DIN 2510-ZU Stud Bolt

DIN 2510-ZU Stud Bolt

Shape ZU

Standards:

Materials:

1.7218 / 25CrMo4+QT (KG)
1.7709 / 21CrMoV5-7+QT (GA)
1.7225 / 42CrMo4+QT (GC)
1.4913 / X19CrMoNbVN11-1+QT (VW)
1.4923 / X22CrMoV12-1+QT (V,VH)
1.4980 / X6NiCrTiMoVB25-15-2+QT (SD)
1.4986 / X7CrNiMoBNb16-16+QT (S)
1.7711 / 40CrMoV4-6+QT (GB)
1.6580 / 30CrNiMo8+QT
SA193-B7 / SA320-L7, B16
all materials

Stud Bolts with Reduced Shank. Shape ZU with long thread and spacer stud. (only for pairing with capped nuts at both ends) up to M56 DIN 2510 Schraubenbolzen, Dehnschrauben DIN 2510 DIN 2510 Schraubenbolzen mit Dehnschaft

Table of Sizes

D1D2D3Z2BSWD7Z4
M8WTE design      
M10WTE design      
M128.35 - 8.507.78 - 8.003.76 - 4.2413.00 - 13.7077.78 - 8.006.71 - 7.29
M1611.82 - 12.0011.73 - 12.004.76 - 5.2416.00 - 16.701011.73 - 12.007.71 - 8.29
M2014.82 - 15.0013.73 - 14.005.76 - 6.2420.00 - 20.841112.73 - 13.008.71 - 9.29
M2417.82 - 18.0013.73 - 14.005.76 - 6.2424.00 - 24.841115.73 - 16.007.71 - 8.29
M2720.29 - 20.5017.73 - 18.005.76 - 6.2427.00 - 27.841317.73 - 18.009.71 - 10.29
M3022.79 - 23.0017.73 - 18.005.76 - 6.2430.00 - 30.841320.67 - 21.0011.65 - 12.35
M3325.29 - 25.5024.67 - 25.008.71 - 9.2933.0 - 34.02223.67 - 24.0013.65 - 14.35
M3627.29 - 27.5024.67 - 25.008.71 - 9.2936.0 - 37.02225.67 - 26.0013.65 - 14.35
M3930.25 - 30.5027.67 - 28.009.71 - 10.2939.0 - 40.02429.67 - 30.0013.65 - 14.35
M4232.25 - 32.5027.67 - 28.009.71 - 10.2942.0 - 43.02431.61 - 32.0014.65 - 15.35
M4535.25 - 35.5031.61 - 32.0010.65 - 11.3545.0 - 46.02733.61 - 34.0014.65 - 15.35
M4837.25 - 37.5031.61 - 32.0010.65 - 11.3548.0 - 49.02736.61 - 37.0018.58 - 19.42
M5240.75 - 41.0035.61 - 36.0011.65 - 12.3552.0 - 53.23039.61 - 40.0017.65 - 18.35
M5643.75 - 44.0039.61 - 40.0012.65 - 13.3556.0 - 57.23244.61 - 45.0018.58 - 19.42
M6450.70 - 51.0041.61 - 42.0013.65 - 14.3564.0 - 65.23651.54 - 52.0019.58 - 20.42
M7258.20 - 58.5049.61 - 50.0014.65 - 15.3572.0 - 73.24155.54 - 56.0019.58 - 20.42
M8065.70 - 66.0049.61 - 50.0014.65 - 15.3580.0 - 81.24162.54 - 63.0018.58 - 19.42
M9074.70 - 75.0049.61 - 50.0014.65 - 15.3590.0 - 91.44173.54 - 74.0019.58 - 20.42
M10083.65 - 84.0049.61 - 50.0014.65 - 15.35100.0 - 101.44185.46 - 86.0018.58 - 19.42

More info about DIN 2510-ZU Stud Bolt - Shape ZU

About DIN 2510-ZU Stud Bolts

✓ European Manufacturer

  • DIN 2510 Part 2
  • Reduced Shank Design
  • Long Threads with Spacer Point
  • For Use with Capped Nuts
  • Standard & Custom Dimensions
  • EN 10204 3.1 / 3.2
  • PED 2014/68/EU
  • AD 2000
  • Worldwide Shipping
  • Technical Support

DIN 2510-ZU Stud Bolts

European Manufacturer of DIN 2510-ZU Stud Bolts for Critical Flange Connections

Looking for DIN 2510-ZU stud bolts for pressure equipment, piping systems or demanding flange connections?

PowerBolt is a European manufacturer of DIN 2510-ZU stud bolts manufactured in the Czech Republic according to DIN 2510 Part 2. We produce both standard and custom stud bolts from certified European materials for customers operating in the Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Nuclear and Heavy Engineering industries.

DIN 2510-ZU stud bolts feature a reduced shank with long threaded ends and a spacer point. The reduced shank improves the elasticity of the fastener and promotes more uniform preload distribution, while the spacer point is specifically designed for applications using capped nuts on both ends. This design contributes to reliable sealing performance and long-term joint integrity in demanding pressure equipment.

Every stud bolt is manufactured using modern CNC machining technology and controlled production processes to ensure excellent dimensional accuracy, complete material traceability and consistent product quality.


Why Choose DIN 2510-ZU?

DIN 2510-ZU stud bolts are designed for bolted flange connections operating under high mechanical loads, elevated temperatures and demanding service conditions.

The reduced shank increases the elasticity of the fastener, reducing stress concentrations within the threaded connection and improving preload distribution. The spacer point supports correct positioning during assembly and makes the design particularly suitable for applications requiring capped nuts.


Key Benefits

  • Reduced shank for improved elasticity
  • Long threaded ends
  • Spacer point for accurate positioning
  • Designed for use with capped nuts
  • Optimised preload distribution
  • Reduced thread stress concentration
  • Excellent dimensional accuracy
  • High mechanical strength
  • Long service life
  • Standard and custom dimensions
  • Metric and imperial threads
  • Manufactured from certified European materials
  • Suitable for safety-critical applications

Typical Applications

DIN 2510-ZU stud bolts are commonly used in:

  • Pressure Vessels
  • Heat Exchangers
  • High-Pressure Flanges
  • Steam Systems
  • High-Pressure Piping
  • Valves
  • Pumps
  • Boilers
  • Turbines
  • Reactors
  • Petrochemical Equipment
  • Offshore Installations
  • LNG Facilities
  • Nuclear Power Plants

Industries Served

PowerBolt supplies DIN 2510-ZU stud bolts to customers operating in:

  • Nuclear Power
  • Conventional Power Generation
  • Oil & Gas
  • Petrochemical Industry
  • Chemical Processing
  • Offshore
  • Hydrogen
  • Heavy Engineering
  • EPC Contractors

Available Materials

We manufacture DIN 2510-ZU stud bolts from a comprehensive range of engineering materials selected according to operating temperature, mechanical strength, corrosion resistance and project specifications.

Alloy Steels

  • 25CrMo4 (1.7218)
  • 42CrMo4 (1.7225)
  • 21CrMoV5-7 (1.7709)
  • 40CrMoV4-6 (1.7711)
  • 30CrNiMo8 (1.6580)

Heat Resistant Steels

  • 1.4913
  • 1.4923
  • Durehete® 1055 (1.7729)
  • A286 (1.4980)
  • 1.4986

Stainless Steels

  • AISI 304
  • AISI 316
  • AISI 321
  • AISI 347
  • Duplex Stainless Steel
  • Super Duplex Stainless Steel

ASTM Materials

  • ASTM A193 Grade B7
  • ASTM A193 Grade B16
  • ASTM A193 Grade B8 Class 2
  • ASTM A193 Grade B8M Class 2
  • ASTM A320 Grade L7
  • ASTM A320 Grade L7M

Nickel Alloys

  • Alloy 718
  • Alloy 625
  • Alloy 925
  • Alloy 80A
  • Hastelloy®
  • Monel®
  • Incoloy®

Additional materials are available upon request.


Manufacturing Capabilities

PowerBolt manufactures DIN 2510-ZU stud bolts using advanced CNC machining technology and controlled production processes developed for safety-critical fastening applications.

Our manufacturing capabilities include:

  • CNC Turning
  • CNC Milling
  • Precision Machining
  • Thread Rolling
  • Thread Cutting
  • Grinding
  • Heat Treatment
  • Surface Finishing
  • Thread Inspection
  • Dimensional Inspection
  • Custom Manufacturing According to Customer Drawings
  • Small and Large Production Batches

Inspection & Certification

Products can be supplied with:

  • EN 10204 3.1 Inspection Certificate
  • EN 10204 3.2 Inspection Certificate
  • Positive Material Identification (PMI)
  • Mechanical Testing
  • Hardness Testing
  • Ultrasonic Testing (UT)
  • Magnetic Particle Inspection (MPI)
  • Dye Penetrant Testing (PT)
  • Dimensional Inspection
  • Third-Party Inspection (TÜV, DNV, Bureau Veritas, Lloyd’s Register)
  • PED 2014/68/EU Documentation
  • AD 2000 Documentation
  • Customer-Specific Inspection Requirements

Why Buy from PowerBolt?

PowerBolt specialises in manufacturing special fasteners for demanding industrial applications where quality, traceability and reliability are essential.

Our advantages include:

  • European manufacturer of special stud bolts
  • Manufacturing in the Czech Republic
  • Certified European raw materials
  • Standard and custom production
  • Extensive experience with alloy steels, stainless steels and nickel alloys
  • Complete material traceability
  • Comprehensive inspection and certification
  • Engineering support
  • Worldwide delivery

Whether you require a single prototype or a large production batch, our engineering team will help you select the optimum material, dimensions and certification for your project.


Frequently Asked Questions

What is a DIN 2510-ZU stud bolt?

DIN 2510-ZU is a reduced shank stud bolt with long threaded ends and a spacer point, manufactured according to DIN 2510 Part 2. It is specifically designed for use with capped nuts on both ends.

What is the purpose of the spacer point?

The spacer point assists with correct positioning during assembly and supports reliable installation when capped nuts are used.

Why does DIN 2510-ZU use a reduced shank?

The reduced shank increases the elasticity of the fastener, helping to distribute preload more evenly and reducing stress concentrations in the threaded connection.

Can PowerBolt manufacture custom DIN 2510-ZU stud bolts?

Yes. We manufacture both standard DIN 2510-ZU stud bolts and fully customised products according to customer drawings and project specifications.

Which materials are available?

PowerBolt manufactures DIN 2510-ZU stud bolts from alloy steels, heat-resistant steels, stainless steels, ASTM grades and nickel alloys.

Are EN 10204 inspection certificates available?

Yes. Products can be supplied with EN 10204 3.1 or EN 10204 3.2 inspection certificates together with additional inspection documentation and third-party inspection upon request.