fan bolts

[poolcues]

does anyone know the bolt size thant holds the fan to the waterpump. it's on an 91 k2500 305ci. one bolt backed out and the other 3 snapped, need to replace them and wanting to know the size, drawing a blank.thanks in advance

 

[NewUser]

on my 77 they are 5/16 x 24 ...on yours id almost bet they are metric 10 x 1.25( or close to it)

 

[4X4HIGH]

Those should be studs and not bolts and are either 5/16 x 18 or 8mm x 1.25 into the hub flange. The opposite end of the stud will be a fine thread.

 

[NewUser]

Those should be studs and not bolts and are either 5/16 x 18 or 8mm x 1.25 into the hub flange. The opposite end of the stud will be a fine thread.

i forgot about the threads being different one each end of the studs

 

[poolcues]

thanks for the replies. it's off to the parts store