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  • Jiaxing City Qunbang Hardware Co., Ltd
    BOSSARD
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  • Li
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Contact Person : Lance
Phone Number : +86-13511332403
WhatsApp : +8613511332403

High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30

  • High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30
  • High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30
  • High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30
  • High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30
  • High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30
Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number DIN
Minimum Order Quantity 900kg
Price Negotiation
Packaging Details 25kg Carton+900kg/Pallet
Delivery Time 30days
Payment Terms L/C, T/T, Q/A
Supply Ability 200TON/MONTH
Product Details
Material Stainless Steel, Brass, Carbon Steel, Alloy Steel, Stainless Steel304 Size M3-M30
Grade Plain, Etc., HDG, Black, Yellow Zinc Plated Advantage We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided
Color Silver, Blue, Yellow, Silver Or Black Color, Black Delivery Time Within 30days
Oem Welcome, According To Your Request, Accept
High Light

grade 12.9 black hexagon bolts

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m6 black hexagon bolts

,

m30 black hexagon bolts
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Product Description

Blackening, also known as boiling blackening or bluing, is a method of finishing steel. The coating film is formed by the reaction between the liquid medicine and the material of the workpiece itself. The thickness of the film after oxidation treatment is 0.5-1.5 microns, which has no significant influence on the size and accuracy of the parts. Oxidation treatment of iron and steel parts is widely used in the general protection and decoration of mechanical parts, precision instruments, cylinders, springs, weapons and daily necessities. Its film wear resistance is better, dark and shiny, extremely beautiful.

Screw Thread
d
M3 M4 M5 M6 M8 M10 M12 (M14) M16 (M18) M20 (M22) M24
P Pitch
α tol.(+2)
b L≤125mm
125＜L ≤ 200
L＞200
dk max=nominal size
min
ds max=nominal size
min
e min
k max
s Nominal Size
min
max
t max=nominal size
min
0.5 0.7 0.8 1 1.25 1.5 1.75 2 2 2.5 2.5 2.5 3
90° 90° 90° 90° 90° 90° 90° 90° 90° 90° 90° 60° 60°
12 14 16 18 22 26 30 34 38 42 46 50 54
/ / / 24 28 32 36 40 44 48 52 56 60
/ / / / / 45 49 53 57 61 65 69 73
6 8 10 12 16 20 24 27 30 33 36 36 39
5.7 7.64 9.64 11.57 15.57 19.48 23.48 26.48 29.48 32.38 35.38 35.38 38.38
3 4 5 6 8 10 12 14 16 18 20 22 24
2.86 3.82 4.82 5.82 7.78 9.78 11.73 13.73 15.73 17.73 19.67 21.67 23.67
2.3 2.87 3.44 4.58 5.72 6.86 9.15 11.43 11.43 13.72 13.72 16 16
1.7 2.3 2.8 3.3 4.4 5.5 6.5 7 7.5 8 8.5 13.1 14
2 2.5 3 4 5 6 8 10 10 12 12 14 14
2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025 10.025 12.032 12.032 14.032 14.032
2.1 2.6 3.1 4.12 5.14 6.14 8.175 10.175 10.175 12.212 12.212 14.212 14.212
1.2 1.8 2.3 2.5 3.5 4.4 4.6 4.8 5.3 5.5 5.9 8.8 10.3
0.95 1.55 2.05 2.25 3.2 4.1 4.3 4.5 5 5.2 5.6 8.44 9.87

 

 

 

The advantages of QBH

  • QBH brand sales to the main quality assurance.
  • Years of export trade management, excellent service, word-of-mouth guarantee.
  • By working with TUV,escort for quality.
  • Customization of non-standard parts can be made according to customer's requirements and drawings.
  • For quality customers,we can provide a certain credit period.

 

High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30 0High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30 1High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30 2High Strength Screws External Black Hexagon Bolts Grade 12.9 M6-M30 3

 

 

 

FAQ

1. How do you let me trust you.
 
Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.
 
 
2. How about your price.
 
We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.
 
 
3. How do you control your quality.
 
Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods
 
 
4. Could you provide free samples?
 
For new customer, We can provide free samples for standard fastener, But the clients will pay the express
charges. For old customer, We will send you free samples and pay express charges by ourself.
 
 
5. Do you accept small order?
 
QBH company can accept small orders if we have them in stock.Generally speaking,the stock probability of stainless steel fasteners is higher than that of carbon steel fasteners.
 
 
6. How about your delivery time
 
What we pursure is the high efficiency movement pattern,the stainless steel fastener delivery time about 15days,the carbon steel fastener will it about 30days
 
 
7. What is your packing.
 
Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information
such as LOGO and pattern of customers.
 

 

 

 

 

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