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By Malcolm N Macleod on Sunday, December 13, 2009 - 11:05 pm:Can anyone tell me what thread type is used and what are the most common sizes are on the Model T
By jack daron-Indy. on Sunday, December 13, 2009 - 11:39 pm:All are SAE and most are fine thread. There's a chart floating around here with most listed. It is a bit small for these old eyes to read,but other than that ok.
By Seth Harbuck - Shreveport, LA on Monday, December 14, 2009 - 05:45 am:5/16"-24 UNF is probably the most common, with 3/8"-24 UNF a close second. The head bolts are 7/16"-14 UNC and the spindle bolts are 1/2"-20 UNF. All threads on the T are right hand, I believe.
There are a few oddball threads no longer used, like #14-28 found on the flywheel and the bendix cover holddown screws.
By peter kable on Monday, December 14, 2009 - 08:02 am:I was given a set of Model T taps and dies by some Model T friends a few years ago.
This is the list that came with them.
1/4-24 Bendix cap & mag brass screws
5/16-24 general bolts
3/8 24 Rod and wrist pins bolts.
3/8-16 Some engine block & wheel rim bolts
7/16-14 head stud
7/16-20 tie rod & spring shackles
1/2-20 king pin, main bearing bolts, head light.
9/16-18 steering arm, radius rod, rear spring bracket, camshaft
5/8-18 rear axle
11/16-16 rear spring perch
3/4-14 differential plug,late- square wrench hole
3/4-16 front axle -right and left hand thread.
3/4-24 diff plug early, hex head, pan drain plug
13/16-16 Camshaft -timing gear nut
1-7/8-16 exhaust manifold
1/8-27 pipe oil petcock
13/32-16 tail spoo; -tap
2-1/8-24 wheel hub and hub cap.
By Seth Harbuck - Shreveport, LA on Monday, December 14, 2009 - 08:13 am:Well, I believe we were both wrong. Bendix cover and mag brass screws are #14-24 which is far closer to 1/4"-24 than #14-28 so I was way off.
Thanks Peter for your list.
Seth
By Robert Ducharme on Monday, December 14, 2009 - 10:22 am:Take a look at the following web site:
http://clubs.hemmings.com/frameset.cfm?club=ncmtc
On the left column is a "Technical" link. Click that and then click the "Bolts - Nuts" link on the left. This brings up a document with pretty much all the bolts / nuts and other threaded parts on a Model T. If there is something that is different for a given year, that is also documented. Note that this is a work in progress so if you see something incorrect, please let me know.
By Randall Anderson on Tuesday, December 15, 2009 - 06:12 pm:The passenger spindle nut is RH thread, but this is hardly unique to the T.
By Aaron Griffey on Tuesday, December 15, 2009 - 11:20 pm:The passenger's side spindle nut is LEFT hand thread, unless you've a rt. hand drive car.
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