BF is with center hole, BFO without center hole.
BF is with center hole, BFO without center hole.
| D1 | B | D2 | D3 | D5 | E | K | L1 | S |
|---|---|---|---|---|---|---|---|---|
| M8 | WTE design | |||||||
| M10 | WTE design | |||||||
| M12 | 17.65 - 18.35 | 20.67 - 21.00 | 14.23 - 14.50 | 3.82 - 4.00 | min 18.90 | 6.82 - 7.18 | 32.38 - 33.00 | 16.73 - 17.00 |
| M16 | 20.08 - 20.92 | 25.67 - 26.00 | 18.17 - 18.50 | 5.82 - 6.00 | min 21.10 | 9.82 - 10.18 | 39.38 - 40.00 | 18.67 - 19.00 |
| M20 | 23.58 - 24.42 | 30.61 - 31.00 | 22.17 - 22.50 | 5.82 - 6.00 | min 26.75 | 12.785 - 13.215 | 48.38 - 49.00 | 23.67 - 24.00 |
| M24 | 27.08 - 27.92 | 34.61 - 35.00 | 26.17 - 26.50 | 9.78 - 10.00 | min 30.14 | 13.785 - 14.215 | 55.26 - 56.00 | 26.67 - 27.00 |
| M27 | 30.00 - 31.00 | 39.61 - 40.00 | 30.11 - 30.50 | 9.78 - 10.00 | min 35.72 | 15.785 - 16.215 | 61.26 - 62.00 | 31.48 - 32.00 |
| M30 | 34.50 - 35.50 | 44.61 - 45.00 | 33.11 - 33.50 | 9.78 - 10.00 | min 39.98 | 16.785 - 17.215 | 67.26 - 68.00 | 35.48 - 36.00 |
| M33 | 37.50 - 38.50 | 48.61 - 49.00 | 36.11 - 36.50 | 9.78 - 10.00 | min 45.63 | 21.74 - 22.26 | 76.26 - 77.00 | 40.48 - 41.00 |
| M36 | 40.00 - 41.00 | 53.04 - 53.50 | 39.11 - 39.50 | 9.78 - 10.00 | min 45.63 | 21.74 - 22.26 | 81.13 - 82.00 | 40.48 - 41.00 |
| M39 | 42.50 - 43.50 | 58.04 - 58.50 | 42.11 - 42.50 | 9.78 - 10.00 | min 51.28 | 22.74 - 23.26 | 85.13 - 86.00 | 45.48 - 46.00 |
| M42 | 45.50 - 46.50 | 63.04 - 63.50 | 45.11 - 45.50 | 9.78 - 10.00 | min 55.80 | 22.74 - 23.26 | 91.13 - 92.00 | 49.48 - 50.00 |
| M45 | 48.00 - 49.00 | 68.04 - 68.50 | 49.11 - 49.50 | 9.78 - 10.00 | min 55.80 | 25.74 - 26.26 | 97.13 - 98.00 | 49.48 - 50.00 |
| M48 | 52.90 - 54.10 | 73.04 - 73.50 | 53.04 - 53.50 | 9.78 - 10.00 | min 61.31 | 25.74 - 26.26 | 102.13 - 103.00 | 54.26 - 55.00 |
| M52 | 56.40 - 57.60 | 78.04 - 78.50 | 57.04 - 57.50 | 9.78 - 10.00 | min 66.96 | 26.74 - 27.26 | 108.13 - 109.00 | 59.26 - 60.00 |
| M56 | 59.90 - 61.10 | 82.96 - 83.50 | 62.54 - 63.00 | 9.78 - 10.00 | min 72.61 | 26.74 - 27.26 | 114.13 - 115.00 | 64.26 - 65.00 |
| M64 | 68.90 - 70.10 | 92.96 - 93.50 | 70.54 - 71.00 | M48x1.5 | min 83.91 | 31.69 - 32.31 | 129.00 - 130.00 | 74.26 - 75.00 |
| M72 | 76.40 - 77.60 | 104.46 - 105.00 | 78.54 - 79.00 | M48x1.5 | min 89.56 | 31.69 - 32.31 | 139.00 - 140.00 | 79.26 - 80.00 |
| M80 | 83.30 - 84.70 | 114.46 - 115.00 | 86.46 - 87.00 | M48x1.5 | min 100.72 | 35.69 - 36.31 | 151.00 - 152.00 | 89.13 - 90.00 |
| M90 | 92.30 - 93.70 | 129.37 - 130.00 | 96.46 - 97.00 | M48x1.5 | min 117.67 | 40.69 - 41.31 | 167.00 - 168.00 | 104.13 - 105.00 |
| M100 | 101.30 - 102.70 | 145.37 - 146.00 | 106.46 - 107.00 | M48x1.5 | min 134.62 | 44.69 - 45.31 | 181.85 - 183.00 | 119.13 - 120.00 |
✓ European Manufacturer
Looking for DIN 2510 nuts with resilient sleeves (Dehnhülse) for pressure equipment, piping systems or demanding flange connections?
PowerBolt is a European manufacturer of DIN 2510 nut assemblies with resilient sleeves (Dehnhülse), manufactured in the Czech Republic according to DIN 2510 Part 7. We produce both standard and custom assemblies from certified European materials for customers operating in the Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Nuclear and Heavy Engineering industries.
DIN 2510 nut assemblies combine a heavy hex nut with a resilient sleeve (Dehnhülse) to provide accurate guidance of reduced shank stud bolts, improved alignment during assembly and reliable load distribution within critical bolted joints.
Two standard versions are available:
This allows the correct assembly to be selected according to the stud bolt design and application requirements.
Every nut assembly is manufactured using modern CNC machining technology and controlled production processes to ensure excellent dimensional accuracy, complete material traceability and consistent product quality.
DIN 2510 nut assemblies with resilient sleeves are designed for bolted flange connections operating under high mechanical loads, elevated temperatures and demanding service conditions.
The resilient sleeve (Dehnhülse) accurately guides the reduced shank stud bolt, improves positioning during assembly and promotes more uniform preload distribution throughout the bolted joint. The availability of both AF and AFO versions allows the assembly to be matched precisely to the application requirements.
DIN 2510 nut assemblies with resilient sleeves are commonly used in:
PowerBolt supplies DIN 2510 nut assemblies with resilient sleeves to customers operating in:
We manufacture DIN 2510 nuts with resilient sleeves from a comprehensive range of engineering materials selected according to operating temperature, mechanical strength, corrosion resistance and project specifications.
Additional materials are available upon request.
PowerBolt manufactures DIN 2510 nut assemblies with resilient sleeves using advanced CNC machining technology and controlled production processes developed for safety-critical fastening applications.
Our manufacturing capabilities include:
Products can be supplied with:
PowerBolt specialises in manufacturing special fastening components for demanding industrial applications where quality, traceability and reliability are essential.
Our advantages include:
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.
DIN 2510 nut assemblies combine a heavy hex nut with a resilient sleeve (Dehnhülse), manufactured according to DIN 2510 Part 7. They are designed for use with reduced shank stud bolts in demanding bolted flange connections.
AF assemblies are supplied with a centre hole in the resilient sleeve.
AFO assemblies are supplied without a centre hole. The letter “O” comes from the German word “ohne“, meaning “without”.
The resilient sleeve accurately guides the stud bolt, improves alignment during assembly and contributes to more uniform preload distribution throughout the bolted joint.
Yes. We manufacture both standard DIN 2510 nut assemblies and fully customised products according to customer drawings and project specifications.
PowerBolt manufactures DIN 2510 nut assemblies from alloy steels, heat-resistant steels, stainless steels, ASTM A194 grades and nickel alloys.
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.
