M6-1 x 8mm 六角穴付きボルト | ボタンヘッド六角ドライブ | 全ねじ | クラス12.9 合金鋼 黒色酸化処理 (400本/袋)

Finally found some M6-1 screws that actually hold up in my jig builds without stripping out — the Class 12.9 rating makes a real difference compared to the usual cheaper hardware. Button head profile fits nicely into tight spots, and the black oxide finish seems durable so far.

The hex socket on these M6-1 screws gives a secure grip without stripping, and the all-steel black oxide finish looks clean on my jig setup. Great for precision assemblies where you need a solid bite.

The black oxide finish on these M6-1 x 8mm screws is holding up nicely even in a jig I use daily. For 400 pieces at this price, the consistent threading and strength are exactly what I needed.