Standard: | DIN,ASTM/ANSI, BSW, JIS |
Coating | Zinc(Yellow,White,Blue,Black), Hop Dip Galvanized(HDG),Black Oxide, Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated, Polishing, |
Material | Stainless Steel: SS201, SS304, SS316; Carbon steel |
Delivery | within 15-30 days after confirm the order |
Packing | 1.25kgs per bag 2.25kgs per bag/carton with pallet |
OEM/ODM | we can provide customization service as your request |
Samples | Free Samples for standard fastener |
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.
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.

- Hex flange bolts are one-piece head bolts that are flat surfaced. The flange bolts eliminate the need to have a washer since the area under their heads. Hex flange bolts are greatly used in areas that are hard to reach since the flange does the work of a washer in distributing pressure.
- Flanged Hexagon Bolts are available in many different standards in different countries, both in metric sizes and inch size. The most popular flanged hexagon bolts are manufactured according to DIN 6921. This type of bolt is available in diameters ranging from M5 to M20, and lengths of between 10mm and 200mm. Flange diameters range from 11.80mm up to 43mm, with non-standard sizes also available on request.
- Flange bolts (washer bolts) have a flange cast into the bolt head, which acts in the same way as a washer, to spread the load over a wider area. Often used in car manufacturing for example, this type of bolt enables much faster installation on an assembly line than a traditional bolt and washer.
Hex Flange Bolts are typically used for automotive and construction applications. The flange directly underneath the hexagon-shaped head is designed to distribute the load and help protect the surface beneath and eliminates the potential need for a washer.






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.