T12-201-07
2 Flute Stub Length Tuffy Grade Carbide End Mill
0.2188-in Dia 2-Flute End Mill, 0.3125-in LOC, 0.375-in Shank, 2.5-in OAL with Weldon Flats
OrderingT12-201-07·Uncoated·$98.40Change finish
2 and 4 flute Tuffy grade carbide end mills in 64th-inch sizes -- everything smaller than 3/8" rides on a 3/8" shank for strength, with stub and standard lengths up to 3/4" diameter.
- All sizes smaller than 3/8" are built on 3/8" shanks for strength; larger sizes step up through 1/2", 5/8", and 3/4" shanks
- Comes in 64th-inch sizes -- standard-length series run from 1/8" to 1/2" including half sizes, stub series from 1/8" to 3/4"
- Four sub-series: T12-201 (2 flute stub), T12-203 (2 flute standard), T12-403 (4 flute stub), T12-405 (4 flute standard), all square end with 30-degree helix
- Shanks come with flats; order any tool without flats by adding 'NF' to the end of the tool number
- Tolerances: cutting diameter +.001/-.000, shank diameter -.0001/-.0002, flute length +.030/-.000 (1/8" to 5/16") or +.060/-.000 (21/64" to 3/4"), OAL +/-.060
- Available uncoated or in TiN, TiCN, AlTiN, and DLC coatings
- 2 flute: slotting, side milling, helical interpolation, ramping, roughing through finishing; 4 flute: side milling, semi-finishing, finishing
- Materials: aluminum, copper, titanium, magnesium, cast iron, steel, stainless steel, brass, and wood; run dry, wet, cold air, or spray mist
From the RobbJack Applications Guide.
About this series
T12 Tuffy Grade Carbide End Mills
64th-size carbide end mills on strong 3/8" shanks
The T12 is a square-end Tuffy Grade carbide end mill offered in 2-flute (T12-201 stub, T12-203 standard) and 4-flute (T12-403/405) configurations. The series comes in 64th sizes, with all sizes smaller than 3/8" built on 3/8" shanks for strength. Cutting diameters range from 1/8" up to 3/4".
- 2 and 4 flute, square end
- 30 degree helix
- Flats
- Comes in 64th sizes
- All sizes smaller than 3/8" on 3/8" shanks for strength
- Cutting Dia. tolerance +.001/-.000
Available uncoated and in TiN, TiCN, AlTiN, and Diamond-Like Carbon (DLC) coatings
Headline spec
Cutting diameters 1/8"-3/4"; shanks from 3/8"; 2-1/2" to 3-1/2" OAL
Best for
- Slotting
- Side milling
- Helical interpolation
- Ramping
- Roughing
- Semi-finishing
- Finishing
- Aluminum, copper, titanium, magnesium, cast iron, steel, stainless steel, brass and wood
Specifications
US machining terms with ISO 13399 codes.
- Cutting DiameterDC
- 0.2188″
- Diameter ToleranceDC tol
- 0.0010/0.0000
- Max Cutting DiameterDCX
- 0.2198″
- Shank DiameterDMM
- 0.375″
- Length of Cut (LOC)APMX
- 0.3125″
- Overall Length (OAL)OAL
- 2.5″
- Number of FlutesNOF
- 2
- Helix AngleFHA
- 30°
- Helix HandFHH
- Right-hand
- Cut Direction
- Right-hand cut
- Shank Blend Angle
- 15°
- End Type
- Square End
- Center Cutting
- Yes — plunges
- Series
- T12-201 — 2 Flute Stub Length Tuffy Grade Carbide End Mill
Cuts these materials
Applications
See it run
Tolerances
| Type | Min | Max |
|---|---|---|
| Cutting Diameter | +0.001 | 0 |
| Length of Cut | +0.03 | 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 T12-201-07
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
$98.40
T12-201-07
Starting speeds & feeds for the T12-201-07
Dial in for your machine →RobbJack's tested starting numbers for this exact tool, from the same engine and the same default machine as the calculator: a 12,000 RPM / 400 IPM / 30 HP machining center, rigid setup, full-depth cut. A faster or smaller spindle changes the RPM and feed — enter yours in the calculator and it re-governs every number.
| Material | Operation | SFM | RPM | Feed (IPM) | Chip load / tooth | DOC (in) | WOC (in) |
|---|---|---|---|---|---|---|---|
| 6AL-4V Titanium | Roughing — full slot | 230 | 4,016 | 8.8 | .00110 | .1094 | .2188 |
| 6AL-4V Titanium | Finishing | 230 | 4,016 | 4 | .00050 | .2188 | .0055 |
| Gray Iron | Roughing — full slot | 500 | 8,729 | 48.9 | .00280 | .1094 | .2188 |
| Gray Iron | Finishing | 500 | 8,729 | 24.4 | .00140 | .2188 | .0055 |
| 4140 Steel | Roughing — full slot | 220 | 3,841 | 5.4 | .00070 | .1094 | .2188 |
| 4140 Steel | Finishing | 220 | 3,841 | 3.1 | .00040 | .2188 | .0055 |
Read before you run
Recommendations are computed starting points based on typical conditions — not guarantees of performance, tool life, or fitness for your application. Machining involves inherent risk: you are solely responsible for safe operation, for verifying every parameter against your machine, spindle, toolholding, workholding, and guarding limits, and for proving all parameters on a test cut before production. RobbJack Corporation assumes no liability for tool breakage, machine damage, scrapped parts, production loss, or personal injury arising from use of these recommendations. By using this calculator you accept RobbJack's Terms & Conditions.
More in the T12-201 series
Same series, different size — what changes from this tool is shown in red.
- T12-201-04$69.95Ø 0.125″LOC 0.25″2 FLOAL 2.5″
- T12-201-05$98.40Ø 0.1562″LOC 0.25″2 FLOAL 2.5″
- T12-201-06$98.40Ø 0.1875″2 FLLOC 0.3125″OAL 2.5″
- T12-201-08$98.40Ø 0.25″2 FLLOC 0.3125″OAL 2.5″
- T12-201-09$101.60Ø 0.2812″LOC 0.4375″2 FLOAL 2.5″
- T12-201-10$102.25Ø 0.3125″LOC 0.4375″2 FLOAL 2.5″
- T12-201-12$105.50Ø 0.375″LOC 0.5″2 FLOAL 2.5″
- T12-201-14$189.75Ø 0.4375″LOC 0.625″OAL 3″2 FL
- T12-201-16$189.65Ø 0.5″LOC 0.625″OAL 3″2 FL
- T12-201-20$326.25Ø 0.625″LOC 0.875″OAL 3.25″2 FL
- T12-201-24$502.65Ø 0.75″LOC 1″OAL 3.5″2 FL
- T12-203-04$73.10Ø 0.125″LOC 0.5″2 FLOAL 2.5″