1. Background of arrangements
When removing the lower side cowl tapping screw, I noticed that if I used my short hexagon bit socket, it would hit the lower side cowl.
So, I bought this long hexagon bit socket to avoid damaging the cowl.
You can of course remove it with the hexagonal spanner in your car tool.
However, considering that I will be removing and installing the cowl/panel many times in the future, I thought it would be better to have a hexagon bit socket with good workability.
2. Product description
1) Overview
| Manufacturer/brand | KYOTO TOOL CO., LTD. / KTC |
| Parts Name | 9.5sq Long hexagon bit socket |
| Parts Number | BT3-04L |
| Country of origin | Japan |
| Date of purchase | 10th May 2021 |
| Where to buy | Web store |
| New/used | New |
| Price buy [Yen] | 842 |
| Regular price [Yen] | 1,485 |
| Evaluation |
2) Appearance
＜Bit side＞
<Socket side>
3) Uses and specification
① Uses
For loosening and tightening hexagon socket head bolts in deep and narrow areas.
When used, it is attached to the following KTC tools.
- Handle / AB-53… for bolts
- Quick spinner / BE3-Q… for tapping screws
＜Attached to handle＞
＜Attached to quick spinner＞
② Specification
| Size | 4 mm |
| Overall length | 128 mm |
| Outer diameter | φ17 mm |
| Bit length | 99 mm |
| Weight | 59 g (Actual measurements) |
3. Product Review
1) Good points
- When removing the lower side cowl tapping screw, it doesn’t hit the lower side cowl.
- So far, I haven’t licked the hex holes on the bolts/tapping screws.
- When inserting the bit into the hexagonal hole of the screw, I have to hold my finger to avoid hitting other parts, but it is easier to hold my finger than with a short socket.
- Only the bit (T-04L) can be replaced when the bit is damaged.
2) Unsatisfied points
- The hexagon socket set screw that holds the bit in place loosens after use. (unavoidable due to its construction)
- In addition to the rattling of the 9.5sq connection, when the bit comes loose, I feel that the shaft is shaky. (unavoidable because the bit length is 99mm)
- The size indicator (04L) on the hexagonal bit socket is on the bit, so the letters are small and difficult to read. (due to my old eyes)
4. Summary
It may not be a high priority tool to prepare but having it does not disrupt the rhythm of the work.
Note that in the maintenance record ‘How to remove side cowls and panels etc.’, the BT3-04L is used for more than just the screws on the underside of the side cowl, but the 9.5 sq. short hexagon bit socket / BT3-04S is easier to use.
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