This is the short head bolt (1-15/16" long) for 1916-1928 Chevrolet cars & trucks. See also AF-215 for a full set of both long and short bolts.
CAUTION: these are the original 1/2"-12 bolt thread (NOT 1/2-13). This thread is a British standard thread and NOT the same as USA. It is not a common bolt. BEFORE INSTALLATION, IT IS ABSOLUTELY NECESSARY TO CLEAN THE THREADS IN THE BLOCK WITH A PROPER 1/2-12 TAP. Order FS-360 Tap for 1/2"-12 thread to clean block threads.
AF-215 SET INCLUDES:
4 EACH 1/2"-12 X 1-15/16" SHORT HEAD BOLTS.
TORQUE SPECIFICATIONS FOR EARLY VEHICLES
Prior to the late 1940ís there were no torque specifications.
Years ago we found a universal chart of TorqueValues.
It has been extremely helpful when working on vehicles prior to 1949.
Of course, it is recommended that bolt threads be cleaned with a wire brush and oiled before being torqued (do not oil wheel lug bolts).
Add a few drops of oil and you will be ready to torque your bolts.
"Technically there is a difference between the torque given to a fine thread bolt and that given to a coarse thread bolt.
So for increased convenience the chart has been simplified and practical shop values given.
For example, when 75 foot pounds is desired, the value will be given as, perhaps, 70-80 foot pounds.
For your old Chevy, use ONLY the plain steel torque value.
TORQUE VALUES for Fine or Coarse Thread Bolts
(Torque figures are in foot pounds)
Bolt Diameter Plain
We offer new head bolts for 1916-1928 Chevy 4-Cylinder engines and also 1929-1932 Chevy 6-Cylinder engines.
For 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 Chevrolet Cars