Genius Tools Star Screwdriver Bit T-40 Size 1/4 Inch Hex Shank 30mm Length Durable Construction – 6140
$1.53
sku
6140
- Genius Tools 6140 T-40 star screwdriver bit fits Torx-style fasteners and uses a 1/4 inch hex shank for compatible bit holders.
- 30mm overall length provides a compact bit profile, helping reduce overhang for more controlled driving in limited-access work areas.
- T-40 sizing is clearly matched to the required star fastener size, supporting accurate tool selection before installation or removal.
- High Speed Steel construction and heat treatment support strength, durability, anti-corrosive properties, exterior wear resistance, and a strong inner core.
- Permanently stamped size marking makes the T-40 bit easier to identify quickly and keep organized with similar screwdriver bits.
Also Available in Other Sizes (58) Same tool, different size Show all 58 sizes Hide sizes
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Size T-6 · Shank 1/4" · Length 30mm
$1.25
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Size T-6 · Shank 1/4" · Length 56mm
$2.71
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Size T-7 · Shank 1/4" · Length 30mm
$1.43
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Size T-7 · Shank 1/4" · Length 56mm
$3.12
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Size T-8 · Shank 1/4" · Length 30mm
$1.43
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Size T-8 · Shank 1/4" · Length 56mm
$2.71
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Size T-9 · Shank 1/4" · Length 30mm
$1.25
-
Size T-9 · Shank 1/4" · Length 56mm
$3.12
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Size T-10 · Shank 1/4" · Length 30mm
$1.43
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Size T-10 · Shank 1/4" · Length 56mm
$3.12
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Size T-10 · Shank 5/16" · Length 30mm
$2.08
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Size T-15 · Shank 1/4" · Length 30mm
$1.43
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Size T-15 · Shank 1/4" · Length 56mm
$3.12
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Size T-15 · Shank 5/16" · Length 30mm
$2.40
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Size T-15 · Shank 10mm · Length 30mm
Special Price $1.24 Regular Price $1.50
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Size T-15 · Shank 10mm · Length 75mm
Special Price $2.11 Regular Price $2.55
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Size T-20 · Shank 1/4" · Length 30mm
$1.43
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Size T-20 · Shank 1/4" · Length 56mm
$3.12
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Size T-20 · Shank 5/16" · Length 30mm
$2.08
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Size T-20 · Shank 10mm · Length 30mm
Special Price $1.41 Regular Price $1.70
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Size T-20 · Shank 10mm · Length 75mm
Special Price $2.13 Regular Price $2.57
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Size T-25 · Shank 1/4" · Length 30mm
$1.43
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Size T-25 · Shank 1/4" · Length 56mm
$2.71
-
Size T-25 · Shank 5/16" · Length 30mm
$2.08
-
Size T-25 · Shank 10mm · Length 30mm
Special Price $1.24 Regular Price $1.50
-
Size T-25 · Shank 10mm · Length 75mm
Special Price $2.24 Regular Price $2.70
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Size T-27 · Shank 1/4" · Length 30mm
$1.43
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Size T-27 · Shank 1/4" · Length 56mm
$2.71
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Size T-27 · Shank 5/16" · Length 30mm
$2.08
-
Size T-27 · Shank 10mm · Length 30mm
Special Price $0.03 Regular Price $0.04
-
Size T-27 · Shank 10mm · Length 75mm
Special Price $2.11 Regular Price $2.55
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Size T-30 · Shank 1/4" · Length 30mm
$1.43
-
Size T-30 · Shank 1/4" · Length 56mm
$2.71
-
Size T-30 · Shank 5/16" · Length 30mm
$2.08
-
Size T-30 · Shank 10mm · Length 30mm
Special Price $1.41 Regular Price $1.70
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Size T-30 · Shank 10mm · Length 75mm
Special Price $2.24 Regular Price $2.70
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Size T-40 · Shank 1/4" · Length 56mm
$2.91
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Size T-40 · Shank 5/16" · Length 30mm
$2.56
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Size T-40 · Shank 10mm · Length 30mm
Special Price $1.41 Regular Price $1.70
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Size T-40 · Shank 10mm · Length 75mm
Special Price $2.13 Regular Price $2.57
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Size T-45 · Shank 5/16" · Length 30mm
$2.23
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Size T-45 · Shank 5/16" · Length 56mm
$3.89
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Size T-45 · Shank 10mm · Length 30mm
Special Price $1.33 Regular Price $1.61
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Size T-45 · Shank 10mm · Length 75mm
Special Price $2.13 Regular Price $2.57
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Size T-50 · Shank 5/16" · Length 30mm
$2.23
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Size T-50 · Shank 5/16" · Length 56mm
$4.48
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Size T-50 · Shank 10mm · Length 30mm
Special Price $1.33 Regular Price $1.61
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Size T-50 · Shank 10mm · Length 75mm
Special Price $2.24 Regular Price $2.70
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Size T-55 · Shank 10mm · Length 30mm
$3.62
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Size T-55 · Shank 10mm · Length 56mm
$6.12
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Size T-55 · Shank 10mm · Length 75mm
Special Price $2.24 Regular Price $2.70
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Size T-55 · Shank 14mm · Length 115mm
Special Price $0.08 Regular Price $13.89
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Size T-60 · Shank 12mm · Length 36mm
$7.24
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Size T-60 · Shank 12mm · Length 56mm
$7.78
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Size T-60 · Shank 14mm · Length 75mm
Special Price $0.16 Regular Price $0.19
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Size T-70 · Shank 14mm · Length 36mm
$7.75
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Size T-70 · Shank 14mm · Length 56mm
$8.22
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Size T-70 · Shank 14mm · Length 75mm
Special Price $0.16 Regular Price $0.19
Also Available in These Sets (10) This item is included in each set below Show all 10 sets Hide sets
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Star Screwdriver Bit Set 11 Piece, Precision S2 Steel, 1/4 Inch Drive,
$6.67
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Star Screwdriver Bit Set 25 Piece S2 Steel Assorted Sizes Precision Drive
$31.33
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Ratcheting Screwdriver and Bit Set 37 Piece Multi-Bit Precision Drive Ergonomic Handle Versatile Hand Tool Kit
$42.23
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Ratcheting Screwdriver and Bit Set 37 Piece SAE Multi-Bit Precision Drive Ergonomic Handle
Special Price $55.91 Regular Price $70.45
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Screwdriver Bit Set 43 Piece 1/4 Inch Hex Shank Assorted Bits Precision S2 Steel Drive
$35.22
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Screwdriver Bit Set 52 Piece Metric OMNIDRIVE Versatile
$68.83
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Socket and Bit Set 54 Piece Metric 1/4 Inch & 1/2 Inch Drive Comprehensive Hand Tool Kit
$285.91
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Screwdriver Bit Set 75 Piece Metric Extra Complete Assorted Drive Sizes
$90.10
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Screwdriver Bit Set 76 Piece Metric and SAE Assortment
$122.59
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Screwdriver Bit Set 78 Piece SAE Extra Complete Assortment Precision Drive
$102.43
Genius Tools Star Screwdriver Bit T-40 Size 1/4 Inch Hex Shank 30mm Length Durable Construction – 6140 | Star (Torx) Screwdriver Bit
This T-40 star screwdriver bit is built for consistent engagement and controlled driving with a 1/4 inch hex shank. With a compact 30mm overall length, it fits well where fastener access is limited while staying compatible with standard bit holders and drivers.
Manufactured from High Speed Steel and heat treated for strength, it is designed to stand up to heavy, repeated use. Clear size stamping supports fast identification and better tool organization in busy professional environments.
Key Benefits
- T-40 star (Torx) profile supports accurate fit and dependable fastener engagement.
- 1/4 inch hex shank fits common drivers, holders, and bit adapters.
- 30mm overall length helps reach tight areas without unnecessary bit overhang.
- High Speed Steel construction delivers high strength, durability, and anti-corrosive properties.
- Heat-treated design provides tough exterior wear resistance and strong inner core.
- Size is permanently stamped for quick identification and streamlined tool organization.
- Meets or exceeds ANSI standards for quality and consistent professional performance.
Engineered for professional technicians and demanding shop use, this bit focuses on durability and repeatable results. The material choice, heat treatment, and clearly marked sizing help reduce downtime and improve workflow when swapping bits, while remaining built for long-term service under heavy use.
| Brand | Genius Tools |
|---|---|
| Material | High Speed Tool Steel |
| Size | T-40 |
| Drive Size | 1/4" Hex Shank |
| Length | 30mm |
| Type | Star Screwdriver Bits |
