The cup head square neck bolts are made on the multiple station cold header, and cut squeeze technology is used to get the square neck.
用多工位冷镦机生产半圆头方颈螺栓 ，对方颈部分的成形采用切挤成形工艺 ，用这种方法生产的产品 ，外形美观 ，质量稳定。
Round head low square neck carriage bolts.
半圆头低方颈螺栓。
Round head low square neck carriage bolts.
半圆头低方颈螺栓。
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