براغي رأس سداسي مقاس 5/16-24 × 6-1/2" | صناعة أمريكية | فولاذ درجة 8 زنك أصفر (250 / عبوة)

Needed to replace some worn bolts on a trailer hitch and these fit perfectly with a 5/16" socket. The Grade 8 steel feels much tougher than the old hardware I took off.

Went through a whole box mounting brackets on a press and every one seated flush without a single stripped thread. The yellow zinc coating held up nicely even where I had to wrench them down hard. Grade 8 strength gives me confidence these won't snap under load.

The threads were perfectly clean on every single bolt, which saved me time fighting with a die. The yellow zinc coating looks great and these grade 8s definitely feel stronger than the hardware store stuff. Perfect for the bracket I was bolting onto my tractor frame.