براغي رأس سداسي 1-1/4-12 × 7 بوصة | صناعة أمريكية | فولاذ سبائكي درجة L9 زنك أصفر | خيط جزئي (6 / عبوة)

Used these to secure a heavy-duty jig on my milling table — the partial threads made it easy to get full engagement without bottoming out. The L9 alloy steel took full torque without a hint of deformation. Exactly what I needed for a high-stress application.

Wrenched down two of these on a press table this morning—the Grade L9 alloy steel feels solid, no twisting even under heavy torque. The partial threading made alignment a breeze too.

These bolts threaded perfectly into the frame I’m building, and the yellow zinc coating looks durable enough to resist rust. The grade L9 alloy steel feels seriously heavy-duty for the price.