tianhong Customized High-quality multi-series hex socket bolts
High-quality multi-series bolts including carriage bolts, hex socket carriage bolts, hex socket cylinder head screws and torx cylinder head hollow...
Electric meter screws are created using a cold heading and cold forging production process, ensuring that they are strong, durable, and long-lasting. This process also helps to maintain the integrity of the screw's threads, making it easier to install and remove as needed.
Small chamfer edge, special drive slots (11-slot / Phillips / slotted), hole/non-hole design, one-way / break-off anti-disassembly, stable locking, non-destructive opening impossible, traceable sealing.
Zhejiang TNHO fasteners offer full series of tamper seal screws, including 11-slot, Phillips, slotted drives, step head / flat head / large head styles, with hole / non-hole, break-off, one-way anti-tamper structures. Widely used for high/low voltage equipment, water/gas meters, auto parts, home appliances and electronics, ensuring anti-tampering, safety and traceability.
| System of Measurement | Inch, Metric |
| Material | Stainless Steel, Carbon Steel, Steel, Brass, Iron, Aluminum |
| Thread Size | Metric: M1-M16; or customized |
| Head Type | Pan Head, Hex Head, Slotted Head, Torx Head, One-Way Head, Step Head, Flat Head, Large Head |
| Surface Finishing | Zinc Plating, Nickel Plating, Black Oxide, Dacromet |
| Production Process: | Cold Heading, Cold Forging，Cold Forming |
| Standard | ISO, JIS, GB, ANSI, BSW, DIN, Non-standard customized |
| Grade | 4.8, 6.8, 8.8, 12.9, etc |
| Brand | TNHO |
| Application | Electric Meter, Electrical, Electronic, Auto Parts, Renewable Energy Industry, etc. |
1.Full product range: One-stop supply of all tamper seal screws, covering 11-slot, slotted, Phillips, break-off, one-way, hole/non-hole types.
2.Customization capability: Support non-standard drawing customization, adjustable thread, head, material, surface finish and length.
3.Stable quality: Strictly follow ISO/GB/DIN standards, complete grade control, stable performance for anti-tamper sealing.
4.Industry experience: Focus on fasteners for electric power & metering, mature technology for seal screws, reliable for bulk orders.
5.Efficient service: Fast quotation, on-time delivery, professional after-sales support, suitable for global wholesale & OEM/ODM.
Complete terminal screw series
One-stop supply of flat head, pan head, slotted, 11-slot, set screws and special terminal screws.
Mature cold forming process
Professional cold heading & cold forging production, stable quality and high consistency in batch.
Flexible customization
Support custom size, material, surface treatment, head type and non-standard design.
Mature Manufacturing
Comply with international standards (ISO, DIN, GB, ANSI), stable performance for electrical industry.
Authoritative certifications
ISO 9001, ISO 14001, ISO 45001 and IATF 16949 certified, ensuring reliable quality management.
Professional service
Fast quotation, on-time delivery, OEM & ODM acceptable, long-term cooperation support.
