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.
