براغي رأس سداسي ثقيل 7/8-9 × 4-1/4 بوصة | ASTM A193 B7 سبيكة فولاذ عادي | خيط جزئي (45 / عبوة)

The partial threading on these 7/8-9 bolts made lining them up in a tight flange joint much easier than I expected. They torqued down cleanly with no galling, even on a reused nut. Exactly what I needed for a heavy pump base.

These grade B7 bolts threaded smoothly into my press frame without any binding, even with the partial threads. The hex head took a socket wrench easily and the alloy steel feels solid for a heavy assembly.

I needed these for a high-torque flange connection and the 45-piece pack gave me extras for spares. The partial threading made alignment much easier compared to fully threaded bolts.