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About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
Reduced-Shank High-Speed Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 1 9/16" | 1.5625" | 6" | 2.1" | Reduced Round | 3/4" | Standard | Dormer Pramet | 8772A21 | 0000000 | ||
High-Speed Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 1 9/16" | 1.5625" | 16 5/8" | 7.28" | Morse Taper | Morse 5 | Standard | Chicago-Latrobe | 2929A612 | 0000000 | ||
Reduced-Shank Cobalt Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 1 9/16" | 1.5625" | 6" | 3" | Reduced Round | 3/4" | Split | Republic Drill | 8814A54 | 0000000 | ||
Fast-Cutting Smooth-Finish Drill Bits for Wood
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Round Shank Standard Point |
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Shank Size | Drill Bit Point Type | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Uncoated | ||||||||||
Round Shank | ||||||||||
| 1 9/16" | 1.5625" | 6" | 4" | 1/2" | Standard | Stern | 2890A29 | 000000 | ||
Tight-Tolerance Water-Hardening W1 Tool Steel Rods
Dia. | Dia. Tolerance | Drill Bit Size | Fabrication | Heat Treatment | Yield Strength, psi | Mechanical Finish | Hardness | Max. Hardness After Heat Treatment | Specs. Met | 1 ft. Long | 3 ft. Long | 6 ft. Long | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.5625" | -0.001" to 0.001" | 1 9/16" | Hot Rolled | Annealed | 50,000 | Precision Ground | Rockwell B95 (Medium) | Rockwell C65 | ASTM A686 | 8890K201 | 000000 | 0000000 | 0000000 |



























