MS35333-35B | 軍規內齒鎖緊墊圈 | 鋼 (1000顆/包)

I needed a large batch of lock washers for a vibration-heavy assembly line, and these internal tooth ones from the pack held tight without any slippage. The steel material feels durable, and the 1,000 count saves me from reordering for months.

The hardened steel finish on these lock washers bites well, and the internal tooth design held my motor mounts perfectly secure. I ran the equipment for hours with zero loosening, exactly what I needed for peace of mind.

I needed these for a heavy vibration setup on a workshop motor, and the internal teeth lock solidly against the bolt head as soon as they seat. The fact that it's a 1,000-count bag means I won't run out for years.