براغي ذات رأس مقبس #5-40 × 3 بوصة | محرك مقبس سداسي | صناعة أمريكية | ملولبة بالكامل | فولاذ سبائكي مع أسود حراري (100/عبوة)

The black oxide finish on these screws is holding up perfectly in my jig setup, and they thread smoothly without binding. Exactly the length and strength I needed for a precision assembly project.

I needed some long #5-40 screws for a jig I'm building, and these 3-inch ones are exactly what I was looking for. The hex socket drive makes them easy to wrench into tight spots, and the black oxide finish seems durable.

These screws threaded into my jig perfectly, no binding or tight spots at all. The 3-inch length is exactly what I needed for a deep assembly, and they feel plenty strong. Really glad I went with the 100-pack since I'll be using these regularly.