براغي غطاء سوكيت مقاس 5/16-18 × 5-3/4" | محرك سداسي | ملولبة جزئياً | فولاذ سبائكي مع أكسيد أسود حراري (50 / عبوة)

The partially threaded length is perfect for clamping thicker jig plates without bottoming out, and the black oxide finish has held up through a week of assembly work without any rust or gunk buildup. Pack of fifty is solid value for the shop.

The hex socket drive made installation so much easier than using a standard wrench, and the black oxide finish looks great on my machine frame. Perfectly consistent thread quality across all 50 pieces too.

Used these for a custom jig fixture and the partially threaded section is perfect for clamping without bottoming out. The hex socket drive held up through repeated torque with zero stripping, and the thermal black oxide finish looks sharp against the steel.