- Generally Conforming to IS 3082-1988 Black
- Allen keys are made from Chrome Vanadium Steel which withstand upto 30% higher torque as compared to Allen keys made Carbon Steel.
- TAPARIA Black Allen Keys are scientifically hardened to 52 to 56 HRC. Other makes Allen keys are usually offered with hardness in the range of 48 to 52 HRC.
- As a result of higher hardness offered in case of TAPARIA Black Allen keys along with superior steel properties the wear resistance and life is more of TAPARIA Allen keys.
- Allen keys are precision drawn for perfect matching of Allen keys with screw head.
| PRODUCT NO. | Size | L1 | L2 |
| K1.5V | 1.5mm. | 44 | 14 |
| K2V | 2mm. | 48 | 15 |
| K2.5V | 2.5mm. | 51 | 17 |
| K3V | 3mm. | 57 | 19 |
| K4V | 4mm. | 64 | 21 |
| K5V | 5mm. | 71 | 24 |
| K6V | 6mm. | 84 | 28 |
| K10V | 10mm. | 108 | 35 |
| AK-12 | 12mm. | 125 | 45 |
| AK-14 | 14mm. | 140 | 56 |
| AK-17 | 17mm. | 160 | 63 |
| AK-19 | 19mm. | 180 | 70 |
| AK-22 | 22mm. | 200 | 80 |
| AK-24 | 24mm. | 224 | 90 |
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