1/2-13 × 12" براغي رأس مقبس | رأس مسطح بمقبس سداسي | سبيكة فولاذ معالجة حرارياً بأكسيد أسود (20/عبوة)

The black oxide finish on these screws is a nice touch—they look clean and stayed put when I torqued them down on a jig. The hex socket drive made installation straightforward with an Allen key, and all twenty worked perfectly.

Used a set to build a custom fixture for metalworking, and the black oxide held up better than I expected against minor scuffs. The hex socket drive made installation quick even in tight spots, and all twenty were true to size.

Was threading these into a jig for a production run and the black oxide finish held up great against chips and coolant. The full 12-inch length gives plenty of grip for heavy clamping without any wobble.