7/8-9 x 4" 육각 머리 볼트 | 미국 제조 | PFC9 합금강 황색 아연 도금 (10개/팩)

Used a full package on a conveyor rebuild and every single one seated without a hiccup — the hex heads grabbed a socket cleanly, no stripped corners. The yellow zinc finish is holding up fine against the shop’s humidity so far. Exactly what you want when you’re torquing to spec and can’t afford a fa

Threads are clean and the yellow zinc coating is even across all ten, so they’ll hold up fine in a damp shop. I grabbed these for a pump base rebuild and the hex heads seated snug with a socket, no stripped corners. Exactly what I expected from a US-made fastener.

The torque on these 7/8-9 bolts was consistent across all ten, and the yellow zinc coating looks like it’ll hold up well in my shop. Threads were clean and started smoothly by hand.