1/2-20 x 7" 六角頭螺絲 | 美國製造 | PFC9合金鋼黃鋅 (25個/包)

I needed some extra-long 7-inch bolts for a custom jig I’m building, and these hex head cap screws from the USA fit perfectly. The PFC9 alloy steel feels tough and the threading was clean right out of the box—no burs or tight spots. They’re holding my heavy fixture together without any issues so far

The yellow zinc finish on these bolts is holding up perfectly against the grime in my workshop, and the hex head grips my socket wrench without slipping. For heavy equipment assembly, they're exactly the right length and strength.

I needed an extra-long bolt for a jig I was building on my milling machine, and these 7-inch hex heads threaded in smoothly without any binding. The PFC9 alloy steel feels solid in the hand, and the socket drive grabbed the head securely even under high torque.