Mr. Gasket Short Carburetor Studs put an end to stripped-out threads in cast aluminum manifolds, holding the gasket in place and perfectly aligning the carburetor in position. Zinc-plated and 1-3/8 inch long, they have 5/16-18 threads on one end and 5/16-24 on the other, come in a package of four, and have four matching nuts and washers to complete the job.