is, but wouldn't want to discuss that unless Chris can't get 'em.

Offline Irish_Alley

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Re: Carriage bolt sizes for truck box
« Reply #4 on: November 03, 2009, 02:59:32 AM »
ggevaert just a wild shot but do you live in Delaware.??? saw someone buying 5" and 12" carage bolts at Harrington ace yesterday
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