bolts used on the 1968 F100 with the flex o matic suspension.
Rear spring bushing bolt part # needed
Ford Parts Specialist
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From: Simi Valley, CA
380857-S2 .. Bolt - 5/8" -11 x 4.50" long / Obsolete ~ No Ford dealer or obsolete parts vendor has any.
Hotshot
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From: Phoenix, Az.
I believe this is the same gentleman that had a thread a while back on these bushings. He ended up figuring out he needed 9/16" I.D. bushings. I have a sneaky feeling what he actually needs is C8TZ5776A instead of separate 9/16" bolts and the 5627 that was only available in the C8TZ5630A shackle kit.
Bill, can you please post illustration section 53, page 15 please?
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Mountain Pass
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Bolts are 9/16 thread size with 12 thread count (same as the U-bolt size). The flange heads are 7/8". Bolts are used on front bushing and rear flexomatic to frame mount bushing. The flange nuts are the same as the U-bolt flange nuts, 9/16" with 7/8"head. Bushings are 1 3/8" O.D. x 5/8" I.D. x 2 3/4" long for all 8 bushings. The double bolt (9/16" also) is used where the rear spring mounts to the flex0matic bracket. The hole in the bushings are 5/8" the bolts are 9/16", so you have a 1/16" clearance between bolt and bushing. NPD has the exact bushings new, # F-5781-5
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
I believe this is the same gentleman that had a thread a while back on these bushings. He ended up figuring out he needed 9/16" I.D. bushings. I have a sneaky feeling what he actually needs is C8TZ5776A instead of separate 9/16" bolts and the 5627 that was only available in the C8TZ5630A shackle kit.
Bill, can you please post illustration section 53, page 15 please?
Bill, can you please post illustration section 53, page 15 please?
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Bolts are 9/16 thread size with 12 thread count (same as the U-bolt size). The flange heads are 7/8". Bolts are used on front bushing and rear flexomatic to frame mount bushing. The flange nuts are the same as the U-bolt flange nuts, 9/16" with 7/8"head. Bushings are 1 3/8" O.D. x 5/8" I.D. x 2 3/4" long for all 8 bushings. The double bolt (9/16" also) is used where the rear spring mounts to the flex0matic bracket. The hole in the bushings are 5/8" the bolts are 9/16", so you have a 1/16" clearance between bolt and bushing. NPD has the exact bushings new, # F-5781-5
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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
I believe this is the same gentleman that had a thread a while back on these bushings. He ended up figuring out he needed 9/16" I.D. bushings. I have a sneaky feeling what he actually needs is C8TZ5776A instead of separate 9/16" bolts and the 5627 that was only available in the C8TZ5630A shackle kit.
These bushings are 1 3/8" O.D. x 5/8" I.D x 2 3/4" long: 1968 F100, 1969 F100 before serial number F70,001.
1969 F100 from serial number F70,001, 1970/72 F100 takes 3 DOHZ-5781-A bushings: 1 3/8" O.D. x 9/16" I.D. x 2 3/4" long.
So does the OP actually have a 1969 F100 from serial number F70,001 or have the rear springs been replaced?
C8TZ-5776-A .. Rear Spring REAR Shackle Bracket includes two threaded studs that fit thru the 2 upper bushings in the compensator.
The only bolt required fits thru the lower (bottom) spring bushing in the compensator.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
OP has a 1968 F100 with Flex-O-Matic. Takes 3 C8TZ-5781-B bushings.
These bushings are 1 3/8" O.D. x 5/8" I.D x 2 3/4" long: 1968 F100, 1969 F100 before serial number F70,001.
1969 F100 from serial number F70,001, 1970/72 F100 takes 3 DOHZ-5781-A bushings: 1 3/8" O.D. x 9/16" I.D. x 2 3/4" long.
So does the OP actually have a 1969 F100 from serial number F70,001 or have the rear springs been replaced?
C8TZ-5776-A .. Rear Spring REAR Shackle Bracket includes two threaded studs that fit thru the 2 upper bushings in the compensator.
The only bolt required fits thru the lower (bottom) spring bushing in the compensator.
These bushings are 1 3/8" O.D. x 5/8" I.D x 2 3/4" long: 1968 F100, 1969 F100 before serial number F70,001.
1969 F100 from serial number F70,001, 1970/72 F100 takes 3 DOHZ-5781-A bushings: 1 3/8" O.D. x 9/16" I.D. x 2 3/4" long.
So does the OP actually have a 1969 F100 from serial number F70,001 or have the rear springs been replaced?
C8TZ-5776-A .. Rear Spring REAR Shackle Bracket includes two threaded studs that fit thru the 2 upper bushings in the compensator.
The only bolt required fits thru the lower (bottom) spring bushing in the compensator.
1-C8TA5627D......bar.
1-C8TZ5A709A.....compensator.
1-C8TZ5776A.......shackle.
1-D0HZ5781A.....bushing.
3-33774-S4..........nuts/
1-56215-S4........BOLT (4=Phosphate and oil coated)
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