| Standard | DIN 957, ISO 261, DIN 13 |
| Grade | 8.8 |
| Surface Treatment | YZP |
Product Introduction
Standard Name: Threaded Rod (Full-Threaded Rod).
Common Names: Blue-White Zinc/Multi-Color Zinc Threaded Rod, Through-Thread Screw, Threaded Screw.
Product Definition: A rod-shaped fastener with continuous threads along its entire length, designed for cutting and use with nuts. YZP denotes a blue-white zinc (multicolor zinc) surface coating, while GR8.8 indicates a performance grade of 8.8. This versatile fastener material offers good rust resistance, a moderately decorative appearance, and moderate strength.
Threaded Rod YZP GR8.8 Key Features
Yellow Zinc Plated (YZP) Coating: Uses yellow chromate passivation, providing moderate corrosion
protection (superior to ordinary white zinc), with a golden yellow surface that is aesthetically pleasing
and wear-resistant, suitable for indoor or mildly humid environments.
Strength Grade 8.8: Made of medium carbon steel with heat treatment, minimum tensile strength of
800 MPa, yield strength of 640 MPa, high strength and fatigue resistance.
Full Thread Design: The entire rod is uniformly threaded with no head, allowing for easy cutting and nut
fitting, providing flexible length adjustment.
Diverse Specifications: Diameters M6-M36, lengths 1m-6m (customizable), conforming to standards such
as DIN 975 and ISO 898-1.
Advantages: High strength, aesthetically pleasing, economical and practical, flexible installation, but not
suitable for extremely corrosive or high-temperature environments.
Working Principle
Cutting and Fitting: Cut to the required length and fit with nuts, washers, or connectors at both ends.
Preload Generation: When the nut is tightened, the threads generate a strong axial clamping force to
secure the components.
Load Transmission: The full thread evenly distributes tensile or shear forces; the yellow zinc plating
reduces friction and provides moderate corrosion protection.
Flexible Adjustment: Can be extended or used to fix multiple components with connecting nuts; the
principle involves frictional interlocking and elastic deformation.
Product Applications
Construction and Structures: Ceiling suspension rods, railing fixation, or pipe supports, providing
high-strength adjustment.
Mechanical Equipment: Assembling frames, heavy-duty brackets, or equipment components, balancing
strength and cost.
Home and Commercial: Installing shelves, lighting fixtures, or furniture connections, aesthetically
pleasing for visible applications.
Piping and HVAC: Suspending pipes or ducts, with flexible length.
General Fastening: Any project requiring 8.8 grade strength threaded rods.
