ISO 7380-2 Button Flanged Socket Head Cap Screw Steel Class 10.9 Zinc Plated

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number ISO 7380-2
Minimum Order Quantity 900kg
Price Negotiation
Packaging Details 25KG/CTN,36CTN/PALLET or small packing
Delivery Time 30DAYS
Payment Terms L/C, T/T
Supply Ability 500TON/MONTH

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Product Details
Material 10B21/40CR Standard ISO 7380-2
Packing Carton And Pallet Or According To The Customer's Requirement Sample Free Sample
Thread Machine Thread Lead Time Per On Order Quantity
Type Hexagon Head Advantage We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided
Oem Yes,welcome
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Button Flanged Socket Head Cap Screw


ISO 7380-2 Button Head Screw


Steel Class 10.9 Button Head Screw

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Product Description

ISO 7380-2 Button Flanged Socket Head Cap Screw, Steel Class 10.9, Hex Socket, Zinc Plated, Metric Coarse

ISO 7380-2 - 2011 Hexagon Socket Button Head Screws With Collar


         QBH Socket head cap screws are commonly used in machine assembly for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive.Longer caps are easier to see when fastened, while button and flat head caps are less likely to snag clothing or linkages. Cap screws with a black oxide or armor coat finish resist corrosion.

        Socket button head cap screws ISO 7380 are not intended for high strength application. The purpose of producing them with a strength of the property class 10.9 is to increase the wear resistance of the sockets.


ISO 7380 : 2004 Hexagon socket button head screws,which was prepared by ISO/TC 2 ‘Fasteners’ of the International Organization for


Standardization, has beenadopted by Technical Committee CEN/TC 185 ‘Threaded and non-threaded mechanical fasteners andaccessories’, the


Secretariat of which is held by DIN, as a European Standard.
Tightening Procedure:
Insert the key into the socket and apply the torque on the nut while holding the key. Should however, the torque be applied on the screw itself it should be reduced accordingly.
R.S. Torque = Recommended SeatingTorque


ISO 7380-2 Button Flanged Socket Head Cap Screw Steel Class 10.9 Zinc Plated 0


Unit: mm


Screw Thread
M3 M4 M5 M6 M8 M10 M12 M16
P Pitch
b Ref.
h max
dc max
dk max
ds max
e min
k max
s Nominal Size
t min
Minimum tensile load(N) 8.8
0.5 0.7 0.8 1 1.25 1.5 1.75 2
18 20 22 24 28 32 36 44
0.7 0.8 1 1.2 1.5 2 2.4 2.8
0.55 0.65 0.8 1 1.25 1.7 2.1 2.5
6.9 9.4 11.8 13.6 17.8 21.9 26 34
6.32 8.82 11.1 12.9 17.1 21.06 25.16 33
5.2 7.2 8.8 10 13.2 16.5 19.4 26
4.9 6.8 8.4 9.6 12.8 16.1 18.9 25.5
3 4 5 6 8 10 12 16
2.86 3.82 4.82 5.82 7.78 9.78 11.73 15.73
2.303 2.873 3.443 4.583 5.723 6.863 9.149 11.429
1.65 2.20 2.75 3.3 4.4 5.5 6.60 8.80
1.40 1.95 2.50 3.0 4.1 5.2 6.24 8.44
2 2.5 3 4 5 6 8 10
2.080 2.58 3.080 4.095 5.140 6.140 8.175 10.175
2.020 2.52 3.020 4.020 5.020 6.020 8.025 10.025
1.04 1.3 1.56 2.08 2.6 3.12 4.16 5.2
3220 5620 9080 12900 23400 37100 53900 100000
4180 7300 11800 16700 30500 48200 70200 130000
Combined gauging of socket dimensions and , see ISO 23429
②,80% of the values specified in ISO 898-1



       Stainless steels can be divided into three groups of steel - austenitic. ferritic and martensitic. Austenitic steel is by far the 


mostcommon type (>90% of commercial fasteners). The steel groups and strength classes are designated by a four-digit


sequenceof letters and numbers (eg A2-70) as shown in the following table. DIN EN ISO 3506 governs screws and nuts made


fromstainless steel.













Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements




EURO Pallet





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.



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.
8. What is your payment term
Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.
Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately