ISO 7380-1 Hex Socket Button Head Screw Technical Datasheet
ISO 7380-1 Hex Socket Button Head Screws are metric threaded fasteners featuring a low-profile, domed button head with an internal hexagon (Allen) drive. Their smooth rounded head offers an attractive appearance while minimizing protrusion, making them ideal for machinery, electronics, automation equipment, sheet metal assemblies, furniture, and architectural applications.
Unlike socket head cap screws (ISO 4762), ISO 7380-1 screws have a reduced head height and therefore reduced loadability due to head design. They are intended where moderate tightening torque, improved aesthetics, and operator safety are more important than maximum preload. The current ISO 7380-1 standard applies to metric coarse threads from M3 to M16.
Table of Contents
ITEM CODE: 1032
Standards
| Standard | ISO 7380-1 |
| Product Type | Hex Socket Button Head Screw |
| Thread | Metric Coarse |
| Product Grade | Grade A |
| Thread Direction | Right Hand |
Dimensions
| d1 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 |
| dk max | 3.5 | 4.5 | 5.7 | 7.6 | 9.5 | 10.5 | 14 | 17.5 | 21 |
| k | 1.3 | 1.5 | 1.65 | 2.2 | 2.75 | 3.3 | 4.4 | 5.5 | 6.6 |
| s | 1.3 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 |
all dimensions in mm
Dimensions Tolerances:
General dimensional tolerances for standard metric fasteners—including thread diameter, overall length, head diameter, head height/thickness, across flats, and washer dimensions—are available in our Standard Dimensional Tolerances for Common Metric Fasteners guide.
Certain product-specific features, such as drive recess dimensions, socket depth, countersink geometry, under-head radii, and other special characteristics, are governed by the applicable DIN or ISO product standard and may not included in this datasheet.
Download Technical Datasheets
Stainless Steel
| Grade | Download |
|---|---|
| A2-70 (SS304) | ⬇️ Download Datasheet |
| A4-70 (SS316) | ⬇️ Download Datasheet |
Carbon Steel
| Property Class | Download |
|---|---|
| 10.9 | ⬇️ Download Datasheet |
| 8.8 | ⬇️ Download Datasheet |
Mechanical Properties
| Material / Property Class | Tensile Strength | Yield Strength | Standard |
|---|---|---|---|
| Steel 4.8 | ≥ 400 MPa | ≥ 320 MPa | ISO 898-1 |
| Steel 5.8 | ≥ 500 MPa | ≥ 400 MPa | ISO 898-1 |
| Steel 8.8 | ≥ 800 MPa | ≥ 640 MPa | ISO 898-1 |
| Stainless Steel A2-50 | ≥ 500 MPa | — | ISO 3506-1 |
| Stainless Steel A2-70 | ≥ 700 MPa | ≥ 450 MPa | ISO 3506-1 |
| Stainless Steel A4-70 | ≥ 700 MPa | ≥ 450 MPa | ISO 3506-1 |
| Titanium Grade 2 | Approx. 345 MPa | Approx. 275 MPa | ASTM B348 |
| Titanium Grade 5 | Approx. 895 MPa | Approx. 828 MPa | ASTM B348 |
Material Characteristics and Recommended Applications
| Material | Characteristics | Typical Applications |
|---|---|---|
| Stainless Steel A2-70 | Corrosion resistant, general purpose | Machinery, enclosures, food equipment |
| Stainless Steel A4-70 | Excellent marine corrosion resistance | Offshore, chemical plants |
| Alloy Steel 10.9 | High strength | Industrial machinery |
| Alloy Steel 8.8 | Medium strength | General engineering |
| Titanium Grade 2 | Lightweight, corrosion resistant | Chemical processing |
| Titanium Grade 5 | High strength-to-weight ratio | Aerospace, motorsport |
Technical Specifications
| Property | Specification |
|---|---|
| Standard | ISO 7380-1 |
| Drive Type | Hex Socket (Allen) |
| Head Style | Button Head |
| Thread Type | Metric Coarse |
| Thread Direction | Right Hand |
| Diameter Range | M3–M16 |
| Product Grade | Grade A |
| Strength | Reduced loadability due to head design |
| Typical Finish | Plain, Zinc Plated, Black Oxide, Passivated |
| Manufacturing | Cold Forged |
| Thread | Rolled |
| RoHS Compliant | Available |
| REACH Compliant | Available |
ISO 7380-1 Hex Socket Button Head Screw Weight Chart
Weight in kgs. per 1,000 pcs. All weights are approximations.
| Length | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 |
| 4 | 0.128 | 0.229 | 0.347 | ||||||
| 5 | 0.144 | 0.394 | 0.813 | 1.476 | |||||
| 6 | 0.432 | 0.885 | 1.606 | 2.193 | |||||
| 8 | 0.194 | 0.344 | 0.517 | 1.078 | 1.882 | 2.634 | 5.592 | ||
| 10 | 0.235 | 0.389 | 0.607 | 1.215 | 2.152 | 2.895 | 6.38 | 10.8 | |
| 12 | 0.2589 | 0.462 | 0.67 | 1.351 | 2.285 | 3.252 | 7.04 | 12.19 | |
| 16 | 0.854 | 1.631 | 2.823 | 3.967 | 7.999 | 13.56 | |||
| 20 | 1.048 | 1.992 | 3.272 | 4.535 | 9.243 | 15.74 | 24.37 | ||
| 25 | 1.243 | 2.258 | 3.959 | 5.605 | 10.64 | 18.37 | 28.31 | ||
| 30 | 1.449 | 2.97 | 4.42 | 6.406 | 12.36 | 20.55 | 31.17 | ||
| 35 | 1.627 | 3.387 | 5.07 | 7.156 | 13.83 | 23.08 | 35.12 | ||
| 40 | 1.853 | 3.486 | 5.667 | 7.979 | 15.59 | 25.81 | 38.41 | ||
| 45 | 3.792 | 6.238 | 8.898 | 16.754 | 28.17 | 42.26 | |||
| 50 | 4.144 | 6.753 | 9.748 | 18.46 | 30.649 | 46.14 | |||
| 55 | 7.405 | 10.54 | 20.09 | 33.12 | 49.65 | ||||
| 60 | 8.021 | 11.436 | 21.75 | 35.26 | 51.9 | ||||
| 65 | 12.23 | 23.85 | 37.9 | 56.47 | |||||
| 70 | 5.643 | 9.143 | 13.04 | 24.81 | 40.44 | 60.29 | |||
| 75 | 5.968 | 13.84 | 26.25 | 42.93 | 63.83 | ||||
| 80 | 10.3 | 14.75 | 27.61 | 45.54 | 66.82 | ||||
| 90 | 16.43 | 30.78 | 50.16 | 74.63 | |||||
| 100 | 18.26 | 34.23 | 55.24 | 81.87 | |||||
| 110 | 20.05 | 37.13 | 60.29 | 87.83 | |||||
| 120 | 21.75 | 39.89 | 65.03 |
Applications
- Industrial machinery
- Automation systems
- Electrical panels
- Electronics enclosures
- Sheet metal fabrication
- Robotics
- Furniture manufacturing
- Medical equipment
- Automotive interiors
- Consumer products
- Renewable energy equipment
- Architectural assemblies
Advantages
- Attractive rounded button head appearance
- Smooth low-profile design reduces snagging
- Internal hex drive allows secure tightening
- Requires less installation clearance than hex bolts
- Corrosion-resistant material options available
- Suitable for automated assembly
- Available in stainless steel, alloy steel, brass, and titanium
- Ideal where aesthetics are important
- Metric coarse threads simplify sourcing
- Manufactured to internationally recognized ISO standards
Frequently Asked Questions
What is ISO 7380-1?
ISO 7380-1 specifies metric hex socket button head screws with a rounded button head and internal hexagon drive. It defines dimensions and characteristics for screws with reduced loadability due to the head design.
What is the difference between ISO 7380-1 and ISO 4762?
ISO 4762 socket head cap screws have a taller cylindrical head and are designed for full load capacity. ISO 7380-1 screws have a lower domed button head that offers improved appearance and lower profile but reduced tensile loadability.
What is the difference between ISO 7380-1 and ISO 7380-2?
ISO 7380-1 has a standard button head, while ISO 7380-2 incorporates an integral collar (flange) beneath the head to provide a larger bearing surface.
Why are ISO 7380-1 screws marked differently?
Steel property classes are marked with a leading zero (for example, 010.9) to indicate the screw has reduced loadability because of the button head geometry.
Are ISO 7380-1 screws fully threaded?
Yes. Standard ISO 7380-1 screws are generally supplied with full metric coarse threads.
What materials are available?
Common materials include stainless steel A2-70, stainless steel A4-70, alloy steel, and titanium.
Are these suitable for outdoor use?
Yes. Stainless steel A2 and especially A4 provide excellent corrosion resistance for outdoor and marine environments.
Can ISO 7380-1 replace socket head cap screws?
Only where the required clamp load and tightening torque are within the reduced loadability limits of ISO 7380-1. For high-preload joints, ISO 4762 socket head cap screws are generally preferred.
Need Technical Assistance or a Quote?
Looking for pricing, samples, CAD drawings, or help selecting the right fastener? Our team can help you choose the correct product for your application.
📧 sales@horizonincindia.com | 📞 +91 80 4117 9152 | 💬 +91 99167 77262
Related Products
- ISO 7380-2 Hex Socket Button Head Screw with Collar
- ISO 4762 Socket Head Cap Screw
- DIN 7984 Low Head Socket Cap Screw
- ISO 14580 Hexalobular Low Head Screw
- ISO 14579 Hexalobular Pan Head Screw
- ISO 14583 Hexalobular Button Head Screw
- ISO 10642 Hex Socket Countersunk Screw
Technical Disclaimer
The technical information, specifications, dimensions, mechanical properties, drawings, and performance data provided on this website are intended for general reference and engineering guidance only. Values shown are representative of products manufactured under normal production conditions and may vary depending on material grade, manufacturing tolerances, installation method, application, and operating environment.
While Horizon Inc. makes every reasonable effort to ensure the accuracy of the information provided, we make no warranties, express or implied, regarding its completeness, accuracy, or suitability for any particular purpose. Customers are responsible for verifying that the selected product is appropriate for their specific application and operating conditions. Where safety, structural integrity, or regulatory compliance is critical, independent engineering evaluation and product testing should be performed.
Horizon Inc. reserves the right to modify product specifications, dimensions, materials, and technical data without prior notice.
To the fullest extent permitted by applicable law, Horizon Inc. shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from the use of, or reliance upon, the information contained on this website.
Copyright
© 2026 Horizon Inc. All Rights Reserved.
All content, product data, specifications, technical drawings, images, and documents published on this website are the property of Horizon Inc. and may not be reproduced, distributed, modified, or transmitted without prior written permission.
