Supply hex washer head self drilling screws sale quotes
- NEWSTARWDH
- CHINA
- 7-35 DAYS
- 5000 TONS
Hex washer head self-drilling screws are mechanical basic parts and are in great demand. Usually self-drilling screws are used to ensure safety or generally do not consider the adverse effects of temperature or other dangerous conditions. Commonly used materials are carbon steel and stainless steel. However, in certain occasions, fastener materials need to meet severe corrosion or high strength conditions, and many stainless steel and ultra high strength stainless steels have emerged.
Hex Washer Head Self Drilling Screws
Product Parameters
Standard: | ASME B18.6, DIN7504K， DIN7504P，DIN7504N |
Size: | #4(2.8)-1/2" |
Material: | Carbon Steel, Alloy Steel, Stainless Steel |
Length: | 10-180mm (3/8”- 7”) |
Head type: | hex , hex washer |
Drive type: | hex socket |
Screw type: | BSD, CSD |
Finish: | Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G |
Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
Application: | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating |
Equipments: | Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter |
Supply Ability: | 5000 tons per month |
MinimumOrder: | 500kgs for each specification |
Trade Term: | FOB/CIF/CFR/CNF/EXW/DDU/DDP |
Our advantage: | One-stop shopping; OEM |
Notice: | Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us |
Description
Product name | Self Drilling Screws |
Place of origin | China(Mainland) |
Brand Name | NEWSTARWDH |
Port | Qingdao or according to requirement |
Delivery time | Normally in 7-35 days, according to quantity |
MOQ | 500kgs for each specification |
Mark | According to customer’s requirement |
OEM | Available |
Hex washer head self drilling screws need to pay attention to the following six problems when using maintenance:
1. Hex washer head self drilling screws This process is very important, need to be very careful, there will be residues left on the surface of Hex washer head self drilling screws. This step of rinsing is done after the silicate cleaner has been cleaned.
2. Hex washer head self drilling screws stacking in the tempering heating process, otherwise it will cause slight oxidation in the quenching oil.
3. The phosphide white residue will appear on the surface of the high-strength screw, indicating that the inspection at the first point is not careful enough.
4. There will be blackening on the surface of the parts to cause chemical reversal, indicating that the work in the heat treatment is not done well, and the alkaline residue on the surface is not completely removed.
5. The standard parts of the parts will be rusted during rinsing, and the water used for rinsing should be replaced frequently.
6. Excessive rusting indicates that the quenching oil has been used for too long, and it is necessary to add new oil or replace it.
Quality control
our company strictly complies with ISO9001 system. All our products are subjected to strict test and inspection in each process by the workers periodically, starting from the raw materials delivered to the factory.
Test Report
If you require, the test report form the third part is available
Packaging Details:
A.
| SIZE | KGS/CTN | KGS/CTN |
| 24CTNS/PALLET | (11-22)KGS/CTN | 0.47 |
| 48CTNS/PALLET | (11-17)KGS/CTN | 0.35 |
| 36CTNS/PALLET | 15KGS/CTN | 0.33 |
| 30,40,50CTNS/PALLET | 15KGS/CTN | 0.35 |
| 36，48CTNS/PALLET | (10-22)KGS/CTN | 0.36 |
| 1CTN/PALLET | 803KGS/CTN | 4.55 |
| BAG | 25KGS/BAG |
B. According to customer special demand.
We also accept customization order according to your samples and drawings
If you have other questions or concerns, please feel free to contact us.
