standard：heavy hex nuts astm a194
grade：2h
diameter： 1/2"-4"
surface treament：black, zinc plated, zinc (yellow) plated, h.d.g. etc.
material：carbon steel
our advantages：
1.offer professional items to meet customer's demand
2.high quality and strict quality control to our products .
3.factory directly sale with favorable price.
4.great variety of products and good after-sales service.
宁波鸿鼎金属制品有限公司
17855832455
中国 宁波