Audited Supplier
China Wholesale Concrete Self Tapping Hex Head Flange Bolt with Grade SS304, SS316 Stainless Steel or Carbon Steel Materials
Advantages:
1. The screw surface is smooth, with no metal burrs on the surface.
2. The thread pitch is uniform, the pattern is clear, the force is uniform, and the strength is higher and stronger
3. High quality surface treatment, environmentally friendly and safe plating. Surface customized: H.D.G hot dip galvanized, zinc plated(blue, yellow,etc.), black oxide, chrome, etc.
4. Standard circular hole, more convenient to use, easy to install and tighten by hand.
5. M6-M20 screw dimensions optional
6. Material Optional: Stainless Steel/Carbon Steel/Alloy Steel/High Strength Steel, etc.
7. Standard: ASTM/ANSI, DIN, GB, AS, JIS
Screw Size Chart:
| Standard | Size | Model | Head Thickness | Opposite Diameter Min | Diagonal Diameter |
| GB6170 | M6 | A | 3.85-4.15 | 9.78 | 11.05 |
| M6 | B | 3.76-4.24 | 9.64 | 10.89 | |
| M8 | A | 5.15-5.45 | 12.73 | 14.38 | |
| M8 | B | 5.06-5.54 | 12.57 | 14.2 | |
| M10 | A | 6.22-6.58 | 15.73 | 17.77 | |
| M10 | B | 6.11-6.69 | 15.57 | 17.59 | |
| M12 | A | 7.32-7.68 | 17.73 | 20.03 | |
| M12 | B | 7.21-7.29 | 17.57 | 19.85 | |
| M16 | A | 9.82-10.18 | 23.67 | 26.75 | |
| M16 | B | 9.71-10.29 | 23.16 | 26.17 | |
| M20 | A | 12.28-12.71 | 29.67 | 33.53 | |
| M20 | B | 12.15-12.85 | 29.16 | 32.95 | |
| DIN931-1/933 | M6 | A | 3.85-4.15 | 9.78 | 11.05 |
| M8 | A | 5.15-5.45 | 12.73 | 14.38 | |
| M10 | A | 6.22-6.58 | 15.73 | 17.77 | |
| M12 | A | 7.32-7.68 | 17.73 | 20.03 | |
| M16 | A | 9.82-10.18 | 23.67 | 26.75 | |
| M20 | A | 12.28-12.71 | 29.67 | 33.53 | |
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Changzhou Ningsheng Hardware & Electrical Appliance Co., Ltd. is a professional hardware manufacturing company specializing in wedge anchor bolts and other fastener parts. The company covers an area of 15,000 square meters and is located in Hengshanqiao Town, Changzhou Economic Development Zone, Jiangsu Province.
Since its establishment in 2000, the company now has more than twelve mature automatic production and assembly lines, with an annual output of more than 7000 tons of hardware accessories. The company's main products include: various types of wedge anchor bolts(GB/DIN/ANSI), the hex bolts, the screw, the washers and other products.
Our factory has always been based on good faith management, product quality as the core, customer demand as the guidance, to provide customers with cost-effective products. At present, it has provided high quality products and services for many retailers and many well-known elevator manufacturers in China so far.
Our logistics and packaging are reliable and trustworthy!
The company has a group of high-quality technical personnel, sophisticated equipment, perfect monitoring facilities. We also have GB/T19001-2008/ ISO9001:2008 international quality system certification.
