MS21209F1-20 | إدراجات حلزونية عسكرية | فولاذ مقاوم للصدأ 304 (50 / عبوة)

Used a pack of these to repair stripped threads on an engine mount, and the 304 stainless steel held up perfectly under torque. The self-locking tangs seated cleanly and none of them spun out during installation. Exactly the durability I needed for a permanent fix.

Installed a full pack of these across several jigs and they seated cleanly every time; the 304 stainless gives a nice, solid feel when the bolt runs in. Only knock is the tang removal takes a few extra seconds with my tool, but no binding issues at all.

Installed a full pack of these into a jig plate, and every insert seated perfectly without any issues. The 304 stainless feels sturdy and should hold up well in regular assembly work. Only wish the pack included a few more for the price.