1/4-20 X 5/8" 馬車螺栓 | 全牙 | A307 Grade A 鍍鋅鋼 (500 顆/包)

The square neck on these bolts seats perfectly into the wood, so I didn’t have to wrestle with a wrench to keep them from spinning while tightening. The zinc plating looks clean and uniform across all 500 pieces, and threading into pre-drilled holes was smooth without any binding.

Had a small woodworking project that needed these exact carriage bolts, and they drove in cleanly without spinning. The zinc plating looks consistent across the whole batch, and all 500 arrived in good shape.

The square neck under the head really does its job—these bolts sunk into my wood project and didn’t spin a millimeter while I tightened the nut. For five hundred pieces, the zinc coating looks evenly applied across the batch, and not a single one had a burr on the threads.