HOLO-KROME 08038 3/8" x 5/8" 肩式螺絲 | 內六角頭 | 六角驅動 | 合金鋼熱處理黑色氧化 (25 / 包)

The precision ground shoulder on these screws was exactly what I needed for a indexing pivot on a custom jig, and the black oxide finish cleaned up easily with a rag. They seated perfectly without any wobble, so I've already ordered another pack.

The hex socket drive makes seating these in tight spots a breeze, and the precision-ground shoulder is spot-on for a clean pivot fit. I've used a handful already for a jig build and they're holding up perfectly.

The shoulder on these screws is ground perfectly true, making them ideal for a small pivot arm I was repairing. They seated flush with no wobble, and the black oxide finish looks clean against the steel.