400/2100 M1.6 M2 M2.5 M3 M4 Black Grade 10.9 Steel Hexagon Hex Socket Flat Countersunk Head Screw Bolt Nut Washer Assortment Kit

Items Description

Material

Grade 10.9 carbon steel

Surface：oxide black

Set A : total 400pcs

screw 200pcs + nut 200pcs:

Set B : total 625pcs

screw 625pcs

Set C : total 1140pcs + 4pcs hex key (free)

screw 380pcs + nut 380pcs + washer 380pcs + hex key 4pcs:

Set D : total 2100pcs + 4pcs hex key (free)

screw 700pcs + nut 700pcs + washer 700pcs + hex key 4pcs:

FAQ:

1.How long will my package send out?

We will send out as soon as possible, Usually all the package will be send out within 48 hours.

2. Wholesalers and retailers are welcomed.

For wholesale, just please contact to us, we will offer discount. If you are a retailer and want make your own business, we could send the goods to your customers directly and won't leave information about us if you'd like to.

3.What should I do if I don't receive my item? Or the product has some problem?

Please contact us first, we will do our best to solver it, we would like to offer full refund or resend it for you. We are honest seller, so don't worry.

4.How to do when I measure the size is smaller than ordered?

Usually the screw will be look smaller, If you use the original rule to measure the screw, maybe it will have error, it will be look smaller. The correct way to measure the screw is by vernier caliper.

5.The stainless steel fastener can be attracted by a magnet.

Most people think the stainless steel can't be attracted by a magnet. But the stainless steel has many systems, some can’t be attracted by magnet, but some can. And the stainless steel will have a little magnetic after it made to screw or other thing. If need the stainless steel can't be attracted by a magnet, Demagnetization is required. The correct way to discern it is stainless steel or not is useing spectroscopic instruments or potions.

Please trust us, we only sell the high quality stainless steel fastener.