براغي ذات رأس سداسي 3/4-10 × 4-1/2" | صناعة أمريكية | سبيكة فولاذ PFC9 مطلي بالزنك الأصفر (20 / عبوة)

Just got these for a heavy machinery repair and the threads cut smoothly with no binding during installation. The yellow zinc finish looks durable, too, so they should hold up well in a slightly damp shop environment.

These 4 1/2 inch cap screws have a nice, even yellow zinc finish and threaded smoothly into the bracket I was assembling. The hex heads are deep and clean, so my socket got a solid bite without slipping.

I work on heavy equipment daily and these cap screws hold up well—no stripping after tightening with a torque wrench. The yellow zinc coating on the PFC9 alloy steel seems durable so far. Only wish they came in a larger quantity per pack for bigger jobs.