M4x18 ISO 14581 Torx T20 A4-70 screws - 1000 pcs.
M4x18 ISO 14581 screws with flat countersunk head and Torx T20 drive, stainless steel A4-70. Approximate ISO 14581 reference. Metric thread M4 with 0,7 mm pitch. Pack of 1000 pieces; catalogue weight for the quantity 1,680 kg. Lead time: 7-14 days.

M4x18 ISO 14581 Torx T20 A4-70 screws
Machine screws with a flat countersunk head, a conical underside and a hexalobular Torx T20 drive. Made of stainless steel A4, property class 70. Intended for connections with a matching M4 metric thread.
ISO 14581 and DIN 965 are approximate catalogue references, without a declaration of strict conformity to the standards.
Dimensions and design
Overall length L = 18 mm includes the head. Maximum head diameter dk is 8,4 mm and maximum head height k is 2,7 mm. The M4 thread has a pitch of 0,7 mm. This length is fully threaded.

Technical specifications
| ISO reference | Approximate ISO 14581 |
|---|---|
| Material | Stainless steel A4 |
| Property class | 70 |
| Thread size | M4 |
| Overall length l [mm] | 18 |
| Head type | Flat countersunk head |
| Drive | Torx T20 |
| Thread type | Metric |
| Thread specification | Full |
| Thread pitch [mm] | 0,7 |
| Maximum head diameter dk [mm] | 8,4 |
| Maximum head height k [mm] | 2,7 |
| Head angle [°] | 90 |
| DIN reference | Approximate DIN 965 |
| Number of pieces per pack | 1000 |
| Catalogue weight for the quantity [kg] | 1,680 |
| EAN | 8715494623940 |
| Code | 55303.040.018 |

Thread diameter d = M4.
Overall length L = 18 mm.
Maximum head diameter dk = 8,4 mm.
Maximum head height k = 2,7 mm.
Head cone angle = 90°.
Scope of delivery and weight
The price covers one pack of 1000 M4x18 screws. The catalogue weight of this quantity is 1,680 kg, based on 1,68 g/pc. x 1000 pieces, rounded to the nearest gram. This is the catalogue weight of the screws; it does not include a confirmed carton weight. The graphics are original illustrative images of the family and a neutral depiction of the packaging. Dimensions of the specific variant are stated in the specifications. The thread and drive are shown schematically; the diagram is not a manufacturing drawing.
Frequently asked questions
How many screws does the stated price cover?
One pack of 1000 M4x18 ISO 14581 screws.
Which tool fits the drive?
Torx T20 bit for the hexalobular drive.
How is the 18 mm length measured?
The overall length is measured including the flat countersunk head.
What is the lead time?
The lead time is 7-14 days.
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Number of pieces per pack1000
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MaterialA4 stainless steel
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Thread typeMetric
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Thread pitch [mm]0,7
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Strength class70
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Overall length l [mm]18
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Head typeFlat countersunk
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Reference DINApproximate DIN 965
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Head diameter dk max. [mm]8,4
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Head height k max. [mm]2,7
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Head angle [°]90
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Reference ISOApproximate ISO 14581
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EAN8715494623940
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Thread designSolid
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Thread sizeM4
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DriveTorx T20
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Catalogue mass of quantity [kg]1,680
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Reference55303.040.018
1. Eye protection:
– Always wear safety goggles or a face shield to protect your eyes from sparks, particles and metal fragments.
2. Hearing protection:
– When working in a noisy environment, use ear defenders or earplugs to prevent hearing damage.
3. Respiratory protection:
– When working in dusty surroundings or in the presence of fumes, wear a filtering mask or an appropriate respirator.
– Ensure proper ventilation of the workstation.
4. Hand and skin safety:
– Use protective gloves that protect against mechanical injuries and chemicals.
– Where necessary, use protective creams to prevent irritation and dry skin.
5. Work clothing:
– Work in protective clothing resistant to sparks and splashes.
– Avoid loose clothing, jewellery and loose hair near machinery.
6. Fire risk:
– Keep the workstation free of flammable materials (e.g. paper, fabrics and chemicals).
– Keep a serviceable fire extinguisher close at hand and know how to use it.
7. Electrical hazards:
– Check the condition of cables and electrical equipment before use.
– Do not use electrical devices in damp conditions.
– Disconnect equipment from the power supply during maintenance or repairs.
8. Use of machinery and tools:
– Regularly inspect the technical condition of machines and tools.
– Use equipment in accordance with the manufacturer's instructions.
– Blades and tools should be maintained regularly and kept in good condition.
– Machines should be fitted with appropriate guards and protective devices.
9. Handling materials:
– Use handling equipment to move heavy components.
– Lift and carry using ergonomic practices to avoid injury.
10. Working with chemicals:
– Store chemicals in labelled, safe containers.
– Use substances in accordance with the manufacturer's instructions and occupational health and safety rules.
– Ensure air circulation when using chemicals.
Other important rules:
– Keep the workstation clean and tidy.
– Ensure adequate lighting in the working area.
– Provide occupational health and safety training.
– Carry out regular safety audits and comply with current regulations.

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