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About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
High-Speed Steel Step Drill Bits
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Uncoated | ||||||||||
| 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8" | 0.8125", 0.875", 0.9375", 1", 1.0625", 1.125", 1.1875", 1.25", 1.3125", 1.375" | 2 1/8" | Hex | 3/8" | Standard | Black & Decker | 8841A34 | 0000000 | ||
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 5/16" | 1.3125" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Chicago-Latrobe | 2933A71 | 0000000 | ||
| 1 5/16" | 1.3125" | 6" | 2.1" | Reduced Round/3-Flat | 1/2" | Standard | Chicago-Latrobe | 29415A77 | 000000 | ||
| 1 5/16" | 1.3125" | 6" | 2.1" | Reduced Round | 3/4" | Standard | Dormer Pramet | 8772A16 | 000000 | ||
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 5/16" | 1.3125" | 14 1/4" | 6.65" | Morse Taper | Morse 4 | Standard | Chicago-Latrobe | 2929A463 | 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 5/16" | 1.3125" | 6" | 3" | Reduced Round | 3/4" | Split | Republic Drill | 8814A46 | 0000000 | ||
Smooth-Finish Drill Bits for Wood
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Shank Size | Drill Bit Point Type | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Uncoated | ||||||||||
Round Shank | ||||||||||
| 1 5/16" | 1.3125" | 3 1/2" | 3" | 13/32" | Standard | Alfa USA | 3216A48 | 000000 | ||
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 5/16" | 1.3125" | 6" | 4" | 1/2" | Standard | Stern | 2890A25 | 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.3125" | -0.001" to 0.001" | 1 5/16" | Hot Rolled | Annealed | 50,000 | Precision Ground | Rockwell B95 (Medium) | Rockwell C65 | ASTM A686 | 8890K102 | 000000 | 000000 | 0000000 |




























