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Product Specifications:
| Item | Ball End Mill |
| Chip Breaker | No |
| Coolant Fed | Non Coolant Through |
| Cutting Direction | Right Hand |
| Cutting Length | 3/4" |
| Cutting Type | Center Cutting |
| Drilling Tool Configuration | Individual |
| End Mill Application | Finishing, Roughing |
| End Mill Cutting Type | Center Cutting |
| End Mill Style | Ball Nose |
| End Type | Single End |
| Finish | Bright Uncoated |
| Finish-machining | Bright (Uncoated) |
| Helix Angle | 30° |
| List Number | 251 |
| Material | Carbide |
| Material-machining | Carbide |
| Measurement System | Fractional Inch |
| Milling Dia. | 1/16" |
| Neck Dia. | 0" |
| Neck Length | 0" |
| No. Of Flutes | 4 |
| Overall Length | 2 1/2" |
| Primary Material Application | Aluminum, Brass, Bronze, Cast Iron, Copper, Hardened Steel, Stainless Steel, Steel |
| Primary Material Application Iso Code | H, K, M, N, P |
| Shank Dia. | 1/8" |
| Shank Type | Straight |
| Shank Type-machining | Straight |
| Single End/double End | Single End |
| System Of Measurement | Imperial |
Shipping Info:
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
Product Variants
| Product | Model | Cutting Length | Finish | Milling Dia. | Shank Dia. | Primary Material Application Iso Code | Shank Type-machining | Finish-machining | List Number | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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221-001395 | 4 mm | Bright Uncoated | 1 mm | 3 mm | H, K, M, N, P | Weldon Flat | Bright (Uncoated) | 221 | €19.46 | |
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221-001400B | 5.5 mm | Aluminum Titanium Nitride | 1 mm | 3 mm | H, K, M, N, P | Weldon Flat | AlTiN | 221 | €28.27 | |
![]() |
221-001400A | 5.5 mm | Tin | 1 mm | 3 mm | K, M, N, P | Weldon Flat | Tin | 221 | €23.24 | |
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221-001400C | 5.5 mm | Titanium Carbonitride | 1 mm | 3 mm | H, K, M, N, P | Weldon Flat | TiCN | 221 | €24.29 | |
![]() |
221-001410 | 5 mm | Bright Uncoated | 1.5 mm | 3 mm | H, K, M, N, P | Weldon Flat | Bright (Uncoated) | 221 | €23.77 | |
![]() |
221-001410B | 5 mm | Aluminum Titanium Nitride | - | 3 mm | - | - | - | 221 | €29.99 | |
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221-001410A | 5 mm | Tin | 1.5 mm | 3 mm | K, M, N, P | Weldon Flat | Tin | 221 | €21.25 |
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Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
GRAINGER 251-002121 Ball End Mill, 4 Flutes, 1/16 Inch Milling Dia
€91.19 /unit




