TNHO Serrated Flange Hex Nuts & Lock Nuts for Fastening
Our serrated flange hex nuts, nylon insert lock nuts and plain flange nuts are made of high-strength steel with zinc,...
Our customized carriage bolts and knurled shank hex bolts are professionally manufactured for electric meter box, cabinet and power equipment assembly. The product range covers multiple specifications including M6, M8, M10 with varying lengths from 50mm up to ultra-long 560mm. Available in round carriage head, hex head, socket carriage head and middle knurled shank design, these bolts adopt hot-dipped galvanized or zinc-plated carbon steel for outstanding rust resistance. Knurled shank effectively prevents spinning during installation, ensuring stable locking and long-term fastening reliability for outdoor power meter enclosures.
| System of Measurement | Metric |
|---|---|
| Material | Medium Carbon Steel, Low Carbon Steel |
| Thread Size | M6, M8, M10, custom non-standard thread available |
| Length Range | 50mm~560mm, customized ultra-long size |
| Head Type | Round Carriage Head, Hex Head, Socket Inner Hex Carriage Head |
| Shank Style | Full Knurled Shank, Partial Knurled Shank, Smooth Shank |
| Surface Treatment | Hot-Dip Galvanized, Electro Zinc Plating |
| Production Process | Cold Heading, Thread Rolling, CNC Machining |
| Executive Standard | DIN, GB, ISO, ANSI, non-standard drawing customization |
| Grade | 4.8 Grade, 6.8 Grade |
| Application | Electric Meter Cabinet, Power Distribution Box, Outdoor Electrical Equipment |
1.Anti-rotation knurled shank design: Vertical knurl on bolt shank bites tightly into mounting hole to avoid bolt rotation during nut tightening operation.
2.Diversified head and structural options: Multiple head types and optional tail sealing hole satisfy anti-theft lead seal demands of various electric meter cabinet products.
3.Premium anti-corrosion surface treatment: Hot-dip galvanized and zinc plating finishes effectively resist rust under outdoor humid, rainy and temperature alternating environments.
4.Wide customizable length specification: From short 50mm standard size to extra long 560mm customized bolt to match all kinds of large meter cabinet assembly needs.
5.Precision rolled uniform thread: Thread rolling craft ensures consistent tooth pitch for smooth assembly and strong anti-loosening performance under long-time equipment vibration.
Professional meter cabinet targeted development
Designed according to power industry installation habits to perfectly match most domestic and imported electric meter box assembly standards.
Strong adaptability to complex working environment
Galvanized surface greatly extends service life for outdoor mounted meter cabinets exposed to wind, rain and moist atmosphere all year round.
Powerful one-stop OEM customization capability
Accept custom size, shank knurl range, head shape and surface treatment based on customers’ technical drawings and samples.
Strict dimensional tolerance control during production
Mature cold forging processing reduces size error and improves assembly efficiency for automated cabinet production lines.
Complete existing ready stock of mainstream sizes
Common specifications like M6/M8/M10 have finished inventory to support customers’ small-batch urgent order delivery rapidly.
Dual anti-loosening & anti-theft comprehensive function
Combined knurled anti-spin structure and optional tail lead seal hole realize both fixed fastening and meter tamper-proof security requirements.
