براغي رأس سداسي 1-1/2-12 × 4 بوصة | صناعة أمريكية | فولاذ سبيكة PFC9 مطلي بالزنك الأصفر (18/عبوة)

These threads chased perfectly into a 4-inch steel plate without a single stripped head, and the yellow zinc finish still looks fresh after a week of oily shop work. For the price per piece, you can’t beat having a full box of American-made hardware that doesn’t need re-torquing.

Got these for a heavy machinery repair and the hex heads gave my socket a solid, non-slip grip even with some rust on the bolts. The yellow zinc finish seems like it'll hold up well in the shop environment.

These cap screws are exactly what I needed for reassembling a piece of industrial equipment—the yellow zinc coating looks tough and corrosion-resistant. The hex heads held up well under my wrench without any stripping.