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Thread Size
Arbor Hole
DFARS Specialty Metals
Face Mill Arbors
Shank Thread | Head | Nose | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Arbor Hole Dia. | Size | Gender | Dia. | Lg. | Dia | Lg. | For Keyway Wd. | Material | Fabrication | Each | ||
| 1/2" | 7/16"-20 | Female | 1 3/8" | 1" | 1/2" | 9/16" | 1/4" | Steel | Heat Treated | 8778A11 | 0000000 | |
| 3/4" | 7/16"-20 | Female | 2" | 1" | 3/4" | 11/16" | 5/16" | Steel | Heat Treated | 8778A12 | 000000 | |
| 1" | 7/16"-20 | Female | 2.38" | 1" | 1" | 11/16" | 3/8" | Steel | Heat Treated | 8778A13 | 000000 | |
| 1 1/4" | 7/16"-20 | Female | 2.88" | 1" | 1 1/4" | 11/16" | 1/2" | Steel | Heat Treated | 8778A14 | 000000 | |
| 1 1/2" | 7/16"-20 | Female | 3 1/2" | 1 3/4" | 1 1/2" | 1" | 5/8" | Steel | Heat Treated | 8778A15 | 000000 | |
R8 Taper Arbors for Slitting Saws
For Max. Cutter | Shank Thread | Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Arbor Hole Dia. | Dia. | Thk. | Size | Gender | Dia. | Lg. | Overall Lg. | Material | Includes | Each | ||
| 1/2", 5/8", 3/4", 7/8", 1" | 4" | 3/16" | 7/16"-20 | Female | 1 1/4" | 3/8" | 4 13/16" | Steel | Hex Key | 2807A33 | 000000 | |
R8 Taper End Mill Holders
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For End Mill Shank Dia. | For No. of End Mill Milling Ends | Internal Thread Size | Dia. | Lg. | Material | Fabrication | Includes | Each | ||
| 1/8" | 1 | 7/16"-20 | 3/4" | 1 3/8" | Steel | Heat Treated | Set Screws | 8781A33 | 000000 | |
| 3/16" | 1, 2 | 7/16"-20 | 3/4" | 1 3/8" | Steel | Heat Treated | Set Screws | 8781A21 | 00000 | |
| 1/4" | 1, 2 | 7/16"-20 | 51/64" | 1 3/8" | Steel | Heat Treated | Set Screws | 8781A32 | 00000 | |
| 5/16" | 1 | 7/16"-20 | 7/8" | 1 3/4" | Steel | Heat Treated | Set Screws | 8781A34 | 00000 | |
| 3/8" | 1, 2 | 7/16"-20 | 1" | 1 3/8" | Steel | Heat Treated | Set Screws | 8781A22 | 00000 | |
| 1/2" | 1 | 7/16"-20 | 1 3/8" | 1 3/8" | Steel | Heat Treated | Set Screws | 8781A23 | 00000 | |
| 5/8" | 1 | 7/16"-20 | 1 21/32" | 1 1/2" | Steel | Heat Treated | Set Screws | 8781A24 | 00000 | |
| 3/4" | 1 | 7/16"-20 | 1 57/64" | 2 3/8" | Steel | Heat Treated | Set Screws | 8781A25 | 000000 | |
| 7/8" | 1 | 7/16"-20 | 2" | 2 3/4" | Steel | Heat Treated | Set Screws | 8781A26 | 000000 | |
| 1" | 1 | 7/16"-20 | 2 3/8" | 3 1/4" | Steel | Heat Treated | Set Screws | 8781A27 | 000000 | |
| 1 1/4" | 1 | 7/16"-20 | 2 1/2" | 3 1/4" | Steel | Heat Treated | Set Screws | 8781A28 | 000000 | |
| 1 1/2" | 1 | 7/16"-20 | 3" | 3 3/4" | Steel | Heat Treated | Set Screws | 8781A29 | 000000 | |
R8 Taper to Morse Taper Shank Adapters
Drill Chucks with R8 Taper Integral Arbor
For Bit Shank Size | Max. No-Load Rotational Speed, rpm | Total Indicated Runout (TIR) Accuracy | Jaw Material | Body Material | Projection | Max. Body Dia. | For Tool Drive Direction | Mfr. Model No. | Features | Includes | Certificate Type | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Keyless Chuck | |||||||||||||||
McMaster-Carr Approved | |||||||||||||||
| 1/32" to 1/2" 1 mm to 13 mm | 10,000 | 0.0016" | Hardened Steel | Hardened Steel | 3 1/4" | 1.89" | Clockwise | — | Wrench Flats | Spanner Wrench | Accuracy Certificate | 9790N11 | 0000000 | ||
| 1/8" to 5/8" 3 mm to 16 mm | 8,000 | 0.0016" | Hardened Steel | Hardened Steel | 3 7/16" | 2.13" | Clockwise | — | Wrench Flats | Spanner Wrench | Accuracy Certificate | 9790N12 | 000000 | ||
Albrecht | |||||||||||||||
| 1/32" to 1/2" 1 mm to 13 mm | 7,000 | 0.0019" | Hardened Steel | Hardened Steel | 3 5/16" | 2" | Clockwise | CP130-R8 | — | — | — | 30075A48 | 000000 | ||
| 1/8" to 5/8" 3 mm to 16 mm | 4,000 | 0.002" | Hardened Steel | Hardened Steel | 3 7/16" | 2.25" | Clockwise | CP160-R8 | — | — | — | 30075A58 | 000000 | ||
Keyed Chuck | |||||||||||||||
McMaster-Carr Approved | |||||||||||||||
| 1/32" to 1/2" 1 mm to 13 mm | 8,000 | 0.0008" | Hardened Steel | Hardened Steel | 3 3/8" | 2.13" | Clockwise, Counterclockwise | — | — | Key | Accuracy Certificate | 9790N13 | 000000 | ||
| 1/8" to 5/8" 3 mm to 16 mm | 8,000 | 0.0008" | Hardened Steel | Hardened Steel | 3 1/2" | 2.25" | Clockwise, Counterclockwise | — | — | Key | Accuracy Certificate | 9790N14 | 000000 | ||
Quick-Change Milling Machine Tool Holders
R8 Body
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R8 Taper Shank Thread | |||||||
|---|---|---|---|---|---|---|---|
Total Indicated Runout (TIR) Accuracy | Gender | Size | Spindle Overhang | Material | Each | ||
| 0.0005" | Female | 7/16"-20 | 1 1/8" | Steel | 2012N11 | 000000000 | |
Boring Milling Machine Tool Holders
Holder with R8 Taper Shank
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Adjustment Dial |
For Tool Bit Shank Dia. | Shank Lg. | Head Dia. | Offset Travel | Vert. Hole Spacing | Overall Lg. | Material | Features | Each | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8" | 4" | 2" | 0.75" | 0.625" | 6 7/16" | Steel | Adjustment Dial | 6380N105 | 0000000 | |
| 1/2" | 4" | 2 1/2" | 0.75" | 0.75" | 7 3/16" | Steel | Adjustment Dial | 6380N106 | 000000 | |
| 5/8" | 4" | 2 1/2" | 0.75" | 0.75" | 7 3/16" | Steel | Adjustment Dial | 6380N107 | 000000 | |
| 3/4" | 4" | 3" | 1.25" | 0.938" | 7 1/2" | Steel | Adjustment Dial | 6380N108 | 000000 |
R8 Taper Collet Chucks
Milling Machine Collet Chucks | Wrenches | Replacement Nuts | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Collet Type | For Bit Shank Size | Projection | Total Indicated Runout (TIR) Accuracy | Material | Collet Nut Type | Features | Each | Each | Each | |||||
| ER-16 | 0.019" to 0.406" | 1.25" | 0.0001" | Hardened Alloy Steel | Hex Nut | Collet Stop Screw | 9523N13 | 0000000 | 3215A441 | 000000 | 9502N33 | 000000 | ||
| ER-20 | 0.039" to 0.551" | 2" | 0.0001" | Hardened Alloy Steel | Hex Nut | Collet Stop Screw | 9523N14 | 000000 | 1721N15 | 00000 | 9502N34 | 00000 | ||
| ER-25 | 0.039" to 0.629" | 2.5" | 0.0001" | Hardened Alloy Steel | Slotted Nut | Collet Stop Screw | 9523N15 | 000000 | 5699N128 | 00000 | 9502N35 | 00000 | ||
| ER-32 | 0.078" to 0.787" | 2.25" | 0.0002" | Hardened Alloy Steel | Slotted Nut | — | 9523N11 | 000000 | 3321A32 | 00000 | 9502N15 | 00000 | ||
| ER-40 | 0.118" to 1.024" | 2.375" | 0.0002" | Hardened Alloy Steel | Slotted Nut | — | 9523N12 | 000000 | 32605A95 | 00000 | 9502N16 | 00000 | ||
| TG-100 | 0.0469" to 1" | 3.25" | 0.0001" | Hardened Alloy Steel | Slotted Nut | Collet Stop Screw | 9523N16 | 000000 | 32605A95 | 00000 | 9531N12 | 00000 | ||









































