براغي ذات رأس مقبس #4-40 × 3/8" بوصة | محرك مقبس سداسي | صناعة أمريكية | ملولبة بالكامل | نحاس (100 / عبوة)

I’ve been using these brass #4-40 screws to fasten a small jig I built, and the fully threaded length grips perfectly in thin brass plates. They’re tougher than I expected for such a tiny fastener.

I’ve been using these brass screws for small jig builds and they’re holding up great—the hex drive really bites into the wrench without camming out. The uniform threading made installation smooth and they look clean with the brass finish.

The hex socket drives seat perfectly with a standard allen key, and the brass threading is clean enough that I didn’t have to chase a single one. Used them on a jig I’m building, and they’re holding up great under repeated tightening.