براغي رأس سداسية ثقيلة 1"-8 × 4" | ASTM A193 B7 فولاذ سبائكي غير مطلي | خيط جزئي (35 / عبوة)

Threads cut clean and the partial threading made alignment way easier than I expected on this motor mount. These B7s feel properly heat-treated, solid weight, and all 35 arrived with no damaged threads. Definitely my new go-to for heavy bolting.

Installed these on a large pump base and the threads cut clean without any binding. The partially threaded shank gave just the right grip depth for my 4-inch flanges.

Took these to a heavy equipment repair job and the partially threaded design made alignment much easier than fully threaded bolts. The alloy steel feels solid, no bending under high torque.