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FastCounter by bCentral |
Harley-Davidson has used many different and unusual thread sizes over the years. The following Tables list some of the most common. Please E-mail me if you are aware of any others. |
Chassis |
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Thread |
1-9/64"-24 |
1"-24 |
7/8"-24 |
Use |
Fork stem |
Fork stem |
Fork stem |
Year |
1930-36 BT |
1936-* BT |
1929-57 45 |
Thread |
3/8"-20 |
7/32"-32 |
5/16"-32 |
Use |
Star hub wheel lug |
Gas tank top screw |
Zerk fitting |
Year |
1936-72 |
1918-35 all, 1937-73 45 |
1924-* |
Thread |
7/16"-28 |
13/16"-24 |
7/8"-24 |
Use |
Clutch lever |
Handlebar end screw |
Handlebar end screw |
Year |
1941-73 45 |
1931-35 BT, 1931-39 45 |
1936-48 BT, 1940-57 45 |
Motor |
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Thread |
7/16"-20 |
7/16"-20 |
7/16"-16 |
Use |
Head bolt |
Base stud, nut |
Head bolt |
Year |
1948-83 OHV BT |
1930-83 BT |
1940-73 45, 1930-48 SV BT, 1936-47 OHV BT |
Thread |
7/16"-14 |
7/16"-14 |
3/8"-16 |
Use |
Head bolt |
Base stud, case |
Head nut |
Year |
1952-56 K, KH |
1930-83 BT |
1929-39 45, some later G (iron heads) |
Thread |
3/8"-16 |
3/8"-24 |
1/4"-24 |
Use |
Base stud, case |
Base stud, nut |
Oil pump, cam cover, trans top, etc. |
Year |
1929-85 45, K, XL |
1929-85 45, K, XL |
common through 1976 |
Fuel |
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Thread |
3/4"-20 |
1/4"-40 |
1/4"-32 |
3/4"-18 |
Use |
Linkert bowl lock nut |
Linkert needle |
Linkert float lever pin, bowl drain |
Gas tank petcock |
Year |
1933-64 |
1927-64 |
1927-64 |
1940-65 |
Click here for Harley-Davidson stroker flywheels | |||||||||||||||||||
Knuckle, Panhead |
Pan, Shovelhead |
Shovelhead |
45 WL, trike |
74, 80” Flathead |
Sportster |
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80” |
84” |
86” |
88” |
80” |
84” |
86” |
88” |
80” |
4-7/16” |
4-1/2” |
4-5/8” |
84” |
86” |
88” |
92” | 4-1/2” |
4-5/8” |
4-13/16” |
See these other Victory Library booklets | |||||||||||||
"Harley-Davidson" name for reference purposes only. Not affiliated with Harley-Davidson Motor Co. | ||||||
I'm trying to locate some people I used to know; please click here for more details. Thanks! | ||||||
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