| Standard: |
DIN,ASTM/ANSI, BSW, JIS |
| Material |
Carbon steel, Stainless Steel: SS201, SS304, SS316/Steel Grade: DIN: Gr.4 SAE: Gr.2; |
| Finishing |
Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide, Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated, Plain polish |
| Delivery |
within 10-35 days after confirm the order |
| Samples |
Free Samples for standard fastener |
| OEM/ODM |
We accept OEM/ODM |
| Payment term |
30% TT in advance and 70% TT before shipment |

Screw: self tapping screws, self drilling screw, drywall screw, machine screw,chipboard screw, furniture screw,wood screw, concrete anchor screw, allen screw, stright wood sammy style screw, anti-corrosion bi-metal self drilling screw, pan head screw, button head screw,ect.
Bolt: hex bolt DIN933/931, flange head bolt DIN6923/6926, socket head cap bolt DIN912/DIN7991, carriage bolt DIN603, eye bolt DIN580, U bolt DIN3570, heavy hex bolt, achor bolt, T bolt, square bolt, hanger bolt, etc.
Anchor: wedge anchor, sleeve anchor, expansion anchor, drop in anchor, masonry anchor, rod hanging anchor, 3/4 fixed anchor, dyna anchor, nylon anchor, ect.
Nut : hex nut DIN934, flange nut DIN6923/DIN6926, nylon insert lock nut DIN985/DIN982, jack nut, spring nut, rivet nut, long nut, wing nut, square nut, weld nut, heavy hex nut, 2H nut, cap nut ect.
Washer :flat washer DIN125, spring washer DIN127, lock washer,square washer,spring lock washer, plain washer ect
Rod : threaded rod DIN975,DIN976, threaded bar DIN975 stud bolt, B7 stud bolt ect
All of our products can be made standard DIN, ASME, JIS, BSW, GB. Meanwhile we also support OEM as the drawing.
- Self-Drilling Screw: This screw has a drill bit-like tip that allows it to create its own pilot hole while being driven into the material. This eliminates the need for pre-drilling holes, making it a time-saving and efficient fastening solution.
- Zinc Plated Finish: The screw is coated with a layer of zinc for corrosion resistance. The zinc plating helps protect the screw from rust and other forms of corrosion, making it suitable for both indoor and outdoor use.
- Hex Washer Head: The screw has a hexagonal washer head with a built-in washer. This type of head provides a larger bearing surface and distributes clamping force evenly, reducing the risk of over-tightening or damaging the material being fastened.
- External Hex Drive: To install the screw, you'll need a tool with an external hex drive, such as a socket wrench or a nut driver. The external hex drive allows for easy and secure tightening.
- Sealing: The screw may have sealing properties or features, which means it's designed to create a tight seal when installed. This can be important in applications where a watertight or airtight seal is required to prevent moisture or other elements from entering the fastened area.
- Includes Washer: The screw comes with a washer included. This washer can help provide additional support, distribute pressure, and improve the integrity of the seal when the screw is installed


Xi'an Viber Exp & Imp Co., Ltd.
Xi'an Viber Import & Export Co.,Ltd, located in Xi'an , Shaanxi, is the starting point of the Silk Road Belt and Road, enjoying very convenient transportation.
We are a leading professional fasteners manufacture and supplier, we have own factory and dedicated to providing high-quality products and customized services to our global customer. With over ten years of experience in the industry.
Our main products are bolts, nuts, screws, anchors, and formwork accessories, washers, nails rivets and other accessories. We have set up bussiness relationship with professional customers in Middle east, Russia, Asia, Europe, Africa and America. We firmly hold our operational concept Sincerity , devotion , creativity , innovation,taking a quality-profitability development road under the guidance of scientific management.
We have ISO testing reports and QC team, bussiness certificates, import and export certification, rich production technology and OEM experience. we are committed to delivering high-quality products, innovative design, and attentive service. We eagerly anticipate fostering long-term partnerships with you.




1. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
2.what can you buy from us?
Fastener/screws , bolts, nuts and washers,catering to diverse industry needs and we provide extensive OEM/ODM support
3. why should you buy from us not from other suppliers?
Viber is a professional manufacturer specializing in research, development, manufacture, and servicing of solar mounting systems. we have professionally designed products to handle all systems as well as to ship goods in a timelymanner.
4. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Language Spoken:English,Chinese,Bengalese,Korean,Japanese,Arabic,French,Russian,,Spanish,
5.What is your payment method?
30% value of T/T in advance and other 70% balance on B/L copy. For small order less than 1000USD, would suggest you pay
100% in advance to reduce the bank charges.
6.Do you support customization?
Yes, we can produce according to drawing or sample.