Wrong Screws

Today, I tried to assemble a desk, but I missed eight screws.

Therefore, I went to a hardware store to buy screws.

However, I forgot to measure the exact diameter of the missing screws, and I struggled to buy which size.

Sensuously, I thought the size was 4 to 5 mm, and I bought eight screws of M4 and M5, respectively.

Since the hardware store was far from my apartment, I didn't want to go there again.

So just in case, I also bought some other screws that have different length.

Unfortunately, the diameter of the screw hole was 6 mm.

Begrudgingly, I went to the hardware store again.

I will measure with a caliper in advance.

間違ったねじ

今日は机を組み立てようとしましたが、ねじが8本足りませんでした（無くしました）。

そのため、ホームセンターに買いに出かけました。

しかし、ねじ穴の直径を正確に測るのを忘れていたため、どのサイズを買うかかなり悩みました。

感覚的に直径4-5 mmくらいだったと思い、M4とM5のねじを8本ずつ買いました。

ホームセンターは家から遠いので、買い直しに来たくはありません。

そこで念のため、ねじの長さが異なるものも何種類か買いました。

残念ながら、ねじ穴の直径は6 mmでした。

泣く泣くもう一度ホームセンターに行きました。

今度からはちゃんとノギスで測ります。

• However, I forgot to measure the exact diameter of the missing screws, and I struggled to buy which size.
• However, I forgot to measure the exact diameter of the missing screws, and I struggled with which size to buy.

• I will measure with a caliper in advance.
• This time I will measure them with a caliper in advance.

Is this a standing desk you wrote about earlier?

• Today, I tried to assemble a desk, but I missed eight screws.
• Today, I tried to assemble a desk, but I was missing eight screws.

  -ing form needed to give a sense of an ongoing action

• Therefore, I went to a hardware store to buy screws.
• This sentence is perfect! No correction needed!

• However, I forgot to measure the exact diameter of the missing screws, and I struggled to buy which size.
• However, I forgot to measure the exact diameter of the missing screws, and I ended up struggling with which size to buy.

  Gives a better sense of the action

• Sensuously, I thought the size was 4 to 5 mm, and I bought eight screws of M4 and M5, respectively.
• Sensuously, I thought the size was between 4 to 5 mm, so I settled on buying eight screws of M4 and M5, respectively.

  That word you used is mostly used for its second meaning - something attractively and sexually appealing. Here, it just doesn't make sense.
  
  Settled on buying = more advanced but I think you can handle it.

• Since the hardware store was far from my apartment, I didn't want to go there again.
• I didn't want to travel again because the hardware store was far from my apartment.

  I prefer writing it this way. It's clearer.

• So just in case, I also bought some other screws that have different length.
• Just to be doubly sure, I also bought various screws of differing length.

  This flows better,

• Unfortunately, the diameter of the screw hole was 6 mm.
• This sentence is perfect! No correction needed!

• Begrudgingly, I went to the hardware store again.
• This sentence is perfect! No correction needed!

• I will measure with a caliper in advance.
• This time, I made sure to measure them with a caliper first.

  Still recalling, so I put it in the past.

A good amount of humour in your entry. Haha.