براغي رأس سداسية مقاس 1/4-20 × 1-3/8 بوصة | فولاذ درجة 5 أصفر زنك | ملولبة جزئيًا (200/عبوة)

Used a handful of these to repair an old assembly machine, and the grade 5 steel held up perfectly under moderate torque. The partial threading made alignment much easier than I expected. Exactly what I needed for the job.

The partial threads make these cap screws grip perfectly in my equipment mounts without bottoming out. Grade 5 feels solid, and the yellow zinc coating should resist rust well.

I needed some decent fasteners for a metal shelving project, and these hex heads fit my wrench perfectly without any stripping. The yellow zinc coating seems tough and the partial threading grabbed the nut well.