




Common materials include carbon steel (Grade 4.8/8.8) for general use, stainless steel (A2/A4) for corrosion resistance, and alloy steel (Grade 10.9/12.9) for high strength.
Surface treatments vary: zinc plating (clear/yellow) provides basic rust protection, black oxide enhances wear resistance, and hot-dip galvanizing suits harsh environments.
For aesthetics or chemical resistance, nickel or chrome plating is used, while anodizing is typical for aluminum screws. These options ensure versatility across industrial, automotive, and marine applications.
Socket Head Cap Screw/Allen Screw/Allen Bolt | |
Standard: | DIN912 / ASME B18.3.1M / ISO4762 / JISB1176 |
Diameter: | All diameters available, as customer's requirement |
Length: | Custom |
Material: | Carbon Steel |
Grade: | 8.8 |
Thread: | Metric thread |
Finish: | Black |
Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
Application: | Structural Steel; Metal Buliding; Oil&Gas;Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating |
Equipments: | Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter,Spectrometer |
Supply Ability: | 300000 pieces/month |
MinimumOrder: | 500piseces |
Trade Term: | FOB/CIF/CFR/CNF/EXW/DDU/DDP |
Payment: | T/T, L/C, D/A , D/P ,West union,Paypal.etc |
Market: | Europe/South&north Amrica/East&South east Asia/Middle East/Australia and ect. |
Professional: | More than 20 years experience in fasteners industry and proficient in DIN/ASME/ASTM/IFI standard. |
Our advantage: | One-stop shopping; High quality; Competitive price; Timely delivery; Technical support; Supply Material and Test Reports; Samples for free |
Notice: | Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us |







Q1: Why choose us?
To provide our customers with first-class services in the supply of quality fasteners minimizing costs.
1.1. Vision: We wishes to build successful relations with our partners and be their first choice as an fasteners supplier.
1.2. Mission: professional customer service, and innovation in technology.
Further more, we do not only offer you fasteners with more reasonable quality and price than your expectations, but also would like to be your friend and to provide you market sales suggestion for your reference, if you have a better idea , please feel free to share with us.
Q2.How is quality ensured?
All our processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality , good at modern concept of management.
Q3:If you can not find on our website the product you need how to do?
You can send the pictures/photos and drawings of the products you need by email , we will check if we have them. We develop new models every month, Or you can send us samples by DHL/TNT, then we can develop the new model especially for you.
Q4:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?
Yes, we can, we can provide high precision parts and make the parts as your drawing.
Q5: How should I order and make payment?
By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.
Q6: What's your Delivery Time?
Standard parts: 7-15days
Non-standard parts: 15-25days
We will make the delivery as soon as possible with the guarantee quality.
Q7:How to Custom-made (OEM/ODM)
If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.
Q8:Which mode of transport would be better?
In general, the production are heavy, we advice to make delivery by sea, Also we respect your views of other transportation as well.