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Made-to-Order Shims
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If you need a unique shim shape or size, we’ll precision cut it for you. With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
Send your dimensioned DWG, DXF, IGES, or STEP file to sales@mcmaster.com. Please leave at least 1/8" wall between shim edge and holes. Minimum hole size is 1/8". Shims should be no smaller than 1" × 1" square or 1" OD. Maximum shim dimension is the largest overall length, width, or diameter of your custom shim.
Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
2" × 2" Maximum Shim Size | 5" × 5" Maximum Shim Size | 7" × 7" Maximum Shim Size | 11" × 11" Maximum Shim Size | 23" × 23" Maximum Shim Size | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thk. | Thk. Tolerance | Min. Hardness | Specs. Met | Mil. Spec. | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | |||||||
Brass | |||||||||||||||||||||
| 0.001" | -0.00005" to 0.00005" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N324 | 000000 | 4 | 11885N334 | 000000 | — | ——— | 0 | — | ——— | 0 | — | ——— | 0 | ||
| 0.002" | -0.0001" to 0.0001" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N325 | 00000 | 4 | 11885N335 | 00000 | 9 | 11885N344 | 0000000 | 4 | 11885N352 | 0000000 | 1 | 11885N359 | 0000000 | ||
| 0.003" | -0.00015" to 0.00015" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N326 | 00000 | 4 | 11885N336 | 00000 | 9 | 11885N345 | 000000 | 4 | 11885N353 | 000000 | 1 | 11885N361 | 000000 | ||
| 0.004" | -0.0002" to 0.0002" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N327 | 00000 | 4 | 11885N337 | 00000 | — | ——— | 0 | — | ——— | 0 | — | ——— | 0 | ||
| 0.005" | -0.00025" to 0.00025" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N328 | 00000 | 4 | 11885N338 | 00000 | 9 | 11885N346 | 000000 | 4 | 11885N354 | 000000 | 1 | 11885N362 | 000000 | ||
| 0.01" | -0.0005" to 0.0005" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N329 | 00000 | 4 | 11885N339 | 00000 | 9 | 11885N347 | 000000 | 4 | 11885N355 | 000000 | 1 | 11885N363 | 000000 | ||
| 0.02" | -0.001" to 0.001" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N331 | 00000 | 4 | 11885N341 | 00000 | 9 | 11885N348 | 000000 | 4 | 11885N356 | 000000 | 1 | 11885N364 | 000000 | ||
| 0.025" | -0.00125" to 0.00125" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N332 | 00000 | 4 | 11885N342 | 00000 | 9 | 11885N349 | 000000 | 4 | 11885N357 | 000000 | 1 | 11885N365 | 000000 | ||
| 0.031" | -0.00155" to 0.00155" | Rockwell B60 | ASTM B36 | Fed. Spec. QQ-B-613 | 16 | 11885N333 | 00000 | 4 | 11885N343 | 00000 | 9 | 11885N351 | 000000 | 4 | 11885N358 | 000000 | 1 | 11885N366 | 000000 | ||
