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Yingfeng Fasteners (Nantong) Co., Ltd., as an enterprise specialising in the manufacture of high-quality fasteners, has long supplied customised screw products to Jinggong Steel Structure Group. Through its exceptional product quality and precise understanding of customer requirements, Yingfeng has become a permanent partner of Jinggong Steel Structure.
| Number | Model | Drill bit model | Thickness of the opening | Shank length | Fastening thickness | Gasket type | Corrosion resistance rating | Driver tool |
| C86022B1 | 14-14 TY-B | 2# | 2mm | 22mm | 32-100mm | Composite gasket | C3/C4 | T30 |
| C86022B1 | 12-14 TY-B | 3# | 5.8mm | 20-150mm | 10-140mm | Composite gasket | C3/C4 | T30 |
| C850LB2 | 12-24 TY-B | 5# | 12mm | 32-110mm | 17-95mm | Composite gasket | C3/C4 | T30 |
| C860LB1 | 14-14 TY-B | 3# | 5.8mm | 20-300mm | 10-290mm | Composite gasket | C3/C4 | T30 |
| C860LB2 | 14-20 TY-B | 5# | 12mm | 32-100mm | 17-185mm | Composite gasket | C3/C4 | T30 |
