MD Tire carrier bolt, washer nut combo

[1970cstblazer]

Originally Posted by darkhorse970

Do you know if these will work with the in-bed spare tire carrier for 67-72 trucks?

GM part number for the Blazer spare tire bolt is 3991023 and is 6-7/8” long.



For the side mount spare, it depends on the year. 1971-72 are different number. Here is an excerpt from a GM parts book:



Here is GM 325485. It is 9/16″ X 18 X 8-1/2":



Here is an earlier parts book showing different part numbers:



Here is an exploded diagram of the side mounted spare: