Ko-Ken KO4405A32 12-Point Socket, 1 in, 1/2 in Drive
Available
The Ko-Ken 4405A is a 12-point socket with a 1/2 in square drive. (manufacturer-stated)
Sizes run from 5/16 to 1-1/2 in.
Lengths are 36 to 47 mm. (manufacturer-stated)
Each model is listed in the table below with its specifications.
Where this product is used
- Turning inch nuts and bolts with a 1/2 in drive ratchet or handle
- Workshop, maintenance and assembly work on exposed fasteners
- General workshop and maintenance fastening
Features
- 1/2 in square drive (manufacturer-stated)
- 12-point (bi-hexagon) opening (manufacturer-stated)
Common specifications
| Specification | Detail |
|---|---|
| Drive | 1/2 in (manufacturer-stated) |
| Opening | 12-point (manufacturer-stated) |
Key specifications
| Model | Size | Length | Weight |
|---|---|---|---|
| KO4405A10 | 5/16 in | 36 mm (manufacturer-stated) | 44 g (manufacturer-stated) |
| KO4405A12 | 3/8 in | 37 mm (manufacturer-stated) | 45 g (manufacturer-stated) |
| KO4405A14 | 7/16 in | 37 mm (manufacturer-stated) | 46 g (manufacturer-stated) |
| KO4405A16 | 1/2 in | 37 mm (manufacturer-stated) | 53 g (manufacturer-stated) |
| KO4405A18 | 9/16 in | 37 mm (manufacturer-stated) | 56 g (manufacturer-stated) |
| KO4405A19 | 19/32 in | 37 mm (manufacturer-stated) | 57 g (manufacturer-stated) |
| KO4405A20 | 5/8 in | 37 mm (manufacturer-stated) | 62 g (manufacturer-stated) |
| KO4405A21 | 21/32 in | 37 mm (manufacturer-stated) | 69 g (manufacturer-stated) |
| KO4405A22 | 11/16 in | 37 mm (manufacturer-stated) | 74 g (manufacturer-stated) |
| KO4405A24 | 3/4 in | 38 mm (manufacturer-stated) | 89 g (manufacturer-stated) |
| KO4405A25 | 25/32 in | 38 mm (manufacturer-stated) | 92 g (manufacturer-stated) |
| KO4405A26 | 13/16 in | 38 mm (manufacturer-stated) | 102 g (manufacturer-stated) |
| KO4405A28 | 7/8 in | 40 mm (manufacturer-stated) | 113 g (manufacturer-stated) |
| KO4405A30 | 15/16 in | 42 mm (manufacturer-stated) | 140 g (manufacturer-stated) |
| KO4405A31 | 31/32 in | 42 mm (manufacturer-stated) | 165 g (manufacturer-stated) |
| KO4405A32 | 1 in | 42 mm (manufacturer-stated) | 165 g (manufacturer-stated) |
| KO4405A34 | 1-1/16 in | 43 mm (manufacturer-stated) | 180 g (manufacturer-stated) |
| KO4405A36 | 1-1/8 in | 43 mm (manufacturer-stated) | 210 g (manufacturer-stated) |
| KO4405A38 | 1-3/16 in | 46 mm (manufacturer-stated) | 222 g (manufacturer-stated) |
| KO4405A40 | 1-1/4 in | 46 mm (manufacturer-stated) | 261 g (manufacturer-stated) |
| KO4405A42 | 1-5/16 in | 47 mm (manufacturer-stated) | 275 g (manufacturer-stated) |
| KO4405A44 | 1-3/8 in | 47 mm (manufacturer-stated) | 317 g (manufacturer-stated) |
| KO4405A46 | 1-7/16 in | 47 mm (manufacturer-stated) | 336 g (manufacturer-stated) |
| KO4405A48 | 1-1/2 in | 47 mm (manufacturer-stated) | 380 g (manufacturer-stated) |
Lengths and weights are manufacturer-stated (Ko-ken catalogue 2025-26).
Selecting the right option
Match the 1/2 in square drive to your ratchet or handle, then choose the size that fits the fastener. The catalogue prints one dimension table for the 6-point and 12-point series (4405A and 4400A), so the lengths and weights shown here are the figures printed for both. (manufacturer-stated) The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and not to substitute hand sockets for impact sockets; this series is listed in the hand sockets section of the catalogue. (manufacturer-stated)
Related products
Related Ko-Ken products: Ko-Ken 4400A 6-Point Socket, Inch Sizes, 1/2 in Drive, Ko-Ken 4305A 12-Point Deep Socket, Inch Sizes, 1/2 in Drive, Ko-Ken 4300A 6-Point Deep Socket, Inch Sizes, 1/2 in Drive, Ko-Ken 4405W 12-Point Whitworth Socket, Whitworth Sizes, 1/2 in Drive and Ko-Ken 3000-60 Phillips Bit Socket, 3/8 in Drive.
Resources
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1mm socket
Model Number: KO4405A32
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1.1/2mm socket
Model Number: KO4405A48
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1.1/4mm socket
Model Number: KO4405A40
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1.1/8mm socket
Model Number: KO4405A36
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1.1/16mm socket
Model Number: KO4405A34
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1.3/8mm socket
Model Number: KO4405A44
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1.3/16mm socket
Model Number: KO4405A38
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1.5/16mm socket
Model Number: KO4405A42
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1.7/16mm socket
Model Number: KO4405A46
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1/2mm socket
Model Number: KO4405A16
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3/4mm socket
Model Number: KO4405A24
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3/8mm socket
Model Number: KO4405A12
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5/8mm socket
Model Number: KO4405A20
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5/16mm socket
Model Number: KO4405A10
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7/8mm socket
Model Number: KO4405A28
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7/16mm socket
Model Number: KO4405A14
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9/16mm socket
Model Number: KO4405A18
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11/16mm socket
Model Number: KO4405A22
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13/16mm socket
Model Number: KO4405A26
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15/16mm socket
Model Number: KO4405A30
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19/32mm socket
Model Number: KO4405A19
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21/32mm socket
Model Number: KO4405A21
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25/32mm socket
Model Number: KO4405A25
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31/32mm socket
Model Number: KO4405A31
