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304 stainless steel countersunk head six angle screw DIN7991M12 stainless steel flat cup flat head six corners screw

Link price is a unit price; countersunk head six corner specification: M12*20 refers to the diameter of 12mm, including head length 20mm, other specifications and so on. Because the entity store inventory is not stable, please do not shoot directly, there is a need for friends, please want to negotiate or call 028-87625638, thank you!

price:USD$5.50
discount 70% in 2018-09-22 to 2018-09-24
price: USD$ 3.85
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:3
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The world is so big, Hainan is so wide that you see us, it is fate; from the emotional interaction, please pay more attention to us, contact us, even if it is only the "Ding Dong" sound, let us know your arrival, perhaps, you will find a different surprise. Sales Hotline: 028-87625638, we can according to your requirements to customize all kinds of non-standard parts, we willDelivery as soon as possible.

Our large number of wholesale sales of stainless steel fasteners, to ensure material, quality assurance.

Spot a sell, large amount of discount.

This shop promise: the material in question, on approval. Quality problems, on approval. Let buyers worry free shopping!

Large volume, you can consult the customer service, we will according to your quantity to you the most favorable wholesale price.

According to customer requirements, different specifications of stainless steel fasteners and non-standard parts are made! Specific consulting customer service!

Commodity parameter

There are positive and negative tolerances, especially the attention of the beat, screw reference specifications by D*L (diameter * total length) nut to the matching screw diameter is prevailSetting: mm
Nominal diameterM3M4M5M6M8M10M12M14M16M18M20
pitch0.50.70.811.251.51.75222.52.5
dkmax68101216202427303336
min5.77.649.6411.5715.5719.4823.4826.4829.4832.3835.38
Snominal22.53456810101212
max2.12.63.14.125.146.146.17510.17510.17512.21212.212
min2.022.523.024.025.026.028.02510.02510.02512.03212.032
tmax1.21.82.32.53.54.44.64.85.35.55.9
min0.951.552.052.253.24.14.34.555.25.6
amax92°
min90°

 

You ask me to answer

Question 1

Why does 1. stainless steel bring magnetism?

304 stainless steel belongs to austenitic stainless steel, austenite is partly or slightly transformed into martensite in cold working process
Martensite is magnetic, so 304 stainless steel is non-magnetic or micro magnetic. Concrete can

Baidu inquires 304 stainless steel why magnetism.

Question 2

2. how to identify authentic 304 stainless steel products?

Support the detection of 304 stainless steel special detection liquid.
Support chemical composition analysis and spectrum analysis.
Support smoke test, simulate the actual use environment.

Question 3

3. what are the most commonly used stainless steel?

.201 stainless steel, suitable for use in the dry environment, easy to rust when encountering water.
304 stainless steel, outdoor or humid environment, corrosion resistance, strong acid resistance.
316 stainless steel and molybdenum, more corrosion resistance and pitting corrosion resistance, especially suitable for seawater and chemical media.

Shopping tips:

      Intimate, small shops run with solid stores,All baby parameters, freight mode and the specific amount of freight are based on the actual situation,If the buyer is confused, please contact us promptly.Please do not shoot directly, thank you! For no communication or communication is not clear buyers, our shop will not be shipped, thank you!

   

About delivery:

1, every afternoon before 17:00 take payment orders on the day of delivery (non-standard parts except), Saturday day normal delivery (such as special cases, the customer service will be the first time to truthfully inform the customer)

2, our default express is excellent speed express, expected arrival time to express speed prevail, generally 2-5 days! Urgent advice to make up the difference by Shunfeng express!! The election of Tong, tact, Shen Tong, E Po please note, if not to our automatic forwarding courier without notice; remote areas should also express delivery charges, we can not predict the specific costs, to the provisions of the local courier company shall prevail.

      3、Chengdu around the shopping amount of more than 100 yuan buyers, the shop can sendYu Dongfeng, Changji, lizhan three freight DepartmentCollection on behalf of. If you want to send other freight department buyers, please contact the seller to negotiate the specific delivery, thank you!

Disclaimer

1. All the pictures in this store are for reference only. The slight color difference and size may be caused by the display, light, personal understanding of the color and the sensory size of the productetc.Problems are not part of the quality problem.The color and size of the product are the final product.

2, the general screw directly to the threaded part thickness, in the production and the national standard, the diameter of the screw are under tolerance; such as 11.7mm, 11.8mm and 11.75mm belong to 12mm 9.7mm, 9.8mm, 9.75mm screws, 10mm screws are. If buyers can not accept the above point of view, please carefully shopping, thank you!