SS-4-050
4 Flute Stub Length Tuffy Grade Miniature End Mill
0.05-in Dia 4-Flute End Mill, 0.075-in LOC, 0.125-in Shank, 1.5-in OAL
OrderingSS-4-050·Uncoated·$27.30Change finish
The best miniature tools in any size as standard — stub length for maximum rigidity
- Every .001-inch diameter from .005 to .062 is standard — all shipped from stock
- Hand-selected to any diameter to the nearest .0002-inch under .062
- Stub flute lengths (approx. 1.5x diameter, e.g. SS-2-010 has a .0150-in flute) for maximum rigidity at miniature scale
- 2 flute, 30-degree helix, square end; ball end (SS-2BN) and 4 flute (SS-4) versions available
- Tuffy grade sub-micrograin carbide, rated for materials up to 40 HRc
- Tight tolerances: cutting diameter +/-.0005-in, shank diameter -.0001/-.0002-in, flute length +.003/-.000-in
- Uniform 1/8-in shank and 1-1/2-in overall length across the range (metric MSS: 3 mm shank, 38 mm OAL)
- Coatings available: TiN (-T), TiCN (-C), AlTiN (-A) and DLC (-DLC)
From the RobbJack Applications Guide.
About this series
SS Tuffy Grade Miniature End Mills
Every .001″ is standard — and we'll hand-select any size in between.
RobbJack SS stub-length Tuffy Grade miniature end mills are stocked in EVERY .001" diameter from .005" to .062" as standard. Need a size in between? Under .062" we hand-select tools to any diameter to the nearest .0002" — a .0376" tool is a regular order, not a special. Ball-end (SS-2BN) and 4-flute (SS-4) variants are also offered. Customers report these tools run faster and longer than any others they have tried.
- Every .001" diameter from .005" to .062" is standard, shipped from stock
- Hand-selected to ANY diameter in .0002" steps under .062" (e.g. .0376")
- 2 flute, square end, 30° helix, stub length for rigidity
- Ball-end (SS-2BN) and 4-flute (SS-4) variants
- Tight tolerances held in microns
Available uncoated and in TiN, TiCN, AlTiN, and Diamond-Like Carbon (DLC) coatings
Headline spec
Cutting diameters .005"–.062" in .001" increments; 1/8" shank; 1-1/2" OAL
Best for
- MEMS & nanotechnology
- Dental & medical
- Electronics
- Die/mold detail
Specifications
US machining terms with ISO 13399 codes.
- Cutting DiameterDC
- 0.05″
- Diameter ToleranceDC tol
- 0.0005/-0.0005
- Max Cutting DiameterDCX
- 0.0505″
- Shank DiameterDMM
- 0.125″
- Length of Cut (LOC)APMX
- 0.075″
- Overall Length (OAL)OAL
- 1.5″
- Number of FlutesNOF
- 4
- Helix AngleFHA
- 30°
- Helix HandFHH
- Right-hand
- Cut Direction
- Right-hand cut
- Shank Blend Angle
- 15°
- End Type
- Square End
- Center Cutting
- Yes — plunges
- Hand-Select
- Available — any diameter to the nearest .0002"
- Series
- SS-4 — 4 Flute Stub Length Tuffy Grade Miniature End Mill
Cuts these materials
Applications
See it run
Tolerances
| Type | Min | Max |
|---|---|---|
| Cutting Diameter | +0.0005 | -0.0005 |
| Length of Cut | +0.003 | 0 |
| Overall Length | +0.06 | -0.06 |
| Shank Diameter | -0.0001 | -0.0002 |
Choose the finish(5 options)
Compare →Each finish is a different part number and price.
Not sure? Compare tool coatings — or leave it uncoated, the most common choice for aluminum.
Part SS-4-050
Made & shipped in the USA · lead time confirmed at order. Test this tool in your spindle at retail, or get it through your RobbJack distributor.
Performance guaranteed. Run it against the tool you use today — if it doesn't beat it, we'll make it right.
Uncoated
$27.30
SS-4-050
More in the SS-4 series
Same series, different size — what changes from this tool is shown in red.
- SS-4-031$32.55Ø 0.031″LOC 0.0465″4 FLOAL 1.5″
- SS-4-040$32.55Ø 0.04″LOC 0.06″4 FLOAL 1.5″
- SS-4-047$27.30Ø 0.047″LOC 0.0705″4 FLOAL 1.5″
- SS-4-055$27.30Ø 0.055″LOC 0.0825″4 FLOAL 1.5″
- SS-4-060$27.30Ø 0.06″LOC 0.09″4 FLOAL 1.5″
- SS-2-005$58.60Ø 0.005″2 FLLOC 0.01″OAL 1.5″
- SS-2-006$58.60Ø 0.006″2 FLLOC 0.012″OAL 1.5″
- SS-2-007$54.00Ø 0.007″2 FLLOC 0.014″OAL 1.5″
- SS-2-008$54.00Ø 0.008″2 FLLOC 0.016″OAL 1.5″
- SS-2-009$48.65Ø 0.009″2 FLLOC 0.018″OAL 1.5″
- SS-2-010$48.65Ø 0.01″2 FLLOC 0.015″OAL 1.5″
- SS-2-011$43.90Ø 0.011″2 FLLOC 0.0165″OAL 1.5″