ISO 7380-2:2022
Main standard used for the dimensions in this data sheet.
ISO 7380-2 · 2022
Hexagon socket button head screw with collar
The integral collar provides a wider bearing area with a compact, rounded head. It is part of the head, not a separate washer; check clearance and the bearing surface of the clamped component.
ISO 7380-2:2022 assumes head loadability equal to 80% of thread loadability. This is neither a design working load nor a tightening torque. The marked property class has a leading zero, for example 08.8 or 010.9, to identify reduced loadability.
- Dimensional range
- M3–M16
- Thread
- Metric · coarse pitch
- Configuration
- Reduced-loadability head
Technical drawing and dimensional range
Principal dimensions M3–M16 to ISO 7380-2:2022. Commercial lengths M3–M12; M16, other diameters and lengths on request.
Dimensions in mm. Identification drawing, not a manufacturing drawing.
| M | Pitch P | dk max. | dc max. | c max. | k max. | s | t min. |
|---|---|---|---|---|---|---|---|
| 3 | 0.5 | 5.2 | 6.9 | 0.7 | 1.65 | 2 | 1.04 |
| 4 | 0.7 | 7.2 | 9.4 | 0.8 | 2.2 | 2.5 | 1.3 |
| 5 | 0.8 | 8.8 | 11.8 | 1 | 2.75 | 3 | 1.56 |
| 6 | 1 | 10 | 13.6 | 1.2 | 3.3 | 4 | 2.08 |
| 8 | 1.25 | 13.2 | 17.8 | 1.5 | 4.4 | 5 | 2.6 |
| 10 | 1.5 | 16.5 | 21.9 | 2 | 5.5 | 6 | 3.12 |
| 12 | 1.75 | 19.4 | 26 | 2.4 | 6.6 | 8 | 4.16 |
| 16 | 2 | 26 | 34 | 2.8 | 8.8 | 10 | 5.2 |
Lengths by diameter
Full or partial threading must be confirmed for the individual size and supply. Listed commercial lengths do not guarantee a plain-shank length; b remains ND where the configuration has not been confirmed.
ISO 7380-2:2022 assumes head loadability equal to 80% of thread loadability. This is neither a design working load nor a tightening torque. The marked property class has a leading zero, for example 08.8 or 010.9, to identify reduced loadability.
Materials and property classes
| Material | Class / hardness | Configurable range | Supply |
|---|---|---|---|
| Steel to mechanical specification | 10.9 | M3–M12 | On request |
Other materials and specifications on request
Aluminium →Brass →Nylon →Duplex →Superduplex →ASTM — specification and grade →A2 / A4 stainless — dedicated specification →
For requirements beyond the tabulated combinations, enquire about aluminium, brass, nylon, duplex, superduplex or an ASTM specification. Alloy or grade, dimensions, mechanical requirements and finish are defined for the enquiry; the geometric reference does not automatically imply conformity with the product standard.
Enquire about another material or ASTM specification
Finishes and treatments
| Finish | Material | Class / hardness | M |
|---|---|---|---|
| Black oxide | Steel to mechanical specification | 10.9 | M3–M12 |
Select the finish for the material/property-class combination. Hydrogen relief and lubrication are separate process requirements, not certificates and not implied by the coating name.
ISO, DIN and UNI: key differences
Documentation
Download Dueemme data sheet ↓| Document | Status |
|---|---|
| Declaration of conformity | Subject to order agreement |
| Material certificate | Subject to order agreement |
| EN 10204 2.2 test report | Subject to order agreement |
| EN 10204 3.1 inspection certificate | Subject to order agreement |
| Dimensional inspection report | Subject to order agreement |
| Coating report | Subject to order agreement |
| Other documentation | Subject to order agreement |
Batch documents are not automatically included: specify your requirements in the RFQ.
Mating components
Match nominal diameter, pitch, strength, material, finish and joint conditions.
For this reduced-loadability geometry, select the nut, washer and tightening conditions through a joint assessment. Do not automatically transfer mating-component or preload recommendations from a full-loadability screw of the same property class.
Application sectors
The size you need, including custom specifications
Other diameters, lengths, materials and finishes can be assessed on request. For dedicated production, we agree geometry, requirements and minimum quantities with the customer.
Send your specification →Configure your enquiry
Selections follow the technical combinations in this data sheet. Quantities, delivery terms and documents will be agreed in the quotation.