Screw A2 M6 x 40 mm (ISO 7380-2) — pan/round head with internal hex and washer
This A2 stainless steel screw in the M6 x 40 mm version complies with ISO 7380-2 (DIN EN ISO 7380) and is supplied under MPN 479.02.00 (GTIN 4026303433341). The product is a pan/round head screw with internal hex (Allen) and integrated washer, intended for applications where a low, rounded head and a larger flat bearing surface around the screw shaft are desirable.
Function
The screw head’s washer increases the contact area between head and mounting surface and reduces the risk of material embedding in softer workpieces. The internal hex allows controlled torque application via a hex key and is well suited for joints where a visible, low head and good centering function are desired. ISO 7380-2 also means that the head shape is standardized for consistent fit in, for example, washers and enclosure openings.
Material and corrosion resistance
The screw body is made of A2 stainless steel (austenitic chrome-nickel steel). The A2 material provides good general corrosion resistance under normal atmospheric conditions and indoor/outdoor use without strong chemical exposure or saltwater environments. The material choice results in moderate high strength compared with ordinary carbon steel, but not the same strength class as hardened bolts; therefore, use should be evaluated based on load requirements.
Technical properties
- Thread: M6 x 1.0
- Length: 40 mm (measured from under the head to the end of the thread)
- Head form: pan/round head with washer (ISO 7380-2)
- Drive: internal hex (Allen)
- Material: A2 stainless steel
- Surface color: silver-like, natural stainless finish
- Standard: DIN EN ISO 7380
- Manufacturer designation in technical data: Dresselhaus
Compatibility and application areas
The screw format fits standard M6 pass-throughs and predrilled holes for pan/round heads. The washer makes it suitable for use in plates or components where a larger bearing surface is desired without increasing head height. Typical applications include mechanical joints on frames, brackets, covers, and internal mounting points on motorcycles and machinery, where corrosion resistance and a clean appearance are desired.
Limitations and installation notes
A2 stainless steel has good corrosion resistance, but for highly corrosive environments (saltwater, acids) A4 material may be preferable. A2 screws are not normally heat-treated to high strength classes; if there are requirements for high tensile strength or shear torque, the strength class should be specified separately. The screw is supplied without gasket/washer package and without a hole for locking wire.
Identification
MPN: 479.02.00 — GTIN: 4026303433341. These codes can be used for procurement, spare parts orders, and inspection upon receipt to ensure correct ISO 7380-2 execution.
Additional technical data (excerpt)
- Type: standard bolt/screw type
- Drive type: Allen (internal hex)
- Quality/classification in technical data: not specified as high-strength/hardened
- Gasket/washer: none
Contact your supplier or technical responsible if there are uncertainties about tensile requirements, material selection in aggressive environments, or when a specific strength class beyond the standard A2 version is desired.
