This product is an M3 x 8mm slotted cheese head machine screw manufactured to DIN 84 (ISO 1207) dimensions and intended for fastening components into pre‑tapped holes or securing assemblies with a matching nut. Its primary use is where a neat, low cylindrical head and a simple slotted drive are required, for example in instrument panels, electrical enclosures and small mechanical assemblies.

The screw is produced from A4 stainless steel (commonly referred to as 316 stainless, EN 1.4401/1.4404), providing improved resistance to chloride stress and pitting compared with A2/304 grades. Threads are metric ISO coarse (M3, standard pitch 0.5 mm) and the head profile and slot conform to DIN 84 / ISO 1207 dimensional standards. The finish is a machined bright stainless surface, typically passivated to restore the natural oxide layer and further enhance corrosion resistance. Mechanical and corrosion behaviour for A4 fasteners fall under EN ISO 3506 specifications for stainless steel fasteners.

Typical applications include marine and coastal equipment, food processing machinery, chemical plant fittings and outdoor architectural fixings where exposure to salt, moisture or aggressive atmospheres is a concern. Because of the small M3 size, these screws are frequently used in electronics, instrumentation, lighting fittings and small assemblies where space is limited and a shallow head is desirable. The slotted drive allows assembly with a standard flat blade screwdriver; note that a single‑slot drive offers easier alignment but lower torque capacity than cross‑recessed drives.

Key benefits are the superior corrosion resistance of A4/316 material in chloride environments, standardised DIN/ISO dimensions for interchangeability, and the compact cheese head that gives a low profile finish while distributing bearing load over a larger area than a countersunk head. Compatibility wise these screws are intended for use with M3 tapped holes or M3 nuts and with matching A4 washers and nuts to avoid galvanic or differential corrosion issues.

Duchy Fasteners stocks this item under code A4MCCH030008 and supplies M3 x 8mm slotted cheese screws in A4/316 stainless steel as singles, small packs and bulk quantities. We also carry other M3 lengths and matching A4 nuts and washers to complete assemblies.