9/16-18 x 4インチ 六角頭キャップスクリュー | アメリカ製 | PFC9 合金鋼 黄亜鉛メッキ (25 / パック)

The yellow zinc coating on these is consistent and looks great, and the hex head fit my socket perfectly without any wobble. I used them to secure a heavy press, and they torqued down evenly without stripping.

These are beefy bolts – the threads are smooth and the yellow zinc coating looks like it will hold up well. Used them to secure a heavy bracket and the hex head gave my socket a solid bite without any slipping.

Needed some longer 9/16 bolts for a jig I was building, and these 4-inch ones were exactly what I was after. The hex heads are cleanly machined and grab the socket without slipping. They feel solid and the yellow zinc finish looks good against the steel.