ISO 14583 Hexalobular (Torx®) Pan Head Machine Screw Datasheet
ISO 14583 Hexalobular (Torx®) Pan Head Machine Screw
ISO 14583 specifies hexalobular (internal Torx® drive) pan head machine screws with metric threads ranging from M2 to M10. These screws provide significantly improved torque transmission compared to conventional Phillips or Pozidriv drives, reducing cam-out and improving assembly efficiency in automated and manual fastening operations.
ISO 14583 screws are widely used in automotive, electronics, industrial machinery, telecommunications, electrical equipment, appliances, and precision engineering where repeatable tightening torque and long service life are required. The current ISO 14583:2011 edition remains the active standard after its latest systematic review.
Table of Contents
ITEM CODE: 1047
| Standard | Status |
|---|---|
| ISO 14583 | Primary Standard |
| EN ISO 14583 | Equivalent |
| DIN EN ISO 14583 | German Adoption |
| BS EN ISO 14583 | British Adoption |
Dimensions
| d1 | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 |
|---|---|---|---|---|---|---|---|---|
| d2 | 3.2 | 4 | 5 | 5.6 | 8 | 9.5 | 12 | 16 |
| k | 1.4 | 1.6 | 2.1 | 2.4 | 3.1 | 3.7 | 4.6 | 6 |
| t | 0.6 | 0.77 | 1.04 | 1.27 | 1.66 | 1.91 | 2.42 | 3.18 |
| A | 1.49 | 1.75 | 2.4 | 2.8 | 3.95 | 4.5 | 5.6 | 7.95 |
| Drive | T5 | T6 | T8 | T10 | T20 | T25 | T30 | T45 |
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 |
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 |
|---|---|---|
| Steel Class 4.8 | General-purpose fastening | Electrical assemblies, furniture |
| Steel Class 8.8 | Higher tensile strength | Industrial machinery |
| Stainless Steel A2 (304) | Excellent corrosion resistance | Food processing, HVAC, electrical panels |
| Stainless Steel A4 (316) | Superior corrosion resistance | Marine, offshore, chemical plants |
| Brass | Non-magnetic, decorative, conductive | Electrical equipment, instrumentation |
| Titanium Grade 2 | Lightweight, corrosion resistant | Aerospace, medical equipment |
| Titanium Grade 5 | High strength-to-weight ratio | Aerospace, motorsports, high-performance engineering |
Technical Specifications
| Property | Specification |
|---|---|
| Product Type | Hexalobular (Torx®) Pan Head Machine Screw |
| Standard | ISO 14583 |
| Thread Type | Metric Coarse |
| Thread Sizes | M1.6–M10 |
| Drive Type | Internal Hexalobular (Torx®) |
| Head Style | Pan Head |
| Product Grade | Grade A |
| Thread Direction | Right Hand |
| Manufacturing Method | Cold Forged |
| Thread Manufacturing | Rolled Thread |
| Drive Standard | ISO 10664 |
| Typical Property Class | 4.8, 8.8, 10.9, 12.9 (Steel) |
| Stainless Grades | A2-50, A2-70, A4-70, A4-80 |
| Temperature Range | Material Dependent |
| Corrosion Resistance | Finish Dependent |
| Typical Applications | Machinery, Electronics, Automotive |
ISO 14583 Pan Torx Head Screw Weight Chart
Weight in kgs. per 1,000 pcs. All weights are approximations.
| Diameter/ Length | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 |
|---|---|---|---|---|---|---|---|---|
| 3 | 0.18 | 0.34 | ||||||
| 4 | 0.20 | 0.37 | 0.621 | |||||
| 5 | 0.22 | 0.4 | 0.666 | 1.4 | ||||
| 6 | 0.24 | 0.43 | 0.71 | 1.48 | 2.66 | |||
| 8 | 0.27 | 0.49 | 0.798 | 1.63 | 2.91 | |||
| 10 | 0.31 | 0.55 | 0.876 | 1.79 | 3.16 | 5.14 | 10.9 | |
| 12 | 0.35 | 0.61 | 0.954 | 1.94 | 3.41 | 5.49 | 11.5 | 21.2 |
| 14 | 0.38 | 0.67 | 1.03 | 2.1 | 3.66 | 5.84 | 12.2 | 22.2 |
| 16 | 0.42 | 0.73 | 1.11 | 2.25 | 3.91 | 5.29 | 12.8 | 23.2 |
| 18 | 0.50 | 0.79 | 1.19 | 2.41 | 4.16 | 5.64 | 13.5 | 24.2 |
| 20 | 0.85 | 1.27 | 2.56 | 4.41 | 6 | 14.2 | 25.2 | |
| 22 | 0.91 | 1.35 | 2.72 | 4.66 | 6.35 | 14.8 | 26.2 | |
| 25 | 1 | 1.47 | 2.94 | 5.03 | 6.87 | 15.8 | 27.7 | |
| 28 | 1.09 | 1.59 | 3.24 | 5.4 | 7.4 | 16.8 | 29.2 | |
| 30 | 1.18 | 1.71 | 3.44 | 5.7 | 7.75 | 17.5 | 30.2 | |
| 35 | 3.94 | 6.5 | 8.6 | 19.1 | 32.7 | |||
| 40 | 4.44 | 7.3 | 9.5 | 20.7 | 35.2 | |||
| 45 | 8 | 10.4 | 22.3 | 37.7 | ||||
| 50 | 8.7 | 11.3 | 23.9 | 41.2 | ||||
| 55 | 25.4 | 43.7 | ||||||
| 60 | 27 | 46.2 |
Applications
ISO 14583 Pan Torx Screws are commonly used in:
- Automotive manufacturing
- Electric vehicles
- Electronics assembly
- Data centres
- Telecom equipment
- Industrial machinery
- Robotics
- Medical equipment
- Consumer appliances
- HVAC systems
- Electrical panels
- Automation equipment
- Renewable energy equipment
Advantages
- Excellent torque transmission
- Reduced cam-out compared to Phillips and Pozidriv
- Longer tool life
- Suitable for automated assembly
- Consistent tightening torque
- Improved operator safety
- Lower recess wear
- High resistance to drive stripping
- Available in multiple material grades
- Suitable for repeated assembly/disassembly
- Clean professional appearance
- Compatible with modern production lines
Frequently Asked Questions
What is ISO 14583?
ISO 14583 is the international standard covering hexalobular (internal Torx®) pan head machine screws with metric threads from M2 to M10.
Why use Torx instead of Phillips?
The hexalobular drive transmits higher torque with less cam-out, resulting in improved fastening reliability and reduced tool wear.
What drive sizes are used?
Drive sizes vary according to screw diameter (e.g., T6 through T50 depending on the fastener size).
Are ISO 14583 screws fully threaded?
Yes. ISO 14583 machine screws are supplied with full metric threads unless otherwise specified.
What materials are commonly available?
Carbon steel, alloy steel, stainless steel (A2 & A4), brass, titanium, and aluminium.
Are stainless steel versions available?
Yes. Common grades include A2-70 and A4-70, with A4 recommended for marine and corrosive environments.
What industries commonly use ISO 14583 screws?
Automotive, electronics, telecommunications, industrial machinery, robotics, aerospace, medical equipment, and electrical manufacturing.
Need Technical Assistance or a Quote?
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