Cup head square neck bolt
DIN geometry, materials and finishes for the same product type in one data sheet. Enter the required length freely in the quotation request.
DIN 603 / ISO 8677 / UNI 5731
- Dimensional reference
- DIN 603
- Pitch
- Coarse
- Drive
- Square neck
- Units
- mm
Representative geometry photograph. Material and finish are specified separately.
Technical drawing
Reference drawing from the Berardi catalogue. Dimensions in mm; not to scale.
- d
- Nominal diameter
- dk
- Head diameter
- v
- Square neck width
- k max.
- Maximum head height
- h
- Square neck height
Reference geometry
Dimensions in mm. Supply lengths are not listed: specify the required length in your enquiry.
| d | dk | v | k max. | h |
|---|---|---|---|---|
| M5 | 13 | 5 | 3.3 | 4.1 |
| M6 | 16 | 6 | 3.88 | 4.6 |
| M8 | 20 | 8 | 4.88 | 5.6 |
| M10 | 24 | 10 | 5.38 | 6.6 |
| M12 | 30 | 12 | 6.95 | 8.75 |
DIN dimensions from the Berardi catalogue. Diameters and dimensions are not an availability list. Length and threaded portion are defined in the enquiry.
Materials, grades, finishes and treatments
| Material | Grade | Finish |
|---|---|---|
| Steel | 4.8 | Uncoated; clear zinc plated |
| Steel | 8.8 | Uncoated; clear zinc plated |
| Stainless steel A2 | Grade to be specified to ISO 3506-1 | To be specified |
| Stainless steel A4 | Grade to be specified to ISO 3506-1 | To be specified |
| Polyamide / nylon - similar execution | Not applicable | Natural |
Material, grade, coating and execution must be agreed in the quotation; not all combinations are implied. Geometric dimensions do not indicate availability by material. For high-strength steels with electrolytic coatings, define hydrogen embrittlement requirements to ISO 4042.
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.
Standards, executions and application
The square neck prevents rotation when correctly engaged with its mating recess. Distinguish partial thread (UNI 5731 reference) from full thread (UNI 5732 reference). The version with a DIN 555 nut remains in this family: request the nut explicitly. ISO 8677 is a related reference, not a declaration of dimensional identity.
Configure your enquiry
Select the diameter and enter the required length in the specifications, together with material, finish and quantity. Dueemme will confirm supply in its quotation.
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.
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