1/2" X 3/8" 內六角肩螺絲 | 內六角頭 | 內六角驅動 | 18/8 不鏽鋼 (25個/包)

The packaging held 25 pieces that all arrived clean and dry, and the 18/8 stainless steel finish looks exactly like the photos. Used a few as precision pivot pins in a small jig and the ground shoulder spun true with zero wobble. Worth the price for the quality.

Finally, a shoulder screw that doesn’t wobble when I use it as a pivot for a small hinge. The hex socket drive made tightening them into tight spots a breeze, and the 18/8 stainless finish looks clean even after a few days in my shop.

The precision-ground shoulder on these screws made them ideal for a small axle I was building—smooth rotation and zero wobble. Much cleaner than standard set screws I’ve used before.