TNHO Large Washer Nuts for High Voltage Electrical Equipment
These large washer nuts are produced by cold heading and cold forging, featuring high strength, stable thread and long service...
TNHO brand knurled inserts are precision-engineered for reliable fastening in plastic, wood, and metal substrates. Their knurled surface enhances grip and prevents loosening, solving common tapping issues. Available in multiple materials, head types, and thread sizes, these inserts support standard and fully customized solutions. Ideal for electric meters, auto parts, electronics, and renewable energy industries.
TNHO Knurled Inserts are designed to provide strong, long-lasting internal threads in soft or brittle materials like plastic and wood. Using pre-embedding, hot melting, or in-mold injection, the knurled surface increases friction and bite, ensuring secure assembly without slipping. Manufactured via cold heading and precision forming, these inserts offer high dimensional accuracy and mechanical stability. Available in metric (M1–M16) and inch sizes, with head types including pan, hex, torx, flat, and more. Surface finishes like zinc plating, nickel plating, and black oxide enhance corrosion resistance. With ISO, DIN, ANSI, and custom standards supported, TNHO inserts are trusted in electric meters, electronics, automotive, and renewable energy sectors. Some models match or exceed imported alternatives, making them ideal for high-end manufacturing.
| 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.Superior Stability : The knurled surface increases friction with the substrate, preventing loosening and eliminating tapping slip issues.
2.Diverse Material Options: Available in stainless steel, carbon steel, brass, etc., to suit different environments (corrosion resistance, cost-effectiveness).
3.Flexible Specifications & Customization: Supports metric (M1–M16) and inch thread sizes, all head types, and full customization per drawings/samples.
4.Precision & Reliable Craftsmanship: Advanced cold forming and precision testing ensure dimensional accuracy and mechanical stability.
5.Easy & Efficient Installation: Compatible with multiple installation methods (pre-embedding, hot melting, in-mold injection), no complex tools, suitable for automated production.
Strong Brand & Qualification
Founded in 1987, TNHO is an ISO9001-certified brand with decades of experience and industry recognition.
High Production Capacity
Equipped with Taiwan-made precision machinery, supporting mass production and custom orders with short lead times.
Leading R&D
Professional team with 25 patents; some products meet or exceed imported standards, serving well-known enterprises.
Efficient Supply Chain & Location
Located in Yueqing’s fastener industrial zone, ensuring fast procurement and global delivery.
Strict Quality Control
Full-process inspection guarantees dimensional accuracy and consistent quality.
Comprehensive Service
One-stop service including consultation, customization, sample delivery, and after-sales technical support.
