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Machines Die & Punch

Strong Dies, No Break – Extreme durability for tough threads.

Precision Threads, Zero Defects – Consistent quality you can trust.

Roll Faster, Last Longer – Boost output, slash downtime.

    Contact us
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    Machines Die & Punch

    Strong Dies, No Break – Extreme durability for tough threads.

    Precision Threads, Zero Defects – Consistent quality you can trust.

    Roll Faster, Last Longer – Boost output, slash downtime.

    Get a Quick Qoute

    01

    Sinsun thread rolling dies manufacturers: Maximum Durability & Precision for Demanding Applications

    Leading manufacturer of ultra-durable thread rolling dies. Solve breakage & downtime. Get consistent threads & lower cost per part. Request your solution.

    Rolling Threads

    Rolling Threads

    In modern manufacturing, materials are strengthened by cold-forming, which keeps fibers bound together and makes them stronger.Sinsun knows how to roll threads, which is better than cutting because it produces threads that last longer and speeds up the process of making a lot of automotive and aerospace fasteners.
    Rolling Dies

    Rolling Dies

    Because they are the most important part of making threads, dies have to be able to handle a lot of pressure. Sinsun makes rolling dies out of special steel alloys that don't break easily. This means that the tools last up to 30% longer than the average in the industry, which lowers the cost of tooling for our clients by a thousand parts.
    Thread Rolling Dies

    Thread Rolling Dies

    Thread rolling dies need to be very exact in order to make a thread form and pitch that are always the same. Sinsun's CNC-ground dies meet DIN/ANSI standards for exact tolerances. This means that there are no thread galling or rejection rates in important parts like engine parts and structural bolts.
    Flat Thread Rolling Dies

    Flat Thread Rolling Dies

    Flat dies are very useful for making special threads on big or non-cylindrical parts. Sinsun designs and heat-treats flat thread rolling dies to make sure that wear is evenly distributed, which solves problems with alignment and premature wear when making leadscrews and custom fasteners.
    Second Punch

    Second Punch

    The second punch in progressive header operations sets the final shape of the head and the bearing surface. Sinsun's second punches are made to be very stable in size and resistant to friction, which keeps material from sticking to them and makes sure that parts are always of the same high quality when cold heading Grade 8.8 and higher fasteners at high speeds.
    Header Punch

    Header Punch 

    The header punch takes the first hit, so toughness is very important. Sinsun uses micro-grain carbide and advanced coating technologies to stop chipping and deformation, which greatly extends the life of the punch and cuts down on unplanned press downtime in demanding multi-station headers.
    01

    Why should you pick Sinsun's header and thread rolling dies? 

    Unmatched strength, lower cost

    The unique steel and heat treatment we use prevents cracking and wear, resulting in 30% longer tool life and lower parts costs.

    Accuracy for production with no defects

    CNC precision grinding makes sure that the threads and heads are perfect, which stops galling and lowers the number of parts that are rejected.

    Designed to Keep Running for as Long as Possible

    Optimized designs and coatings prevent materials from getting stuck and breaking, which cuts down on unplanned downtime and increases your output.

    The total cost advantage

    We focus on the total cost of ownership because longer life, less downtime, and consistent quality lead to a faster, higher return on investment.

    Sinsun Precision Thread Rolling Dies - Full Specifications & Dimensional Data

    Explore Sinsun's complete range of thread rolling die specifications (S, H, L1, L2). Find the exact die for your fastener size. Engineered for durability and precision. Download specs or request a quote.

    Screw Thread Rolling Die Specifications (Sinsun)

    The table below lists our standard thread rolling die dimensions, designed for optimal performance and interchangeability.

    Series

    Thickness (S) mm

    Height (H) mm

    Length (L1) mm

    Length (L2) mm

    Notes

    A

    19

    25

    51

    64

    For small fastener threads

    B

    25

    25, 38, 55

    75

    90

    Versatile mid-range series

    C

    25

    25, 40, 55, 65, 80

    100

    115

    High-capacity standard series

    D

    25

    25, 40, 55, 65, 80, 105

    127

    140

     

    E

    25

    25, 40, 55, 65, 80, 105

    150

    165

    For long-length threading

    F

    35

    55, 80, 105, 125, 150

    190

    215

    Heavy-duty large fastener series

    G

    38

    55, 80, 105, 125, 150

    230

    265

    Extra-heavy-duty series

    H

    15

    20

    45

    55

    Compact precision series

    I

    20

    25

    65

    80

     

    J

    20

    25

    60

    70

     

    K

    25

    25, 30, 40, 55

    90

    105

     

    L

    25

    25, 30, 40, 55, 65

    108

    127

     

    M

    25

    25, 40, 55

    110

    125

     

    N*

    20.8

    25, 40

    73.3

    86.2

    *With 5°angular face

    P*

    20.8

    25, 40, 53

    92.3

    105.2

    *With 5° angular face

    Q*

    23.8

    25, 40, 54

    112

    131.2

    *With 5° angular face
    Machines Die & Punch

    Key:

    S (Thickness): Die body width.

    H (Height): Critical working profile height.

    L1 / L2: Overall die lengths for mounting and stability.

    Application: Select based on target screw/bolt diameter, thread length, and rolling machine type.

    Customization: All standard sizes are available. Contact us for fully custom dimensions and profiles.

    Screw Header Punch Types (Sinsun Manufacturing)

    The following tables categorize our standard header punch capabilities by the screw head styles and drive types they are engineered to form.

    Screw Head Style Standard Abbreviation Description / Common Application
    Flat FLAT Countersunk for a flush surface finish.
    Oval OVAL Rounded, shallow countersunk head.
    Binding BINDING Typically used in electrical binding posts.
    Pan (JIS) PAN(JIS) Dish-shaped head with rounded edges (JIS standard).
    Pan (ANSI) PAN(ANSI) Dish-shaped head (ANSI/DIN standard).
    Round ROUND Domed top surface.
    Truss TRUSS Low-profile, wide-diameter head.
    Button BUTTON Low dome, smaller diameter than Round.
    Flat Countersunk PF. Flat top, countersunk.
    Pan with Washer PAN WASHER Integrated washer (non-removable) base.
    Cheese CHEESE Cylindrical head with flat top.
    Fillister FILLISTER Cylindrical head with rounded top.
     q Standard Abbreviation Description
    Phillips PHILLIPS Cross-recess, common general-purpose drive.
    Slotted (Standard) SLOTTED Single straight slot.
    Slotted (Full Width) SLOTTED (Full) Slot extends across the full head diameter.
    Phillips/Slotted Combo PHILLIPS / SLOT. Combination recess.
    Torx (Six-Lobe) SIX-LOBE Star-shaped recess for high torque transfer.
    Tamper-Resistant Torx SIX-LOBE TAMPER Torx with a central security pin.
    Torx/Slotted Combo SIX-LOBE / SLOT. Combination recess.
    Pozidriv POZIDRIV Cross-recess with additional ribs for reduced cam-out.
    Pozidriv/Round Hole POZIDRIV / ROUND HOLE Combination with a central round security hole.
    Square (Robertson) SQUARE Square recess.
    Square/Slotted Combo SQUARE / SLOT. Combination recess.
    Phillips/Square Combo PHILLIPS / SQUARE Combination recess (e.g., Quadrex).
    Triangle TRIANGLE Triangular recess for tamper resistance.
    Y-Type Y-TYPE Y-shaped recess.
    Tri-Wing TRI-WING Three-bladed recess for tamper resistance.
    S-Type S-TYPE "Snake-eye" two-hole recess.
    H-Type H-TYPE H-shaped recess.
    Hex Socket HEXAGON Internal hex drive (Allen).
    5-Point 5-POINT Pentagon recess for security.
    8-Point 8-POINT Double-square recess.
    Spline SPLINE Multi-toothed recess.
    Spanner (Two-Hole) SPANNER Two-round-hole security drive.
    Clutch CLUTCH Bow-tie shaped recess.
    Phillips/Indented Slot PHILLIPS / SLOT.IND. Combination with an indented slot.
    Indented Slot SLOT.IND. Slotted drive with an indented center.

    Note: Sinsun custom-designs and manufactures precision header punches to form these and other specialized head styles and drive recesses. Contact our engineering team with your specific requirements.

    Durable Dies & Punches Pro-GradeDescription

    Customizable to your specs, these precision tools boast high hardness and toughness. Perfect for shaping screws, nails, and staples—boost production efficiency and product uniformity.

    Proven Performance: Sinsun Tools Delivering Results from Poland to Vietnam

    Sinsun tools are made to work together to solve problems in specific industries, not just as separate items.Using reliable, task-specific tools that boost productivity and ensure the same results every time, we deal with the main operational problems of safety risks, inefficiency, and inconsistent quality.

    01 /

    The client and country for the screw header punch is Autopart Polska Sp. z o.o. in Poland.

    "We make a lot of bolts for car brake calipers, and Sinsun's Screw Header Punch has held up well to use." The punch has doubled the life of our tools and made them much more stable.
    02 /

    Screw Punch Client and Country: Precision Components Vietnam Co., Ltd., Vietnam 

    "Making tiny M1.0 screws for consumer electronics is a precision challenge." Sinsun's micro screw punch makes heads that are perfect and don't have any rough edges. We are extremely dependent on this to maintain our high yield rates in Hai Phong.
    03 /

    Punch Dies Client and Country: Brasfix Indústria e Comércio Ltda. in Brazil

    "Sinsun's punch dies are so strong that they have eliminated our cracking problem when we make high-carbon steel hex bolts." As a result, we have a lot less downtime on our press in So Paulo, allowing us to meet our deadlines more easily.
    04 /

    Screw Dies Client and Country: MegaFast Industries in India

    Tools are under a lot of stress when making anchor bolts for infrastructure projects,' someone said. Sinsun's screw dies are very strong and don't bend, so the parts are always of the same high quality.
    05/

    Client and Country: Taiwan Superior Tools Corp. in Taiwan, China

    Feedback: "Sinsun's thread rolling die makes the best surface finish and thread root strength for our high-quality socket head cap screws." This has made our final products last much longer and improved our brand's reputation for quality.
    Keep In Touch

    TO KNOW MORE ABOUT Sinsun, PLEASE CONTACT US！

    We are committed to providing you with the best quality service and look forward to communicating with you to solve problems together and bring you a better experience.

    our experts will solve them in no time.