McMaster 97235K49 18-8 Stainless Steel Slotted Shim, 260-Piece Assortment, Trade Size C (4" × 4")

When you don’t know the exact shim thickness you’ll need, keep multiple slotted shim thicknesses on hand so you always have the right one. Slip these shims around existing mounting fasteners to precisely align and level components such as pumps, compressors, and gearboxes with motors, all without disassembling them. They’re also good for leveling machines on uneven surfaces.

Shims with Metal Case — Protect the shims from damage with the rugged metal case.

18-8 Stainless Steel — The choice for wet and outdoor environments, these shims resist rust.