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About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
High-Speed Steel Drill Bits
Shank | Each | Package | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Mfr. | Each | Pkg. Qty. | Pkg. | ||||
Jobbers' Length | ||||||||||||||
Black Oxide | ||||||||||||||
| 4.2 | 0.1654" | 75 | 34.6 | Round | 4.2 mm | Standard | Dormer Pramet | 2958A74 | 00000 | 10 | 2958A742 | 000000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||||
| 4.2 | 0.1654" | 75 | 36.7 | Round | 4.2 mm | Standard | Chicago-Latrobe | 8950A16 | 0000 | — | ——— | 0 | ||
Gold Oxide | ||||||||||||||
| 4.2 | 0.1654" | 83 | 49.2 | Round | 4.2 mm | Split | Viking Norseman Drill | 30565A263 | 0000 | 10 | 30565A43 | 00000 | ||
Short Length | ||||||||||||||
Black Oxide | ||||||||||||||
| 4.2 | 0.1654" | 55 | 13.5 | Round | 4.2 mm | Split | Dormer Pramet | 28255A35 | 0000 | — | ——— | 0 | ||
Titanium Nitride (TiN) Coated | ||||||||||||||
| 4.2 | 0.1654" | 56 | 22.1 | Round | 4.2 mm | Split | Dormer Pramet | 2979N2 | 0000 | — | ——— | 0 | ||
Extended Length | ||||||||||||||
Black Oxide | ||||||||||||||
| 4.2 | 0.1654" | 119 | 78 | Round | 4.2 mm | Standard | Dormer Pramet | 88455A118 | 00000 | — | ——— | 0 | ||
Uncoated | ||||||||||||||
| 4.2 | 0.1654" | 119 | 69.3 | Round | 4.2 mm | Standard | Dormer Pramet | 3083A146 | 0000 | — | ——— | 0 | ||
Cobalt Steel Drill Bits
Jobbers' Length Round Shank | Short Length Round Shank | Split |
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 4.2 | 0.1654" | 75 | 42.9 | Round | 4.2 mm | Split | Dormer Pramet | 5058N62 | 00000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | |||||||||||
| 4.2 | 0.1654" | 75 | 36.7 | Round | 4.2 mm | Split | Guhring | 2753A168 | 00000 | ||
Gold Oxide | |||||||||||
| 4.2 | 0.1654" | 75 | 34.6 | Round | 4.2 mm | Split | Dormer Pramet | 29355A66 | 0000 | ||
Short Length | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 4.2 | 0.1654" | 56 | 13.7 | Round | 4.2 mm | Split | Chicago-Latrobe | 2456N149 | 0000 | ||
Uncoated | |||||||||||
| 4.2 | 0.1654" | 56 | 13.7 | Round | 4.2 mm | Split | Chicago-Latrobe | 2456N122 | 0000 | ||
Drill Bit Guides
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For Drill Bit Size, mm | For Drill Bit Size Decimal Equiv. | Lg. | Wd. | Ht. | Material | Each | ||
|---|---|---|---|---|---|---|---|---|
| 3, 3.3, 3.5, 4, 4.2, 4.5, 5, 5.5, 6, 6.5, 6.8, 7, 7.5, 8, 8.5, 9, 9.5 | 0.1181", 0.1299", 0.1378", 0.1575", 0.1654", 0.1772", 0.1968", 0.2165", 0.2362", 0.2559", 0.2677", 0.2756", 0.2953", 0.315", 0.3346", 0.3543", 0.374" | 5 1/2" | 3/4" | 7/8" | Steel | 9550T15 | 000000 |
Smooth-Finish Carbide Drill Bits
Jobbers' Length Round Shank | Split |
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 4.2 | 0.1654" | 55 | 21.9 | Round | 4.2 mm | Split | Kyocera | 2783A22 | 000000 | ||
Carbide-Tipped Drill Bits
Chip-Clearing Cobalt Steel Drill Bits
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Flute Type | Type | Size, mm | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Uncoated | ||||||||||||
| 4.2 | 0.1654" | 76 | 41 | Parabolic | Round | 4.2 | Split | Viking Norseman Drill | 2771N51 | 00000 | ||
Chip-Clearing Cobalt Steel Drill Bits for Nickel and Stainless Steel
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Flute Type | Type | Size, mm | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Titanium Aluminum Nitride (TiAlN) Coated | ||||||||||||
| 4.2 | 0.1654" | 75 | 43 | Parabolic | Round | 4.2 | Split | Guhring | 3020A44 | 000000 | ||
Hex-Bit Taps
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Drill Bit | Plug Chamfer | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Thread Lg. | Overall Lg. | Thread Type | No. of Flutes | Size, mm | Decimal Size Equiv. | Shank Type | Hex Shank Size | Each | |||
High-Speed Steel | ||||||||||||
Uncoated | ||||||||||||
| M5 × 0.8 mm | 5/8" | 1 7/16" | Metric | 3 | 4.2 | 0.1653" | Hex | 1/4" | 1021N24 | 000000 | ||
Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers
Thread | Drill Bit | Plug Chamfer | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Lg. | Overall Lg. | Size, mm | Decimal Size Equiv. | Point Angle | Flute Type | No. of Flutes | Thread Type | Pitch Dia. Limit | Hex Shank Size | Each | |||
Uncoated High-Speed Steel | ||||||||||||||
| M5 × 0.8 mm | 5/8" | 3 3/8" | 4.2 | 0.1653" | 118° | Spiral | 2 | Metric | D4 | 1/4" | 3464A52 | 000000 | ||
Titanium Nitride (TiN)-Coated High-Speed Steel | ||||||||||||||
| M5 × 0.8 mm | 5/8" | 3 3/8" | 4.2 | 0.1653" | 118° | Spiral | 2 | Metric | D4 | 1/4" | 3464A127 | 00000 | ||
Chip-Clearing High-Speed Steel Drill Bits
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Flute Type | Type | Size, mm | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 4.2 | 0.1654" | 75 | 34.6 | High Helix | Round | 4.2 | Split | Dormer Pramet | 30055A61 | 00000 | ||
Drill Taps
Spiral Flute |
Thread | Drill Bit | Plug Chamfer | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Lg. | Overall Lg. | Size, mm | Decimal Size Equiv. | Point Angle | Flute Type | No. of Flutes | Thread Type | Pitch Dia. Limit | Each | |||
Uncoated High-Speed Steel | |||||||||||||
| M5 × 0.8 mm | 5/8" | 2 3/8" | 4.2 | 0.1653" | 110° | Spiral | 2 | Metric | D4 | 2748A63 | 000000 | ||
Titanium Nitride (TiN)-Coated High-Speed Steel | |||||||||||||
| M5 × 0.8 mm | 5/8" | 2 3/8" | 4.2 | 0.1653" | 118° | Spiral | 2 | Metric | D4 | 2748A94 | 00000 | ||
Left-Hand High-Speed Steel Drill Bits
Shank | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Mfr. | 1-9 | 10-Up | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 4.2 | 0.1654" | 75 | 34.6 | Round | 4.2 mm | Standard | Dormer Pramet | 29855A57 | 000000 | 000000 | ||
Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods
Dia., mm | Dia. Tolerance, mm | Drill Bit Size, mm | Lg. | Yield Strength | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|
| 4.2 | -0.005 to 0 | 4.2 | 3 1/4" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A283 | 00000 |
Helical Threaded Inserts with Installation Tools
Thread Size | Installed Lg., mm | Drill Bit Size, mm | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |||
|---|---|---|---|---|---|---|---|---|---|
Pronged | |||||||||
18-8 Stainless Steel | |||||||||
| M4 x 0.7 mm | 4 | 4.2 | 0.172" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91732A421 | 000000 | ||
| M4 x 0.7 mm | 6 | 4.2 | 0.172" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91732A944 | 00000 | ||
| M4 x 0.7 mm | 8 | 4.2 | 0.172" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91732A431 | 00000 | ||
| M4 x 0.7 mm | 10 | 4.2 | 0.172" | 10 | Drill Bit Installation Tool Through-Hole Tap | 98356A154 | 00000 | ||
| M4 x 0.7 mm | 12 | 4.2 | 0.172" | 10 | Drill Bit Installation Tool Through-Hole Tap | 98356A155 | 00000 | ||






























