Rear leaf spring forward link bolt

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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Neil Wilson
Posts: 2849
Joined: February 5th, 2003, 9:42 pm
Body Type: 82-A/89-A
Model Year: 1930
Location: Boulder, CO
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Re: Rear leaf spring forward link bolt

Post by Neil Wilson » December 25th, 2014, 7:35 am

An AA friend offered the following as a solution to making your own rear shackle bolts for about $10 each:
  • Original A-21320 shoulder bolt
    3/4-16 x 4-3/16
    3-1/8” – 1” shoulder; 1-1/8” thread length
    1-1/16” thread lg., head 1-1/8” hex.)
Parts from McMaster Carr at http://www.mcmaster.com/#

89955K89 - $58.56 6’ length – 72”/3-1/8” = 23.04 pieces = $2.55 each
4130 Alloy Steel Aircraft-Grade Round Tube
1.000" OD, .120" Wall Thickness (ID = .760")

91257A881 – $5.72
Grade 8 Alloy Steel Hex Head Cap Screw Zinc Yellow-Plated
3/4"-16 x 5-1/2" Length
1 3/4" to 2 1/4" Thread length – cut to 4-3/16”; drill for cotter
Head: Wd. 1 1/8"; Ht. 15/32"

$2.55 + $5.72 = $8.27

This would need to be a project to make up 23 bolts in order to use the 6' length of tube.
Regards, Neil Wilson
______________________________________
neil@aafords.com - use this email for contact
https://aafords.com/ - Ford Model AA Truck Club @ aafords.com

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spectria
Posts: 1874
Joined: May 15th, 2008, 9:53 pm
Body Type: Mail Truck, Stakebed
Model Year: 1931
Location: Quincy, Ca.

Re: Rear leaf spring forward link bolt

Post by spectria » December 25th, 2014, 7:43 am

Neil Wilson wrote:An AA friend offered the following as a solution to making your own rear shackle bolts for about $10 each:
  • Original A-21320 shoulder bolt
    3/4-16 x 4-3/16
    3-1/8” – 1” shoulder; 1-1/8” thread length
    1-1/16” thread lg., head 1-1/8” hex.)
Parts from McMaster Carr at http://www.mcmaster.com/#

89955K89 - $58.56 6’ length – 72”/3-1/8” = 23.04 pieces = $2.55 each
4130 Alloy Steel Aircraft-Grade Round Tube
1.000" OD, .120" Wall Thickness (ID = .760")

91257A881 – $5.72
Grade 8 Alloy Steel Hex Head Cap Screw Zinc Yellow-Plated
3/4"-16 x 5-1/2" Length
1 3/4" to 2 1/4" Thread length – cut to 4-3/16”; drill for cotter
Head: Wd. 1 1/8"; Ht. 15/32"

$2.55 + $5.72 = $8.27

This would need to be a project to make up 23 bolts in order to use the 6' length of tube.
Sweet Solution...
They also offer hardened tube with thinner wall if you want to cut down your bolt and sleeve it.
Dave in Quincy, Ca. I love Pics!!!! Post them All!!! :)
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org

User avatar
Neil Wilson
Posts: 2849
Joined: February 5th, 2003, 9:42 pm
Body Type: 82-A/89-A
Model Year: 1930
Location: Boulder, CO
Contact:

Re: Rear leaf spring forward link bolt

Post by Neil Wilson » December 25th, 2014, 6:08 pm

Yea, using the original bolts and cutting them down would be my choice. I don't know the cost of having that work done. But, if it would be close to the $10 per bolt, that is better in my opinion. The bolt heads would be original that way.
Regards, Neil Wilson
______________________________________
neil@aafords.com - use this email for contact
https://aafords.com/ - Ford Model AA Truck Club @ aafords.com

Stakebed
Posts: 1187
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: Rear leaf spring forward link bolt

Post by Stakebed » December 25th, 2014, 6:23 pm

Neil Wilson wrote:Yea, using the original bolts and cutting them down would be my choice. I don't know the cost of having that work done. But, if it would be close to the $10 per bolt, that is better in my opinion. The bolt heads would be original that way.
Well i have access to a lathe so that part is free...

and yea i agree from the outside no one will ever know what has been done since the bolt head and nut will be original.

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