Genius Tools Star Bit Socket T-40 Size 3/8 Inch Drive 110mm Length Durable S2 Steel - 308+6540
- Genius Tools 308+6540 T-40 star bit socket for matching T-40 star fasteners with a 3/8 inch drive tool system.
- 3/8 inch drive fits compatible ratchets, extensions, and torque tools, helping confirm this socket matches your existing drive setup.
- 110mm overall length provides added reach for recessed hardware while keeping the T-40 bit engaged with the fastener.
- S2 steel construction gives this star bit socket a clear material specification for customers comparing similar driver sockets.
- Permanently stamped size markings make the T-40 socket easier to identify quickly and keep organized with other tools.
Also Available in Other Sizes (50) Same tool, different size Show all 50 sizes Hide sizes
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Size T-10 · Length 50mm
Special Price $3.70 Regular Price $5.69
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Size T-10 · Length 110mm
Special Price $6.36 Regular Price $9.78
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Size T-10 · Length 140mm
Special Price $6.88 Regular Price $10.58
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Size T-10 · Length 180mm
Special Price $9.11 Regular Price $14.02
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Size T-10 · Length 220mm
Special Price $10.30 Regular Price $15.84
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Size T-15 · Length 50mm
Special Price $3.70 Regular Price $5.69
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Size T-15 · Length 110mm
Special Price $6.36 Regular Price $9.78
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Size T-15 · Length 140mm
Special Price $7.91 Regular Price $12.17
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Size T-15 · Length 180mm
Special Price $9.11 Regular Price $14.02
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Size T-15 · Length 220mm
Special Price $8.95 Regular Price $13.77
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Size T-20 · Length 50mm
Special Price $4.25 Regular Price $6.54
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Size T-20 · Length 110mm
Special Price $6.36 Regular Price $9.78
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Size T-20 · Length 140mm
Special Price $6.88 Regular Price $10.58
-
Size T-20 · Length 180mm
Special Price $9.11 Regular Price $14.02
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Size T-20 · Length 220mm
Special Price $8.95 Regular Price $13.77
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Size T-25 · Length 50mm
Special Price $4.25 Regular Price $6.54
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Size T-25 · Length 110mm
Special Price $6.36 Regular Price $9.78
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Size T-25 · Length 140mm
Special Price $6.88 Regular Price $10.58
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Size T-25 · Length 180mm
Special Price $7.92 Regular Price $12.19
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Size T-25 · Length 220mm
Special Price $8.95 Regular Price $13.77
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Size T-27 · Length 50mm
Special Price $3.70 Regular Price $5.69
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Size T-27 · Length 110mm
Special Price $6.36 Regular Price $9.78
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Size T-27 · Length 140mm
Special Price $6.88 Regular Price $10.58
-
Size T-27 · Length 180mm
Special Price $7.92 Regular Price $12.19
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Size T-27 · Length 220mm
Special Price $8.95 Regular Price $13.77
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Size T-30 · Length 50mm
Special Price $4.25 Regular Price $6.54
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Size T-30 · Length 110mm
Special Price $7.31 Regular Price $11.25
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Size T-30 · Length 140mm
Special Price $6.88 Regular Price $10.58
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Size T-30 · Length 180mm
Special Price $7.92 Regular Price $12.19
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Size T-30 · Length 220mm
Special Price $10.30 Regular Price $15.84
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Size T-35 · Length 50mm
Special Price $4.02 Regular Price $6.19
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Size T-40 · Length 50mm
Special Price $4.96 Regular Price $7.63
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Size T-40 · Length 140mm
Special Price $9.22 Regular Price $14.19
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Size T-40 · Length 180mm
Special Price $9.24 Regular Price $14.21
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Size T-40 · Length 220mm
Special Price $10.29 Regular Price $15.83
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Size T-45 · Length 50mm
Special Price $5.67 Regular Price $8.72
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Size T-45 · Length 110mm
Special Price $9.22 Regular Price $14.19
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Size T-45 · Length 140mm
Special Price $9.54 Regular Price $14.67
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Size T-45 · Length 180mm
Special Price $11.06 Regular Price $17.01
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Size T-45 · Length 220mm
Special Price $14.45 Regular Price $22.23
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Size T-50 · Length 50mm
Special Price $4.93 Regular Price $7.59
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Size T-50 · Length 110mm
Special Price $8.02 Regular Price $12.34
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Size T-50 · Length 140mm
Special Price $9.54 Regular Price $14.67
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Size T-50 · Length 180mm
Special Price $11.06 Regular Price $17.01
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Size T-50 · Length 220mm
Special Price $12.56 Regular Price $19.33
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Size T-55 · Length 50mm
Special Price $7.31 Regular Price $11.25
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Size T-55 · Length 110mm
Special Price $10.14 Regular Price $15.60
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Size T-55 · Length 140mm
Special Price $13.18 Regular Price $20.27
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Size T-55 · Length 180mm
Special Price $16.90 Regular Price $26.00
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Size T-55 · Length 220mm
Special Price $16.20 Regular Price $24.92
Also Available in These Sets (1) This item is included in each set below Show all 1 sets Hide sets
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Star Bit Socket Set 10 Piece 3/8 Inch Drive Long Reach S2 Steel
Special Price $23.81 Regular Price $36.63
Genius Tools Star Bit Socket T-40 Size 3/8 Inch Drive 110mm Length Durable S2 Steel - 308+6540 Professional Star Bit Socket
This 3/8 inch drive T-40 star bit socket is built for consistent fit and controlled torque on star fasteners. With a 110mm (4.33 inch) overall length, it helps reach recessed hardware while maintaining stable engagement where shorter sockets may struggle.
Made from high speed steel for strength, durability, and anti-corrosive properties, it’s designed for demanding shop environments. Permanently stamped sizing supports fast identification and cleaner tool organization during repetitive work.
Key Benefits
- T-40 star size provides a secure, accurate fit on compatible fasteners.
- 3/8 inch drive works with common ratchets, extensions, and torque tools.
- 110mm overall length improves access while keeping handling predictable and controlled.
- High speed steel construction delivers high strength with anti-corrosive protection.
- Stamped size markings stay readable for quick selection and better organization.
- Interchangeable star bit socket design stays securely attached during demanding use.
- Meets or exceeds ANSI standards and includes a limited lifetime warranty.
SKU 308+6540 is built for professional technicians who need dependable engagement and long-term durability from a star bit socket. The combination of stamped identification, corrosion resistance, and ANSI-aligned performance helps keep work efficient and consistent across repeated service tasks and heavy use.
| Brand | Genius Tools |
|---|---|
| Material | HSS |
| Size | T-40 |
| Drive Size | 3/8" |
| Length | 110mm |
| Type | Star Bit Sockets |