M6-1 x 45mm キャップスクリュー | 皿穴付き六角穴付きボルト | 半ねじ | 合金鋼 グレード10.9 熱処理黒色酸化被膜 (300本/袋)

I needed a batch of M6 socket cap screws for a jig I’ve been machining, and the 45mm length with the partial thread gave me just the right grip depth without wasting space. The hex socket drive feels precise and clean, and the black oxide finish looks durable out of the box.

The partially threaded design is exactly what I needed for my jig setup, and the hex socket drive seats perfectly with no wobble. All 300 pieces arrived clean and the black oxide finish looks consistent across the lot — they’ve held up well under repeated torque in my tooling builds.

The hex socket drive fits my Allen key perfectly, so installing these into a jig fixture was straightforward. The black oxide finish seems like it will resist shop grime well. My only minor gripe is that the threading could start a bit closer to the head for tighter spots.