H=d Nuts
Product:H=D NUTS
Raw material: Q195,SWRCH35K/45K,40CR,42CRMO,etc.
Surface: Plain,H.D.G,etc.
Specification Range: M16,M20,5/8”,3/4”
Property Class:6,8,10,12/GR.2,GR.5,GR.8
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Product Introduction
Product: H=D Heavy Hex Nuts
Standard: UNI5587
Material: Q195,ZT195,08AL,SWRCH35K/45K,40CR,42CRMO,etc.
Surface: Plain,zinc plated,black oxide,H.D.G,etc.
Specification Range: M3-M27
Property Class:6,8,10
Core Function and Application
The heavy series hexagonal thick nuts specified by the UNI 5587 (H=D) standard have a function as key fasteners in mechanical connections. By using them in conjunction with bolts, screws, etc., they can achieve a detachable and firm connection between two or more components and at the same time, rely on their heavy structure design to bear higher loads, ensuring the stability and reliability of the connection parts. The specific functions can be divided into the following points:
Tightening and locking:
Through the precise meshing of the internal thread with the external thread of the bolt, an axial preload is generated, which firmly fixes parts to be connected, preventing relative displacement of the parts under conditions such as vibration and impact;
Load proof:
With its thick structure size (thicker than ordinary hex nuts), the nut's bearing capacity and shear resistance are enhanced, effectively dispersing pressure at the connection point to avoid deformation or failure of the nut due to excessive load;
Standardized compatibility:
Adherence to unified dimensional specifications (such as thread diameter, pitch, width across flats, thickness, etc.) ensures interchangeability with of the same specification and matching components, providing standardized basis for production, procurement, and maintenance, and reducing supply chain collaboration costs.
Main industry application scenarios
UNI 5587 (H=D) Heavy Series Hexagon Thick Nut, due to its high strength and high load-bearing characteristics, is suitable for work with high requirements for connection reliability and durability, and is widely used in multiple industrial fields, with core application scenarios including: Mechanical manufacturing industry; Construction and infrastructure engineering; Automobile and transportation equipment; Energy and power industry; Petrochemical industry.
Core features
Based on the technical specification of UNI 5587 (H=D) standard, the corresponding heavy series hex thick nuts have the following core features:
Heavy structure with strong load-bearing capacity:
Compared with ordinary hexagon nuts, the thickness of the standard-defined nuts is larger (for example, standard value of the thickness of M16 nuts is 16.00mm, with a tolerance range of 15.57-16.00mm, which effectively improves the shear strength and load-bearing capacity, and can be adapted to heavy-duty working conditions;
Stable performance, strict adaptation to harsh conditions:
The standard implies requirements for the material and mechanical properties of the nut (such as common adaptation to 34-70 stainless steel and other materials), with good wear resistance, anti-vibration performance, and can adapt to harsh application environments such as high temperature, high, and frequent vibration;
Universal and professional:
covering a variety of commonly used specifications such as M12-M27, it can meet the basic fastening needs of different. At the same time, it is precisely adapted to professional scenarios with heavy load and high reliability requirements, achieving a balance between universality and professionalism.
Established in 2005, our company has evolved over two decades of continuous development into a leading regional enterprise in the fastener industry with fully automated end-to-end production. With an annual output value exceeding RMB 130 million, our product range covers diverse market segments from mid-range to high-end and is distributed worldwide
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