bolt size for starter ground on passenger side of block

[1993SSP]

anyone tell me what size bolt this is? Ive lost mine, dont ask me how, it's vanished! just need to know the size i'll go by the parts store and pick one up

 

[89CopCoupe]

My starters have always been grounded by the two bolts that mount it to the block. Starter ground

It should be a standard U.S. thread pitch though and they are universally sized.

(In case you aren't familiar with thread classifications)
Example: 1/4-20UNC-2A x 3

1/4" = major diameter of the threads
20 = thread pitch (number of "threads per inch")
UNC = unified national course (this pitch is considered course for the 1/4" diameter thread)
2 = class 2 fit when mated (1=loose 2=medium 3=tight)
A = external/male thread (A=external B=internal)
3 = length of thread (or from the underside of the screw head to the end of the screw

Hope that helps a little

 

[NosPony]

All i remember is it is fine thread. Can you take the starter off and take it with you to find the bolt size.

 

[1993SSP]

got the bolt, all lined out now, thanks guys!