astm a563 heavy hex nuts;                           
astm a563 gr.a hex nuts with hdg;                                           
astm a563 10s heavy hex nuts;
standards:
astm a563 gr.a, gr.b, gr.c and gr.dh ,8s, 10s
grades:
a, b, c and dh
sizes:
1/2 to 3'
surface treatment:
plain, zinc, nickel, hdg, black, dacromet and mechanical zinc plating
colors:
white, red, blue and purple
packing:
gunny bags and carton box
competitive advantages
1). top quality control
2). competitive price
3). various of design
4). oem accepted
5). customer's design and logo are welcome

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宁波鸿鼎金属制品有限公司

15728045085
中国 宁波