Precision Punch Dies for Screw, Bolt & Nut Production

DongLong manufactures precision punch dies for screws, bolts, nuts and other fasteners. Our products are designed for cold heading and other fastener forming applications, helping manufacturers achieve accurate head shapes, drive recesses and customized profiles.

With a focus on precision machining, material selection and customized manufacturing, we provide punch solutions for different product designs, machine requirements and production conditions.

Our Product Range Includes:

• Carbide Punches

• Screw Heading Punches

• Cold Heading Punches

• Bolt Heading Punches

• Forming Punches

• Special-Shaped Punches

• Custom Carbide Punches

• ...........

We manufacture standard and non-standard punches according to customer drawings, samples and technical specifications.

How Do Punch Dies Work in Fastener Manufacturing?

Punch dies work together with forming dies to shape metal workpieces under pressure. During the forming process, the punch applies force to the material while the die supports and controls its shape.

In fastener manufacturing, punches are commonly used to form screw and bolt heads, create drive recesses and produce other customized features. They are designed to withstand repeated pressure and impact during production.

Depending on the application, punch dies can be manufactured from Tungsten Carbide or selected tool steels to meet different requirements for hardness, wear resistance and service life.

Key Features of Punch Dies

• Precise forming geometry

• High hardness and wear resistance

• Good resistance to repeated impact

• Stable dimensional accuracy

• Suitable for high-volume production

• Customized profiles and dimensions

• Available for different metal forming applications

Cold Heading Punches for Fastener Manufacturing

Cold Heading Punches are important tooling components in the production of screws, bolts, rivets, and other fasteners. During cold heading, metal wire or billets are formed at room temperature under high pressure.

The punch transfers forming force to the workpiece and helps create the required head shape or other features. Accurate punch geometry is important for maintaining consistent dimensions throughout production.

Applications of Cold Heading Punches

Cold heading punches can be used for:

• Screw manufacturing

• Bolt manufacturing

• Rivet production

• Fastener forming

• Heading operations

• Extrusion operations

• Precision metal forming

The punch design can be customized according to the fastener geometry and forming process.

Carbide Punch Dies

Carbide Punch Dies are manufactured using cemented carbide or other suitable carbide materials for applications requiring high wear resistance and compressive strength.

Carbide tooling is suitable for demanding forming operations where the punch is exposed to repeated pressure, friction, and impact. The appropriate carbide grade can be selected according to the workpiece material, forming conditions, and production requirements.

Tungsten Carbide Punches

Tungsten Carbide Punches provide a hard and wear-resistant working surface for precision metal forming. They can be used in applications where maintaining the punch profile and dimensional accuracy during repeated production is important.

Tungsten carbide tooling is commonly considered for high-volume fastener production and other demanding forming applications.

Punch Dies for Fastener Production

Fastener Dies and punch tooling work together to form metal materials into the required fastener geometry. During the manufacturing process, the punch and die must be properly matched to achieve stable forming results.

Punch Dies can be designed for different fastener shapes and forming stages, including:

• Screw head forming

• Bolt head forming

• Rivet forming

• Upsetting

• Forward extrusion

• Backward extrusion

• Precision forming

The specific punch geometry depends on the product design, material, forming equipment, and production process.

Customized Punch Dies

Different forming applications require different punch profiles, dimensions, materials, and tolerances. Customized Punch Dies can therefore be manufactured according to technical drawings, samples, or specific production requirements.

Punch Dies for Different Fastener Applications

Our precision punches are designed for various fastener manufacturing applications.

• Screw Manufacturing: Machine screws, self-tapping screws and customized screws.

• Bolt Manufacturing: Hex bolts, flange bolts and special bolts.

• Nut Manufacturing: Tooling for different nut forming requirements.

• Special Fasteners: Customized fasteners with unique head shapes and profiles.

• Industrial Fasteners: Fasteners used in automotive, construction, machinery and other industries.

Each punch can be customized according to the fastener design, forming process and production requirements.

How to Choose Punch Dies?

Selecting suitable Punch Dies requires consideration of the workpiece material, product geometry, forming process, machine type, forming pressure, production volume, and required tolerances.

For Cold Heading Punches, the punch material and geometry should be matched to the fastener design and forming conditions. For high-volume production, wear resistance and dimensional stability are particularly important factors.

A customized punch design can help ensure compatibility with the forming machine and the corresponding die.

Punch Dies Manufacturer

Precision Punch Dies require accurate machining, suitable tooling materials, and careful control of the forming profile and dimensions. Customized punch tooling can be manufactured according to drawings, samples, machine specifications, and application requirements.

Whether you need Cold Heading Punches, Carbide Punch Dies, Tungsten Carbide Punches, or Fastener Dies, customized tooling can be developed for different metal forming and fastener manufacturing applications. For customized Punch Dies, provide your product drawings, samples, dimensions, or technical requirements for further evaluation.

Precision Punch Die Manufacturing

DongLong combines precision machining processes and quality inspection to manufacture punch dies with different dimensions, geometries and technical requirements.

Our manufacturing processes include:

• CNC Machining

• Precision Grinding

• Wire EDM

• Electrical Discharge Machining (EDM)

• CNC Turning

• CNC Milling

From material preparation to final inspection, each manufacturing stage is controlled to meet the required product specifications.

Why Choose DongLong as Your Punch Die Manufacturer?

Established in 1998
Over 28 years of experience in precision screw mold and fastener tooling manufacturing.

In-House Manufacturing
A 20,000+ m² industrial park supporting precision tooling production.

Experienced Manufacturing Team
More than 200 employees supporting manufacturing, engineering and quality control.

ISO 9001 Quality Management
Quality management processes to support consistent manufacturing standards.

Customized Tooling Solutions
Manufacturing based on customer drawings, samples and product specifications.

Precision Machining Capability
Mold manufacturing tolerance down to 0.002 mm, subject to product specifications.

What are Punch Dies? 

A punch die is a tool used for stamping, cutting, punching, and forming metal materials by mechanical or hydraulic pressure, and is widely used in manufacturing.

What are the main components of a Punch Dies? 

A die usually consists of an upper die (Punch) and a lower die (Die). The upper die is used to apply pressure to cut or form the material, while the lower die provides support for the material and forms the desired shape or cut.

How does a punch work?

A die is punched, cut or formed by applying pressure from a punch press, which causes the upper die and lower die to move relative to each other, processing the material placed in the die.

What are the common types of dies?

There are various types of dies, including simple dies, composite dies, continuous dies, and multi-station dies, which are used for stamping tasks of varying complexity.

What are the common materials used for dies?

Dies are usually made of high hardness, high strength tool steel or tungsten carbide (tungsten carbide) to ensure wear resistance and long life for high frequency stamping operations.

How to maintain and care for punching dies?

Punching dies should be cleaned, lubricated and inspected regularly to avoid wear and corrosion. The edge of the die should also be regularly trimmed to ensure accurate cutting results.

What is the typical life of a die?

The lifespan of a die depends on the material it is made of, how often it is used and how well it is maintained. Typically, high-quality dies can withstand tens of thousands to millions of stamping operations.

What materials are dies used for?

Dies are suitable for processing a wide range of materials, including sheet metal (e.g., stainless steel, aluminum, copper), plastics, rubber, and composites.

How do dies affect machining accuracy?

The design and manufacturing accuracy of a die has a direct impact on the dimensional accuracy and surface quality of the machined part. A high precision die ensures consistent parts and reduces scrap.

In which industries are stamping dies widely used?

Punching dies are widely used in automotive manufacturing, electronic component production, appliance manufacturing, aerospace, and metal fabrication industries, where they are responsible for cutting, punching, and forming parts.