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HANDAN HAOSHENG FASTENER CO., LTD.
Fastener Product
High-strength fasteners engineered for durability, precision, and reliable performance in every industrial and construction application.
Bolts
Fastener Nut
Screws
Fastener Anchor
Washers
Thread Rods & Studs
Others Fasteners

Our Square Head Bolts (also known as square neck bolts or coach bolts) feature a distinctive four-sided square head and a square shoulder beneath the head. This classic design provides a positive locking action when the square shoulder engages with the mating material, preventing rotation during installation. Ideal for wood-to-metal fastening, machinery assembly, and traditional industrial applications.

Our DIN 7991 Hexagon Socket Countersunk Head Screws (also known as flat head socket cap screws) are precision-engineered fasteners designed to sit completely flush with or below the workpiece surface. Featuring a flat 90° countersunk head and an internal hexagon socket drive, these screws provide a smooth, snag-free finish while delivering high clamping force through efficient torque transmission .

Manufactured in strict compliance with DIN 7991 (equivalent to ISO 10642) standards, these screws are ideal for applications requiring aesthetic appearance, space clearance, or safety from protruding heads

Our DIN 933 Grade 6.8 Hex Bolts are medium-strength, fully threaded hexagon head bolts designed for general-purpose fastening applications. Manufactured in strict compliance with DIN 933 standards, these bolts offer a reliable balance of strength, ductility, and cost-effectiveness—making them the ideal choice for light to medium-duty assemblies in construction, machinery, and industrial maintenance.

Our PTFE (Polytetrafluoroethylene)-coated hex bolts, commonly known as Teflon-coated bolts, are engineered for the most demanding industrial environments. This premium fastener combines the high tensile strength of a graded steel core with a uniform, inert PTFE coating, creating an exceptional barrier against corrosion, chemical attack, and material adhesion. Ideal for chemical processing, food & beverage, marine, and pharmaceutical applications, these bolts ensure long-term reliability, ease of maintenance, and prevention of product contamination.

Hexagon flange head screws conforming to DIN 6921 and ISO 1665 standards, featuring either smooth or serrated bearing surfaces, represent highly adaptable and dependable fastening solutions. Engineered for optimal clamping performance and uniform pressure distribution, these fasteners significantly reduce the potential for surface damage to assembled materials.

Our UNI 5587 Thick Hex Nuts, often referred to as "Heavy Hex Nuts" or "Extra Thick Nuts," are engineered to deliver exceptional load-bearing capacity and secure performance in the most demanding applications. Manufactured to the exacting dimensional and mechanical specifications of the UNI 5587 Italian national standard, these nuts feature a significantly greater height and width across flats than standard hex nuts. This robust design provides a larger bearing surface, deeper thread engagement, and superior resistance to vibration loosening, making them the ideal choice for structural, heavy machinery, and critical assembly environments where safety and reliability are paramount.

Our ISO 4035 Hexagon Thin Nuts are precision-engineered, low-height fasteners designed for applications where space is at a premium and a standard nut profile is unsuitable. As part of the globally recognized ISO metric fastener system, these nuts offer dimensional interchangeability and reliable performance worldwide. With a height significantly less than a standard hex nut, they provide an ideal solution for use as lock nuts (jam nuts), thread protectors, spacers, or in assemblies with strict axial clearance constraints. Manufactured to exact ISO 4035 specifications, they ensure consistent quality, fit, and function in any metric-based design.

Our ISO 4032 Hexagon Nuts represent the definitive international standard for general-purpose metric fastening. As the most widely recognized and specified hex nut worldwide, they are engineered to deliver reliable, high-strength performance across an unparalleled range of industrial, commercial, and consumer applications. Manufactured in strict compliance with ISO 4032 dimensional standards and ISO 898-2 mechanical property standards, these nuts guarantee consistent quality, perfect thread fit, and assured compatibility with ISO-metric bolts and threaded components. They are the fundamental, trusted choice for designers, engineers, and manufacturers who require uncompromising quality in their assemblies.

Our DIN 6334 Hex Coupling Nuts are precision-engineered, high-strength fasteners designed to securely join two externally threaded rods or bolts end-to-end. Characterized by their extended length and full, uninterrupted internal threading, these coupling nuts provide a robust and reliable connection point for a wide range of mechanical assembly, construction, and repair applications. Manufactured in strict compliance with DIN 6334 standards, they guarantee consistent dimensions, thread accuracy, and mechanical performance for dependable results in professional and industrial settings.

Our DIN 935 Hex Castle Nuts (also known as Hex Slotted Nuts) are precision-engineered, single-piece fasteners designed for secure, vibration-resistant connections where reliable mechanical locking is essential. Featuring a standard hexagonal body with a cylindrical upper section containing precisely machined slots, these nuts are engineered to work in conjunction with cotter pins or wire to create a permanent, fail-safe lock. Manufactured in strict compliance with DIN 935 standards, they offer consistent quality and reliability for mechanical, automotive, and industrial applications where safety is paramount.

Our DIN 934 Hexagon Nuts are the cornerstone of mechanical assembly across European engineering and industrial sectors. As the most recognized and specified standard for metric hex nuts in Europe, this product offers robust, dependable performance for a vast array of applications. Manufactured in strict accordance with the German DIN 934 standard, these nuts guarantee precise dimensional accuracy, consistent mechanical properties, and perfect compatibility with a wide range of metric bolts and threaded rods. They are the default choice for engineers, manufacturers, and maintenance professionals who prioritize proven reliability and interchangeability.

Our DIN 439 Hex Thin Nuts (also known as Hex Slotted Nuts or Low-Height Nuts) are engineered for applications where space is constrained and a standard nut profile is unsuitable. Manufactured to the exacting specifications of the German DIN 439 standard, these nuts provide a reliable and secure fastening point with a significantly reduced height. Their precise, low-profile design makes them the ideal choice for locking mechanisms, thread protection, and assemblies with limited clearance, without compromising on the strength and wrenchability inherent in the hexagonal form.

Our Chipboard Screws are precision-engineered for medium-density fiberboard (MDF), particle board, plywood, and solid wood. Featuring a twin-thread design and sharp point, these screws provide fast driving, superior holding power, and reduced material splitting—ideal for furniture assembly, cabinetry, and joinery.

Our Nylon Head Self-Drilling Screws combine a self-drilling tip with an integrated nylon washer, providing all-in-one drilling, tapping, and waterproof sealing. Ideal for metal roofing, wall cladding, and steel structure applications.

Our Drywall Screws are precision-engineered fasteners specifically designed for attaching gypsum plasterboard (drywall) to wood studs or light-gauge steel framing. Featuring a sharp self-drilling point, bugle head, and deep threads, these screws drive quickly, seat flush without tearing the paper face, and provide exceptional holding power for a smooth, professional finish.

Our German-Style Self-Tapping Window and Door Screws are engineered for the professional installation of window frames, door frames, and sill plates into various substrates including concrete, solid masonry, brick, and steel. Designed following German engineering standards (DIN), these screws eliminate the need for separate wall plugs or anchors—they cut their own thread directly into the pre-drilled pilot hole, providing immediate load-bearing capacity

Our Color Zinc Coated Coarse Thread Drywall Screws are engineered specifically for the efficient and reliable installation of gypsum wallboard (drywall) to wood or light-gauge steel studs. Featuring a sharp self-drilling point, aggressive coarse threads, and a durable color zinc coating, these screws are designed to drive quickly, seat flush without tearing the paper face, and hold firmly for a long-lasting finish. The distinctive color coating not only provides excellent corrosion resistance but also allows for easy visual identification during and after installation. This is the essential fastener trusted by professional drywall contractors and DIY enthusiasts for creating smooth, stable walls and ceilings.

Our Flange Sleeve Anchor (also known as flange nut sleeve anchor) is a high-performance expansion anchor designed for permanent fastening into concrete, solid brick, and masonry. Featuring an integrated hex flange nut, this anchor provides superior load distribution and a finished appearance in one complete assembly

Our Wedge Anchors represent the industry standard for high-strength, permanent fastening in solid concrete. Designed for critical structural and seismic applications, these anchors provide unparalleled shear and tensile strength by creating a powerful mechanical lock within the base material. Engineered for reliability and performance, they are the preferred choice for construction professionals, engineers, and contractors who demand absolute confidence in their fastening systems.

Our Dacromet Coated Flat Washers are high-performance fastening components designed for applications where standard zinc-plated washers fail. The advanced inorganic zinc-aluminum flake coating provides exceptional protection against rust, salt, chemicals, and high temperatures—making these washers the ideal choice for automotive, marine, construction, and outdoor industrial applications.

Our Dacromet Coated Flat Washers are high-performance fastening components designed for applications where standard zinc-plated washers fail. The advanced inorganic zinc-aluminum flake coating provides exceptional protection against rust, salt, chemicals, and high temperatures—making these washers the ideal choice for automotive, marine, construction, and outdoor industrial applications.

Our Color Zinc Coated DIN 125 Flat Washers are precision-engineered components designed to provide reliable load distribution, surface protection, and vibration absorption in bolted assemblies. Manufactured in strict accordance with the German DIN 125 standard, these washers feature a distinctive colored zinc finish that combines the dimensional accuracy and strength of a standard flat washer with enhanced corrosion resistance and visual appeal. The vibrant color coating not only protects against rust but also allows for easy identification, quality control, and aesthetic matching in visible applications. Ideal for general engineering, automotive, construction, and assembly applications where both performance and appearance matter.

Our DIN 976 Fully Threaded Stud Bolts (also known as threaded rods or all-thread studs) feature continuous threads along the entire length, providing maximum adjustability and versatility. Manufactured in strict compliance with DIN 976 standards, these rods allow nuts to be screwed on from either end or at any point along the rod, making them essential components for construction, engineering, and industrial applications

Our DIN 975 Threaded Rods (also known as Fully Threaded Studs, All-Thread Rods, or Threaded Bars) are precision-manufactured, continuous thread fasteners designed for maximum versatility in industrial, construction, and mechanical applications. As defined by the German DIN 975 standard, these rods feature uninterrupted threads along their entire length, providing infinite adjustability and the ability to be cut to any required size on-site . Manufactured from high-quality materials including carbon steel and stainless steel, our threaded rods serve as the essential connecting element in countless assemblies—from suspended ceiling systems and pipe hangers to heavy machinery anchoring and structural steel connections. The combination of standardized dimensions, material options, and full-thread design makes DIN 975 threaded rods the ultimate "cut-to-length" fastening solution for professionals worldwide.

Our Ceiling Integrated Nails (also known as Magic Nails or Integrated Ceiling Fasteners) represent a breakthrough innovation in suspended ceiling installation technology. These specialized fasteners combine the functions of a nail, expansion mechanism, and fixing component into a single, integrated unit—eliminating the need for separate screws, expansion pipes, or multiple installation steps . Designed for use with compatible powder-actuated or manual ceiling fastening tools, these nails enable contractors and installers to secure ceiling panels, furring strips, and suspension systems to concrete, steel, or wood substrates with a single press or hammer strike. The result is dramatically faster installation, superior holding strength, and a cleaner, more professional finish .

About us
Handan Haosheng Fastener Co, Ltd

Founded in 1996, is a large and professional manufacturer of high-strength fastener. Our factory located in Yongnian County,Handan City, Hebei Province, China,covers an area of 20000 square meters. Now we have advanced cold-forged machine,heat treatment machine and spheroidizing annealing equipment,most of which imported from Taiwan .Output is over 2000 tons every month.


Main product Standards:Germany Standard(DIN), the U.S. Standard (ANSI/ASME), British Standard(BS),China National Standard(GB), and other international standards. And the grade include 8.8 ,10.9 ,12.9.

Explore Our Company
1996
Founded in 1996
180
180 Employees
20
+
Technical Personnel
20000
Factory Area
ISO Certifications
Certified under ISO standards, ensuring consistent quality, reliable performance, and globally recognized manufacturing excellence.
wing bolt
black self tappers
black self tapping screws
plastic screw anchors
drill for drywall
dry wall screws
drywall anchor screws
ceiling anchor
sleeve anchor
black screws
galvanize screw
hexagon nut
black drywall screw
full thread bolt
hexagon head screw
bolt manufacturer
high tensile bolt
wing bolt
Fastener Production Process
Our fastener production process integrates advanced cold forging, heat treatment, and precision machining to ensure high strength, dimensional accuracy, and stable quality.
hex coupling nut coupling nut self locking nut double end bolt screws factory fastener manufacturers galvanized bolts hexagonal bolt stainless steel rivets
  • 01. Wire Drawing
  • 02. Spheroidizing Annealing
  • 03. Bolt Forging
  • 04. Bolt Threading
  • 05. Heat Treatment
  • 06. Surface Treatment
  • 07. Testing
  • 08. Package
  • 09. Loading
hex coupling nut coupling nut self locking nut double end bolt screws factory fastener manufacturers galvanized bolts hexagonal bolt stainless steel rivets
Exhibition
We actively participate in international exhibitions to showcase our high-strength fasteners, connect with global partners, and explore new market opportunities.
butterfly bolt
flange bolt
flat head bolt
galvanized bolts
galvanized screws
hex cap screws
hex head cap screw
hexagon screw
hook bolt
j bolt
sheetrock screws
wood and screws
self screwing screw
tapping screw
dry wall anchor
allen head screw
stainless steel threaded rod
stainless steel washers
bugle head screws
cone washers
conical washer
self tapping screws for plastic
flat washer
hexagon screws
See what our customers say
Our customers consistently trust our fasteners for their durability, precision, and reliable quality, resulting in long-term partnerships worldwide.
xing
Colorful Hex Head Self Drilling Screws Galvanized Ind
I ordered 7000 roofing screws and the experience has exceeded my expectations. very good quality with a better sealing area and self drilling tip than what l purchased here locally. Shipping time was as expected and thiscompany is very helpful. nice to deal with. l hope to do more business with this supplier in the future.
xing
Customized SS304 A4 Thread Rod Full Thread Stud
We have been sourcing SS304 A4 thread rods from this supplier for our coastal infrastructure projects, and the quality is outstanding. The full thread precision makes assembly seamless, and even after months of exposure to high-humidity environments, there is zero sign of oxidation. The customized lengths were cut exactly to our specifications, saving us significant time on-site.
News
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