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About Tool Steel
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Drill Bits






These jobbers'-length bits have the rigidity and length required for most applications.
Black-oxide and black-and-gold-oxide drill bits produce less friction than uncoated drill bits.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and oxide-coated drill bits.
Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | Pkg. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
17/64" | 0.2656" | 4 1/8" | 2.47" | Round | 17/64" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 | 12 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
17/64" | 0.2656" | 4 1/8" | 2.47" | Round | 17/64" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 | 12 | 000000000 | 00000 |
Titanium-Aluminum-Nitride (TiAlN) Coated High-Speed Steel | |||||||||||||
17/64" | 0.2656" | 4 1/8" | 2.47" | Round | 17/64" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
17/64" | 0.2656" | 4 1/8" | 2.47" | Round | 17/64" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 | 12 | 00000000 | 00000 |
Letter | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
F | 0.257" | 4 1/8" | 2.49" | Round | 0.257" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
G | 0.261" | 4 1/8" | 2.48" | Round | 0.261" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
H | 0.266" | 4 1/8" | 2.47" | Round | 0.266" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
I | 0.272" | 4 1/8" | 2.46" | Round | 0.272" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | __ | 000000 | 00 |
J | 0.277" | 4 1/8" | 2.46" | Round | 0.277" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | __ | 000000 | 00 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
F | 0.257" | 4 1/8" | 2.49" | Round | 0.257" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 | __ | 000000 | 00 |
G | 0.261" | 4 1/8" | 2.48" | Round | 0.261" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
H | 0.266" | 4 1/8" | 2.47" | Round | 0.266" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
I | 0.272" | 4 1/8" | 2.46" | Round | 0.272" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
J | 0.277" | 4 1/8" | 2.46" | Round | 0.277" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
Titanium-Aluminum-Nitride (TiAlN) Coated High-Speed Steel | |||||||||||||
F | 0.257" | 4 1/8" | 2.49" | Round | 0.257" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
G | 0.261" | 4 1/8" | 2.48" | Round | 0.261" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
H | 0.266" | 4 1/8" | 2.47" | Round | 0.266" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
I | 0.272" | 4 1/8" | 2.46" | Round | 0.272" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
J | 0.277" | 4 1/8" | 2.46" | Round | 0.277" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
F | 0.257" | 4 1/8" | 2.49" | Round | 0.257" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 12 | 00000000 | 00000 |
G | 0.261" | 4 1/8" | 2.48" | Round | 0.261" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 12 | 00000000 | 00000 |
H | 0.266" | 4 1/8" | 2.47" | Round | 0.266" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
I | 0.272" | 4 1/8" | 2.46" | Round | 0.272" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 12 | 00000000 | 00000 |
J | 0.277" | 4 1/8" | 2.46" | Round | 0.277" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Short-Length Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.
Black-oxide drill bits produce less friction than uncoated drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
37/64" | 0.5781" | 4 1/8" | 1.75" | Round | 37/64" | Standard | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 000000 |
19/32" | 0.5938" | 4 1/8" | 1.73" | Round | 19/32" | Standard | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 00000 |
Maintenance-Length Drill Bits

Also known as mechanics’ bits, these are shorter and more rigid than jobbers' bits but longer than short-length bits. A split point keeps the bit centered without a pilot hole.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
For technical drawings and 3-D models, click on a part number.
Shank | Each | Pkg. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Features | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Black-and-Gold-Oxide High-Speed Steel | |||||||||||||
21/64" | 0.3281" | 4 1/8" | 2.48" | Round | 21/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 000000 |
11/32" | 0.3438" | 4 1/8" | 2.5" | Round | 11/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
Chip-Clearing Drill Bits




These jobbers'-length bits have the rigidity and length required for most applications. The flutes are designed to lift chips out of the hole, reducing clogging and improving coolant flow.
Parabolic spiral flute drill bits have wider flutes for more efficient chip evacuation than spiral-flute bits.
Black-oxide drill bits produce less friction than uncoated drill bits.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Inch—Parabolic Spiral Flute | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.34" | Round | 17/64" | Split | Steel, Iron, Stainless Steel | __ | 00000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.34" | Round | 17/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.34" | Round | 17/64" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 0000 |
Inch—Spiral Flute | ||||||||||
Uncoated High-Speed Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.47" | Round | 17/64" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 0000 |
Drill Bits for Precise Holes

Specially-designed flutes keep these bits centered as they drill, resulting in straighter, rounder holes with tighter tolerances. They are titanium nitride (TiN) coated for wear and temperature resistance. Also known as double-margin drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Depth | Type | Size | Point Style | For Use On | Each | |
Inch—Jobbers' Length | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
17/64" | 0.2656" | 4 1/8" | 2.87" | Round | 17/64" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
Cobalt Steel Drill Bits


These jobbers'-length bits have the rigidity and length required for most applications. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Uncoated Cobalt Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.5" | Round | 17/64" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 2.88" | Round | 17/64" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
Letter | ||||||||||
Uncoated Cobalt Steel | ||||||||||
F | 0.257" | 4 1/8" | 2.49" | Round | 0.257" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
G | 0.261" | 4 1/8" | 2.48" | Round | 0.261" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
H | 0.266" | 4 1/8" | 2.47" | Round | 0.266" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
I | 0.272" | 4 1/8" | 2.46" | Round | 0.272" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
J | 0.277" | 4 1/8" | 2.46" | Round | 0.277" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
F | 0.257" | 4 1/8" | 2.88" | Round | 0.257" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
G | 0.261" | 4 1/8" | 2.88" | Round | 0.261" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
H | 0.266" | 4 1/8" | 2.88" | Round | 0.266" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
I | 0.272" | 4 1/8" | 2.88" | Round | 0.272" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
J | 0.277" | 4 1/8" | 2.88" | Round | 0.277" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
Short-Flute Cobalt Steel Drill Bits

The short flutes on these jobbers'-length bits provide increased rigidity for drilling straighter holes. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Inch | ||||||||||
Black-Oxide Cobalt Steel | ||||||||||
17/64" | 0.2656" | 4 1/8" | 1.04" | Round | 17/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 00000 |
Cobalt Steel Hex-Shank Drill Bits

In addition to resisting heat and wear better than high-speed steel drill bits, these can also run up to 25% faster and have a longer tool life. Insert them into power screwdrivers, impact drivers, and other tools that accept hex shanks. The flat surfaces on the hex shank allow tool chucks to grip these bits more securely than those with a round shank. A split point keeps the bits centered without a pilot hole.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Length | Maximum Drilling Depth | Type | Size | Point Style | For Use On | Each | |
Uncoated Cobalt Steel | |||||||||
17/64" | 0.2656" | 4 1/8" | 1.06" | Hex | 17/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
Drill Bits for Precise Holes in Wood

Three sharp points allow these bits to drill accurate straight and overlapping holes, even across the grain. The center guide point prevents the bit from wandering. Also known as brad-point bits.
High-speed steel drill bits are stronger and more wear resistant than steel drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
17/64" | 0.2656" | 4 1/8" | 2.88" | Round | 1/4" | Brad | 00000000 | 00000 |
Drill Bits for Plastic

The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic. These bits are jobbers' length and have the rigidity and length required for most applications.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
17/64" | 0.2656" | 4 1/8" | 2.88" | Round | 17/64" | Standard | 00000000 | 000000 |
Letter | ||||||||
Uncoated High-Speed Steel | ||||||||
F | 0.257" | 4 1/8" | 2.12" | Round | 0.257" | Standard | 000000000 | 0000 |
G | 0.261" | 4 1/8" | 2.12" | Round | 0.261" | Standard | 000000000 | 0000 |
H | 0.266" | 4 1/8" | 2.12" | Round | 0.266" | Standard | 000000000 | 0000 |
I | 0.272" | 4 1/8" | 2.12" | Round | 0.272" | Standard | 000000000 | 0000 |
J | 0.277" | 4 1/8" | 2.12" | Round | 0.277" | Standard | 000000000 | 0000 |
Drill Bits for Aluminum, Brass, and Bronze

Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits. They are jobbers' length and have the rigidity and length required for most applications.
For technical drawings and 3-D models, click on a part number.
Shank | Each | ||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | 1-11 | 12-Up | |
Inch—Spiral Flute | |||||||||
Uncoated High-Speed Steel | |||||||||
17/64" | 0.2656" | 4 1/8" | 2.34" | Round | 17/64" | Standard | 00000000 | 00000 | 00000 |
High-Speed Steel Left-Hand Drill Bits


Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. These bits are jobbers' length and have the rigidity and length required for most applications.
Black-oxide and black-and-gold-oxide drill bits produce less friction than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-and-Gold-Oxide High-Speed Steel | |||||||||
17/64" | 0.2656" | 4 1/8" | 2.75" | Round | 17/64" | Split | Steel, Iron, Stainless Steel | 00000000 | 000000 |
Uncoated High-Speed Steel | |||||||||
17/64" | 0.2656" | 4 1/8" | 2.34" | Round | 17/64" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
Cobalt Steel Left-Hand Drill Bits



With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life. Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. These bits are maintenance length, also known as mechanics’ length. They are shorter and more rigid than jobbers’ bits but longer than short-length bits. The split point keeps the bit centered without a pilot hole.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
3/8" | 0.375" | 4 1/8" | 2.06" | Round | 3/8" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | |||||||||
3/8" | 0.375" | 4 1/8" | 2.06" | Round | 3/8" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Fiberglass | 0000000 | 00000 |
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel | |||||||||
3/8" | 0.375" | 4 1/8" | 2.06" | Round | 3/8" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 |
Oversized Long-Life Counterboring Drill Bits

These counterbores are often used when screw holes in sheets or layers are misaligned. Also known as subland drill bits, they last longer than standard counterboring drill bits because the diameter stays the same after sharpening. They drill and counterbore at the same time. After drilling and counterboring, tap the hole and install your fastener. The diameters account for the 1/32” or 1/64” oversized diameter rating.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | ||||||||
---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Number of Flutes | Point Angle | For Use On | Each | |
Uncoated High-Speed Steel | |||||||||
1/64" Oversized | |||||||||
3/8" | 0.578" | 0.391" | 3/4" | 4 1/8" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
1/32" Oversized | |||||||||
3/8" | 0.594" | 0.406" | 3/4" | 4 1/8" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
Slotted Bits with Screw Guide


Remove screws in hard-to-reach places. A spring-loaded sleeve guides bits onto the screw head and keeps them from slipping out. These bits have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.
For technical drawings and 3-D models, click on a part number.
Overall | ||||||
---|---|---|---|---|---|---|
Size | For Screw Size | Lg. | Dia. | Material | Each | |
1/4" Hex Shank Size for Power Tools | ||||||
0.457" | No. 14, No. 16 | 4 1/8" | 0.688" | Steel | 0000000 | 00000 |
Tight-Clearance Ratcheting Bit Screwdrivers

A ratchet mechanism allows you to drive fasteners when there's little space to move the handle.
Style A have an offset head to access screws in obstructed areas. A retaining ring holds the bit, and the plastic handle provides comfort and a secure grip.
Material | ||||||||
---|---|---|---|---|---|---|---|---|
Style | For Bit Hex Shank Size | Overall Lg. | Offset Angle | Bit-Holding Mechanism | Shaft | Handle | Each | |
A | 1/4" | 4 1/8" | 10° | Retaining Ring | Chrome-Plated Steel | Plastic | 00000000 | 000000 |
Hardened Undersized High-Speed M2 Tool Steel Rods

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Drill Bit Size | Lg. | Mechanical Finish | Straightness Tolerance | Each | |
0.257" | -0.0002" to 0" | F | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.261" | -0.0002" to 0" | G | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.2656" | -0.0002" to 0" | 17/64" | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.266" | -0.0002" to 0" | H | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.272" | -0.0002" to 0" | I | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.277" | -0.0002" to 0" | J | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.4mm | -0.0050mm to 0.0000mm | 6.4 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.5mm | -0.0050mm to 0.0000mm | 6.5 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.6mm | -0.0050mm to 0.0000mm | 6.6 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.7mm | -0.0050mm to 0.0000mm | 6.7 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.8mm | -0.0050mm to 0.0000mm | 6.8 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
6.9mm | -0.0050mm to 0.0000mm | 6.9 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
7mm | -0.0050mm to 0.0000mm | 7 mm | 4 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
Hardened Oversized High-Speed M2 Tool Steel Rods

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Reamer Size | Lg. | Lg. Tolerance | Mechanical Finish | Straightness Tolerance | Each | |
0.257" | 0" to 0.0002" | F | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.261" | 0" to 0.0002" | G | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.2656" | 0" to 0.0002" | 17/64" | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.266" | 0" to 0.0002" | H | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.272" | 0" to 0.0002" | I | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.277" | 0" to 0.0002" | J | 4 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
Hardened High-Speed M42 Tool Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C65 (Very Hard)
Also known as cobalt steel, this M42 tool steel maintains its hardness in high-speed cutting applications that generate intense heat. Use it to make tools for cutting extremely hard materials.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Lg. | Mechanical Finish | Each | |
17/64" | -0.0002" to 0" | 4 1/8" | Precision Ground | 0000000 | 000000 |