Hongxu Hardware Co., Ltd
Hongxu Hardware Co., Ltd（Jiaxing Hongxin Trading Co.,Ltd）
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Indented hex washer head,self drilling screw, C-1022 Steel, case hardened,#3,oint W/ OD Steel neoprene washer,ZP
Product Description:
As a drilling production plant, we have been committed to the R & D and production of drilling products. The company has a strict quality management system
The tail of the drilling screw is in the shape of drilling tail or pointed tail, without auxiliary processing, and can be drilled, tapped and locked directly on the setting materials and foundation materials, greatly saving construction time. Compared with ordinary screws, they have high drawing force and maintenance force, and they will not loosen for a long time after combination. It is easy to use safe drilling and tapping to complete the operation at one time.
Drill tail screw
1. Core hardness: Standard: hrc32-40 the actual measurement of the company's products is hrc31.7-39.0.
2. Surface hardness: Standard: hv600-700 the actual measurement of our company's products is about hv620.
3. Permeable layer: 4 × 5-6 × 0.05-0.18mm 8 × 5-12 × 0.10-0.23mm 14 × 0.15-0.28mm
4. Torque: specification, drill tail, screw, type bsdtype csdinch-lbkg-cminch-lbkg-cm4 ා (2.9) 141614166 ා (3.5) 24824288 ා (4.2) 4248485510 ා (4.8) 6170657512 ා (5.5) 9210610011514 ා (6.3) 150173156180.
Specification:
| Item Name | Indented hex washer head self drilling screw |
| Head | Hex Head |
| Standard | DIN7504K |
| Material | Carbon steel(35#,45#,Q235) |
| Surface | ZP |
| Thread size (d) | s max min | dc max min | k max min | h max min |
| 4.2 | 7.0 6.8 | 8.8 8.1 | 7 6 7.78 | 0.8 |
| 4.8 | 8.0 7.8 | 10.5 9.8 | 8 7.78 | 0.9 |
| 5.5 | 8.0 7.8 | 11 10 | 8 7.78 | 1 |
| 6.3 | 9.5 9.3 | 13.5 12.2 | 10 9.78 | 1 |
Application:
1. It has good properties of high strength, corrosion resistance, high temperature resistance and durability
2. Products are widely used in Automobile, electronics, communication, medical treatment, electromechanical, energy and other fields.