براغي رأس مقبس 1-12 × 9" | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (10/عبوة)

Needed a long fastener for aligning a precision assembly and these 9-inchers fit perfectly—the black oxide finish looks clean and adds a bit of corrosion resistance. Definitely solid, no complaints so far.

Used these in a jig I'm building and the black oxide coating held up great during test runs. The 1-12 thread cut cleanly into tapped holes without any binding, even at 9 inches long.

Needed 9 inch fasteners for a heavy tooling fixture, and the partial threads let me get full depth without bottoming out. The black oxide finish slid right in without any galling, and the hex drive gripped perfectly with no stripping.