1-1/4-7 X 8" 重型六角頭螺絲 | 美國製造 | A307 B級鋼鍍鋅 | 部分螺紋 (10顆/包)

Zinc plating looks clean and even across all ten bolts, and the threads cut smoothly into my steel brackets without binding. For a heavy industrial fastener at this price, the USA-made quality is obvious right out of the package.

Used a few of these to secure a heavy motor mount, and the zinc coating held up well against initial torque without any galling. The partial threading gave exactly the grip length I needed for a tight fit. Solid fasteners for the price.

The partially threaded shaft on these helped get a good grip in my equipment frame without needing a separate spacer. Zinc plating looks fine and the threads cut cleanly. Only gave four stars because the bag could be resealable.