Gorilla Mill → RobbJack cross-reference
Running Gorilla Mill — known for aggressive high-performance solid-carbide end mills (Carbide Grinding Co.)? Enter your Gorilla Mill part number below and we'll look up its specs, then match the closest RobbJack equivalent. Running Gorilla Mill? Match the size here to the RobbJack line tuned for your material — USA-made, with per-tool speeds & feeds and a performance guarantee on a test tool.
What is a good alternative to Gorilla Mill end mills?
The closest USA-made alternative to Gorilla Mill end mills is RobbJack, an employee-owned manufacturer that has built solid carbide cutting tools in Lincoln, California since 1959. Gorilla Mill's Gorilla Mill, Silverback and Phenom lines cross most often to RobbJack's SPS and AL3 lines, with free tested speeds and feeds, CAD and CAM libraries, and a performance guarantee on a trial tool — enter any Gorilla Mill part number below and we match the closest RobbJack equivalent by actual spec, not by catalog page.
| Gorilla Mill | Sizes | RobbJack equivalent | Why it crosses |
|---|---|---|---|
| Gorilla Mill | .118"–1" | SPSSPS Super Python Series | Same 4-flute, ball end, square end, corner radius geometry; 94% of the sizes we checked have an exact RobbJack standard. |
| Silverback | .118"–1" | AL33 Flute Aluminum Chatter Reduction Hi-Performance Carbide End Mill | Same 3-flute, square end, corner radius, ball end geometry for aluminum; 100% of the sizes we checked have an exact RobbJack standard. |
| Phenom | .118"–1.25" | SPSSPS Super Python Series | Same 5-flute, square end, corner radius geometry; 82% of the sizes we checked have an exact RobbJack standard. |
| Yeti | .118"–1" | SPSSPS Super Python Series | Same 4-flute, square end, corner radius geometry; 95% of the sizes we checked have an exact RobbJack standard. |
| Kong | .236"–1.25" | STSuper Tuffy Grade Carbide End Mill | Same 6-flute, square end, corner radius, ball end geometry; 87% of the sizes we checked have an exact RobbJack standard. |
| Gorilla Mill Neck Relieved | .250"–1.25" | SPSSPS Super Python Series | Same 5-flute, square end, corner radius geometry; 89% of the sizes we checked have an exact RobbJack standard. |
| Silverback Neck Relieved | .250"–1" | AL33 Flute Aluminum Chatter Reduction Hi-Performance Carbide End Mill | Same 3-flute, square end, corner radius geometry for aluminum; 100% of the sizes we checked have an exact RobbJack standard. |
| Sasquatch | .315"–1" | SPSSPS Super Python Series | Same 4-flute, square end, corner radius geometry; 97% of the sizes we checked have an exact RobbJack standard. |
Matched by RobbJack's cross-reference engine against Gorilla Mill's published end mill specs, exact standard sizes only. Your exact part number below gives the size-for-size match.
Switching to RobbJack?
Enter your current tool's part number and we'll look up its specs — or type them in — and match the closest RobbJack equivalent, ranked by fit, with speeds & feeds and a quote one click away.
Crossing a Gorilla Mill tool to RobbJack
There's no universal part-number standard across cutting-tool brands, so we match on what actually determines performance: cutting diameter, flute count, end type and corner radius, length of cut, work material, and coating. Enter your Gorilla Mill part number and we'll look up those specs automatically — or type in what you know. RobbJack matches your size to its nearest standard (for example RobbJack's .030 corner radius for a .031), and you can require an exact match or allow a near-size upgrade.
Don't see a match? RobbJack builds a huge range of specials. Send us the Gorilla Mill part number and our application engineers will cross-reference it directly — often a longer-lasting, faster-cutting upgrade, not just a like-for-like swap. Gorilla Mill is a trademark of its owner; RobbJack is not affiliated with Gorilla Mill, and cross-references are for identification only.
How do I cross-reference a Gorilla Mill part number to RobbJack?
Enter the Gorilla Mill part number in the cross-reference tool on this page. It looks up that tool's specs and matches the closest RobbJack standard on what determines performance — cutting diameter, flute count, end type and corner radius, length of cut, work material and coating. If nothing matches, send the part number and a RobbJack application engineer will cross it by hand.
What is the RobbJack equivalent of Gorilla Mill Gorilla Mill?
Gorilla Mill Gorilla Mill 4-flute end mills most often cross to the RobbJack SPS line (SPS Super Python Series) — for example SPS-503-32-010. Same 4-flute, ball end, square end, corner radius geometry; 94% of the sizes we checked have an exact RobbJack standard. Enter your exact Gorilla Mill part number in the tool on this page for the size-for-size match.
Popular Gorilla Mill part numbers and their RobbJack equivalents
- 00001→ RobbJack MST-430-03
- 00002→ RobbJack MST-430-03
- 00004→ RobbJack MHM-402-03
- 00005→ RobbJack MHM-402-03
- 00006→ RobbJack MST-430-04
- 00007→ RobbJack MHM-402-04
- 00008→ RobbJack MHM-402-04
- 00009→ RobbJack MHM-402-04
- 00010→ RobbJack MST-430-05
- 00011→ RobbJack MHM-402-05
- 00012→ RobbJack MHM-402-05
- 00013→ RobbJack MHM-402-05
- 00014→ RobbJack MST-430-06
- 00015→ RobbJack MST-430-06
- 00017→ RobbJack MXG-402-06
- 00018→ RobbJack MXG-402-06