To improve the integrity and strength of assemblies, washers are often used along with screws. It was a great leap forward when screws and washers became pre-assembled into the SEMS screw.
This screw includes a free-spinning washer that is locked into place because the screw thread (created after the washer is put on) is larger than the hole of the washer.
SEMS are low cost, easy to use and are available from our company in many different sizes, styles, head types, drives, materials and other choices, depending upon your application needs.
Product Description
| Product Name | SEMS metal screws machine screw m4 |
| Size | Customized |
| Material | Aluminum, Stainless steel, Carbon Steel, or based on customers' request |
| Color | Silver or customized |
| Screw drive type | Customized |
| Application | Machine, building, medical, etc |
| Payment | T/T, L/C, Western union, Paypal, etc |
| Place of origin | Shenzhen, Guangdong, China |
| Delivery Way | By sea, by air, by express service |
Production Process
Why choose us
Our partners
Lanejoy was built in 2009, which owns over has over 10 years of experience manufacturing fasteners.
Our company is a professional large-scale producer of all kinds of metal precision parts. Since our establishment, we have established a good cooperative relationship with a plenty of famous brands all over the world.
Product diversity:
1. Precise digital electonic screws, nuts, used in consumer electronic products, such as cell phone / camera / hard disk / notebook, etc.
2. Multi-position cold heading: screws, and nuts, used for car seats, auotomotive parts, compressors and other parts.
3. CNC parts: mechanical structure, connection position, precision appearance, rotaing shaft, and knurling nut.
Workshop auotomatic machines:
50 sets of CNC lathes
70 sets of Bolt Formers machines
60 sets of Tapping machines
Our test equipment
Our certificates
The factory has obtained ISO9001, TS16946 in 2015, and stick to the ISO quality management system and evironmental management system. We make an effort to ensure the products and the factory's quality.
Packing
Sorting and packing, carton packing , pallet packing, and loading
