1.item no.: iso7380 ,hex socket button head screws 

2.material : alloy steel ,carbon steel 

3.port : ningbo /shanghai 

4.origin of place : zhejiang 

5.packing :25kg for carton bulk, then pallets  

6.size : m3------m56   

7.material : carbon steel 

8.thread: unc, unf, and bsw 

9.grade : 4,6,8 

10.colour : plain,yellow zinc-plated,black

11.packing:25 kg carton bulk, then pallets or packing according to customers 

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