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What is a DIN 7983-C A2 Stainless Black Oxide Phillips Pan Head Tapping Screw?
DIN 7983-C tapping screws are metric self-tapping sheet metal screws featuring a pan head, Phillips drive, and Form C thread with a blunt point. These screws are designed to form their own mating threads in pre-drilled holes in sheet metal, plastics, and other suitable materials, eliminating the need for pre-tapped threads. Unlike machine screws, DIN 7983-C tapping screws are intended for use in untapped materials and should not be used with machine thread nuts or tapped holes.
The pan head provides a broad bearing surface while remaining above the workpiece after installation. They are also known as Phillips pan head sheet metal screws, pan head tapping screws, self-tapping screws, Form C tapping screws, and Phillips sheet metal screws.
What material is a DIN 7983-C Black Oxide tapping screw made from?
DIN 7983-C screws are manufactured from A2 stainless steel and feature a black oxide surface treatment. Unlike plated finishes, black oxide is a chemical conversion of the metal's surface rather than a coating, adding virtually no dimensional thickness while preserving thread fit and fastener tolerances. The excellent corrosion resistance comes primarily from the underlying A2 stainless steel, while the black oxide finish provides a durable, low-reflective matte black appearance that blends well with dark-colored equipment, architectural hardware, and visible assemblies. The Phillips drive offers quick, reliable installation using widely available tools.
Why choose an A2 stainless black oxide DIN 7983-C tapping screw?
A2 stainless black oxide DIN 7983-C screws combine the corrosion resistance of stainless steel with an attractive matte black finish.
- Abrasion resistant, does not peel, chip or rub off
- Reduces friction, prevents galling
- Does not change the strength of the stainless steel
- Practically no dimensional change to base fastener
The black oxide coating per MIL-DTL-13924, Class 4 on 300 series corrosion resistant steel meets 96 hours of resistance in a 5% salt spray (fog) test in accordance with ASTM B117. We recommend using stainless steel installation tools to prevent extraneous rust.
Where are DIN 7983-C A2 stainless black oxide tapping screws commonly used?
DIN 7983-C A2 stainless black oxide Phillips pan head tapping screws are widely used in electronics enclosures, automotive accessories, architectural hardware, lighting fixtures, HVAC equipment, machinery, control panels, transportation equipment, marine accessories, robotics, and general industrial assemblies. Their combination of excellent corrosion resistance, matte black appearance, self-tapping Form C thread, pan head design, and Phillips drive makes them an ideal choice for OEM manufacturing, maintenance, repair, and applications where both appearance and long-term fastening performance are important.
