This screw has multiple uses on all 1929-1954 Chevrolet & GMC cars & trucks. It is used on the front engine plate to block mounting. Three screws are required per engine. It is also used on the rear of water pumps to mount the back plate to the water pump housing. 5/16-18 thread x 1/2" countersunk flat head slotted screw. Head diameter 9/16". Replaces GM# 133822
1929-1954 Chevrolet & GMC cars & trucks - FRONT ENGINE PLATE MOUNTING
1937-1954 Chevfolet & GMC cars & trucks - REAR WATER PUMP PLATE MOUNTING
This part fits most 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1946 1947 1948 1949 1950 1951 1952 1953 1954 Chevrolet Cars and Trucks.; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.
This product can expose you to a chemical, which is known to the State of California to cause cancer or reproductive harm.
For more information go to www.P65Warnings.ca.gov