#3-48 × 7/16" براغي ذات غطاء مقبس | رأس زر مع محرك سداسي المقبس | ملولبة بالكامل | فولاذ سبائكي مع أكسيد أسود حراري (200/عبوة)

I've been using these for a precision jig I'm building and the #3-48 thread engagement is spot on every time. The hex socket drive makes them easy to seat even in tight spots, and the full threading gives a solid grip throughout.

The black oxide finish held up perfectly during assembly of my jig—no flaking or residue on my fingers. Threads cut clean and seated fully in #3-48 taps without any binding, which is exactly what I needed for precision work.

The hex socket drive fits my Allen wrench perfectly, so seating them in a tight jig took no effort at all. Full threading along the 7/16" length made alignment straightforward, and the black oxide finish wiped clean without any flaking.