Hunan Jia Shan Hardware Tech Co., Ltd.
| Supply Ability | 50000 pcs a week |
| Delivery Time | 15days |
| Packaging Details | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. |
| Name | Metal Screw |
| Standard | DIN,ASME,ASNI,ISO |
| Material | Steel,Stainless steel,Brass,Copper,Titanium Alloy,,Plastic |
| Finish | Polish,Passication,black ,galvanization,Chromate,Dacromet |
| Certificate | ISO9001:2008,ROHS |
| Used | Building Industry Machinery |
| Thread Type | Coarse, Fine |
| Usage | Fastening |
| Function | Connection,Fastening and Decoration |
| Strength | High |
| Size | Various sizes available |
| Measurement System | INCH,metric system |
| Place of Origin | China |
| Brand Name | JIA SHAN |
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Product Specification
| Supply Ability | 50000 pcs a week | Delivery Time | 15days |
| Packaging Details | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. | Name | Metal Screw |
| Standard | DIN,ASME,ASNI,ISO | Material | Steel,Stainless steel,Brass,Copper,Titanium Alloy,,Plastic |
| Finish | Polish,Passication,black ,galvanization,Chromate,Dacromet | Certificate | ISO9001:2008,ROHS |
| Used | Building Industry Machinery | Thread Type | Coarse, Fine |
| Usage | Fastening | Function | Connection,Fastening and Decoration |
| Strength | High | Size | Various sizes available |
| Measurement System | INCH,metric system | Place of Origin | China |
| Brand Name | JIA SHAN |
Galvanized Steel B7 B7M Nickel Plating Phillips Drive Cross Recessed Truss Head Machine Screw GB973
1,Description:
B7 is the ASTM A193/A193M "Alloy Steel and Stainless Steel Bolt Materials at High Temperatures" standard, which is applicable to alloy steel and stainless steel bolt materials on pressure vessels, valves, flanges and fittings used at high temperatures. The minimum yield strength is 723.45 (551.20) MPa; The elongation is 16 (18) %. The maximum hardness is HRC35 (HB235). The material is chromium-molybdenum alloy steel, with American grades 4140 and 4142 selected, which is equivalent to domestic 40CrMo
| Applications | |||||
| car | In high-strength applications such as automotive engines, heavy-duty machinery, and bridge construction, they are preferred for their larger support area and better anti-loosening performance. | ||||
| mechanical | Mechanical, electronic, automotive, construction and other fields, used to connect various mechanical parts, circuit boards, engines, transmissions, building structures, etc | ||||
| energy | For the energy industry, brackets and fixtures used to connect power generation equipment and transmission lines | ||||
| architectural | In the field of construction engineering, shipbuilding, and petrochemical industry, it is used to connect building structures, improve the navigation safety and stability of ships, and ensure the safety and stability of petrochemical equipment | ||||
The main purpose is to make industrial products composed of a fixed body, in the use of teeth and teeth often can not be close, too hard to lock the screw head is broken, or poor dental lock is not tight and failed to meet the conditions of use, are precision problems. Screws are "quantity products", not hand-made artworks, in mass production, in order to achieve high precision and stable quality and popular price supply to consumers for the purpose. The accuracy of the screws is usually 6g (Class 2, the US specification "IFI" is 2A teeth), and the rough screws used in construction projects are 8g (Class 3, "IFI" is 1A teeth).
3,Specifications:
| material | |||||
| aluminium | Aluminum has excellent thermal and electrical conductivity. However, aluminum is naturally soft and may produce gelatinous buildup after processing. If not properly operated, it is difficult to cut during processing. | ||||
| titanium | Edm machining is well suited for titanium because the process can withstand the viscosity of this alloy and break down lengthy chips. However, deionized water is needed as a medium to help control the heat generated during processing. | ||||
| steel | Steel is a very strong metal, and many manufacturers tend to use wire cutting machines instead of CNC machines for machining complex steel features. However, this material generates a lot of heat, so necessary precautions need to be taken. | ||||
| brass | Brass has a high tensile strength and is easy to cut by machine. But the cutting speed should be slow because it is a soft metal. | ||||
4,Feature Advantage:
B7 is the ASTM A193/A193M "Alloy Steel and Stainless Steel Bolt Materials at High Temperatures" standard, which is applicable to alloy steel and stainless steel bolt materials on pressure vessels, valves, flanges and fittings used at high temperatures. The mechanical performance standard grade A193 B7(or A193 B7M) has a corresponding minimum tensile strength of 861.25 (689.00) MPa. The minimum yield strength is 723.45 (551.20) MPa; The elongation is 16 (18) %. The maximum hardness is HRC35 (HB235). The material is chromium-molybdenum alloy steel, with American grades 4140 and 4142 selected, which is equivalent to domestic 40CrMo
5,About us
6.FAQ
A: We are factory and OEM are available.
A: Generally it is 7-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
A: 30% T/T in advance ,balance before shippment or L/C.
If you have another question, pls feel free to contact us as below:
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2007
Total Annual:
5000000-10000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of ... Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of ...
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