Key Steel
Also known as Key Bars or Key Stock, these essential machine components play a crucial role in power transmission by securing rotating elements onto drive shafts. They are widely used to locate and drive various mechanical components such as couplings, pulleys, drums and propellers, ensuring efficient torque transfer. Acting as the interface between the shaft and the mounted component, key steel prevents relative rotation, which is critical for maintaining precise alignment and operational stability. By locking these components in place, the TransDrive key steel enhances durability, reduces wear, and supports the safe and efficient performance of industrial machinery across multiple applications.
our Range
- Zinc-Coated
- Stainless Steel
Product Specifications
Zinc Coated
metric
| Product Code | Size | to suit shafts between | App. kg | |
|---|---|---|---|---|
| Min | Max | |||
| KS-3-3MM-Z | 3 x 3mm | – | – | 0.03 |
| KS-4-4MM-Z | 4 x 4mm | 10 | 12 | 0.04 |
| KS-5-5MM-Z | 5 x 5mm | 12 | 17 | 0.06 |
| KS-6-6MM-Z | 6 x 6mm | 17 | 22 | 0.08 |
| KS-6-8MM-Z | 6 x 8mm | – | – | 0.12 |
| KS-6-10MM-Z | 6 x 10mm | – | – | 0.14 |
| KS-7-7MM-Z | 7 x 7mm | – | – | 0.13 |
| KS-7-8MM-Z | 7 x 8mm | 22 | 30 | 0.13 |
| KS-8-8MM-Z | 8 x 8mm | – | – | 0.15 |
| KS-8-10MM-Z | 8 x 10mm | 30 | 38 | 0.19 |
| KS-8-12MM-Z | 8 x 12mm | 38 | 44 | 0.23 |
| KS-9-14MM-Z | 9 x 14mm | 44 | 50 | 0.3 |
| KS-10-10MM-Z | 10 x 10mm | – | – | 0.24 |
| KS-10-12MM-Z | 10 x 12mm | – | – | 0.28 |
| KS-10-16MM-Z | 10 x 16mm | 50 | 58 | 0.38 |
| KS-11-18MM-Z | 11 x 18mm | 58 | 65 | 0.47 |
| KS-12-12MM-Z | 12 x 12mm | – | – | 0.34 |
| KS-12-20MM-Z | 12 x 20mm | 65 | 75 | 0.57 |
| KS-14-14MM-Z | 14 x 14mm | – | – | 0.46 |
| KS-14-22MM-Z | 14 x 22mm | 75 | 85 | 0.73 |
| KS-14-25MM-Z | 14 x 25mm | 85 | 95 | 0.82 |
| KS-16-16MM-Z | 16 x 16mm | – | – | 0.6 |
| KS-16-28MM-Z | 16 x 28mm | 95 | 110 | 1.06 |
| KS-18-18MM-Z | 18 x 18mm | – | – | 0.76 |
| KS-18-32MM-Z | 18 x 32mm | 110 | 130 | 1.36 |
| KS-20-20MM-Z | 20 x 20mm | – | – | 0.94 |
| KS-20-36MM-Z | 20 x 36mm | 130 | 150 | 1.7 |
| KS-22-22MM-Z | 22 x 22mm | – | – | 1.14 |
| KS-22-40MM-Z | 22 x 40mm | 150 | 170 | 2.07 |
| KS-25-25MM-Z | 25 x 25mm | – | – | 1.5 |
Imperial
| Product Code | Size | to suit shafts between | App. kg | |
|---|---|---|---|---|
| Min | Max | |||
| KS-18-18-Z | 1/8 X 1/8 | 1/4 | 1/2 | 0.02 |
| KS-18-14-Z | 1/8 X 1/4 | – | – | 0.05 |
| KS-18-316-Z | 1/8 X 3/16 | – | – | 0.04 |
| KS-532-532-Z | 5/32 X 5/32 | – | – | 0.04 |
| KS-316-316-Z | 3/16 X 3/16 | 1/2 | 3/4 | 0.05 |
| KS-316-14-Z | 3/16 X 1/4 | – | – | 0.07 |
| KS-14-14-Z | 1/4 X 1/4 | 3/4 | 1 | 0.1 |
| KS-14-516-Z | 1/4 X 5/16 | – | – | 0.12 |
| KS-14-12-Z | 1/4 X 1/2 | – | – | 0.19 |
| KS-14-38-Z | 1/4 X 3/8 | 1 1/4 | 1 1/2 | 0.14 |
| KS-516-516-Z | 5/16 X 5/16 | 1 | 1 1/4 | 0.15 |
| KS-516-38-Z | 5/16 X 3/8 | – | – | 0.18 |
| KS-516-716-Z | 5/16 X 7/16 | 1 1/2 | 1 3/4 | 0.21 |
| KS-516-12-Z | 5/16 X 1/2 | 1 3/4 | 2 | 0.24 |
| KS-38-38-Z | 3/8 X 3/8 | 1 1/4 | 1 1/2 | 0.22 |
| KS-38-12-Z | 3/8 X 1/2 | – | – | 0.29 |
| KS-38-716-Z | 3/8 X 7/16 | – | – | 0.3 |
| KS-716-716-Z | 7/16 X 7/16 | 1 1/2 | 1 3/4 | 0.3 |
| KS-716-12-Z | 7/16 x 1/2 | – | – | 0.34 |
| KS-716-58-Z | 7/16 x 5/8 | 2 | 2 1/2 | 0.42 |
| KS-12-12-Z | 1/2 x 1/2 | 1 3/4 | 2 | 0.39 |
| KS-12-58-Z | 1/2 x 5/8 | – | – | 0.48 |
| KS-12-34-Z | 1/2 x 3/4 | – | – | 0.58 |
| KS-916-58-Z | 9/16 x 5/8 | – | – | 0.55 |
| KS-916-916-Z | 9/16 x 9/16 | 2 | 2 1/4 | 0.49 |
| KS-58-58-Z | 5/8 x 5/8 | 2 | 2 1/2 | 0.6 |
| KS-58-34-Z | 5/8 x 3/4 | 2 1/2 | 3 | 0.72 |
| KS-58-78-Z | 5/8 x 7/8 | 3 | 3 1/2 | 0.84 |
| KS-34-34-Z | 3/4 x 3/4 | 2 1/2 | 3 | 0.87 |
| KS-34-1-Z | 3/4 x 1 | 3 1/2 | 4 | 1.16 |
| KS-78-78-Z | 7/8 x 7/8 | 3 | 3 1/2 | 1.18 |
| KS-78-114-Z | 7/8 x 1 1/4 | 4 | 5 | 1.69 |
| KS-1-1-Z | 1 x 1 | – | – | 1 |
| KS-118-118-Z | 1 1/8 x 1 1/8 | 4 | 4 1/2 | 1.95 |
| KS-1-112-Z | 1 x 1 1/2 | 5 | 6 | 2.32 |
| KS-114-114-Z | 1 1/4 x 1 1/4 | 4 | 5 | 2.41 |
| KS-112-112-Z | 1 1/2 x 1 1/2 | 5 | 6 | 3.47 |
| KS-134-134-Z | 1 3/4 x 1 3/4 | 6 1/2 | 7 | 4.73 |
| KS-2-2-Z | 2 x 2 | – | – | 6.17 |
Stainless Steel
Metric
| Product Code | Size | to suit shafts between | App. kg | |
|---|---|---|---|---|
| Min | Max | |||
| KS-3-3MM-sS | 3 x 3mm | – | – | 0.02 |
| KS-4-4MM-SS | 4 x 4mm | 10 | 12 | 0.04 |
| KS-5-5MM-SS | 5 x 5mm | 12 | 17 | 0.06 |
| KS-6-6MM-SS | 6 x 6mm | 17 | 22 | 0.08 |
| KS-7-8MM-SS | 7 x 8mm | 22 | 30 | 0.12 |
| KS-8-8MM-SS | 8 x 8mm | – | – | 0.15 |
| KS-8-10MM-SS | 8 x 10mm | 30 | 38 | 0.19 |
| KS-8-12MM-SS | 8 x 12mm | 38 | 44 | 0.23 |
| KS-9-14MM-S | 9 x 14mm | 44 | 50 | 0.30 |
| KS-10-10MM-SS | 10 x 10mm | – | – | 0.24 |
| KS-10-16MM-SS | 10 x 16mm | 50 | 58 | 0.38 |
| KS-11-18MM-SS | 11 x 18mm | 58 | 65 | 0.48 |
| KS-12-12MM-SS | 12 x 12mm | – | – | 0.35 |
| KS-12-20MM-SS | 12 x 20mm | 65 | 75 | 0.58 |
| KS-14-14MM-SS | 14 x 14mm | – | – | 0.47 |
| KS-16-16MM-SS | 16 x 16mm | – | – | 0.61 |
| KS-20-20MM-SS | 20 x 20mm | – | – | 0.96 |
Imperial
| Product Code | Size | to suit shafts between | App. kg | |
|---|---|---|---|---|
| Min | Max | |||
| KS-18-18-sS | 1/8 X 1/8 | 1/4 | 1/2 | 0.03 |
| KS-316-316-sS | 3/16 X 3/16 | 1/2 | 3/4 | 0.05 |
| KS-14-14-SS | 1/4 X 1/4 | 3/4 | 1 | 0.10 |
| KS-516-516-SS | 5/16 X 5/16 | 1 | 1 1/4 | 0.15 |
| KS-38-38-SS | 3/8 X 3/8 | 1 1/4 | 1 1/2 | 0.22 |
| KS-716-716-SS | 7/16 X 7/16 | 1 1 /2 | 1 3/4 | 0.30 |
| KS-12-12-SS | 1/2 X 1/2 | 1 3/4 | 2 | 0.39 |
| KS-916-916-SS | 9/16 X 9/16 | 2 | 2 1/4 | 0.49 |
| KS-58-58-SS | 5/8 X 5/8 | 2 | 2 1/2 | 0.60 |
| KS-34-34-SS | 3/4 X 3/4 | 2 1/2 | 3 | 0.87 |
| KS-78-78-SS | 7/8 x 7/8 | 3 | 3 1/2 | 1.19 |
| KS-1-1-SS | 1 x 1 | – | – | 1.55 |