Contact Platform Support
Help CenterDIN 7981 Phillips Pan Head Self-Tapping Screw
Product Spotlights
Related Products
-
Hex Washer Head Thread-Cutting Self-Tapping ScrewNegotiableMOQ: 1000 Pieces -
Wafer Head Phillips Thread-Cutting Self-Tapping ScrewNegotiableMOQ: 1000 Pieces
-
Large Flat Head Phillips Drive Self-Tapping Screw MetricNegotiableMOQ: 1000 Pieces
-
Nickel-Plated DIN 7982 Countersunk Phillips Tapping ScrewNegotiableMOQ: 1000 Pieces
-
Copper-Plated Pan Head Combination Drive Self-Tapping Screw, Metric ThreadNegotiableMOQ: 1000 Pieces
The DIN 7981 Phillips Pan Head Self-Tapping Screw is a fundamental fastening component widely utilized across diverse manufacturing and construction sectors. This specialized screw is engineered to cut its own thread as it is driven into a mating material, eliminating the need for a pre-tapped hole. This self-tapping capability significantly streamlines assembly processes, reducing labor time and associated costs. The DIN 7981 standard, harmonized with ISO 7049, ensures consistent dimensions, tolerances, and performance characteristics, making it a globally recognized and trusted choice for B2B procurement.
The defining technical features of the DIN 7981 screw lie in its head geometry, drive system, and thread form. The pan head design features a flat bearing surface underneath and a slightly rounded, cylindrical top. This profile provides a larger bearing area than countersunk heads, distributing the clamping load more effectively and minimizing the risk of the screw head pulling through softer materials or thin sheet metal. The screw utilizes a Phillips cross-recessed drive (Type H), which offers excellent centering capability, allowing the driver bit to seat securely and reducing the risk of cam-out during installation. The thread form is typically coarse with a sharp point, designed to efficiently pierce and form threads in materials such as plastics, sheet metal, and wood.
DIN 7981 self-tapping screws are manufactured from a variety of materials to suit different environmental and structural requirements. Common materials include high-quality carbon steel, often case-hardened to provide the necessary strength for tapping into harder materials. For applications demanding high corrosion resistance, stainless steel grades such as A2 (AISI 304) and A4 (AISI 316) are extensively used. Surface treatments are applied to steel variants to enhance durability and aesthetics. Zinc plating (blue, clear, or yellow) is the most common finish, providing a sacrificial barrier against corrosion. Other finishes like black zinc, nickel plating, and various lacquers are available to meet specific environmental or cosmetic needs.
The DIN 7981 standard precisely defines the dimensions and tolerances for these self-tapping screws, ensuring interchangeability and consistent performance. The metric thread sizes typically range from M2.2 to M6.3 in diameter, with lengths extending up to 38mm. The adherence to DIN 7981 and its equivalent ISO 7049 guarantees that these fasteners meet stringent quality and performance criteria. For stainless steel variants, compliance with DIN EN ISO 3506 ensures specific mechanical properties and chemical compositions are met.
DIN 7981 Phillips Pan Head Self-Tapping Screws are highly versatile and find extensive use across numerous industries. They are used in the automotive industry for interior trim and dashboard assembly; in electronics and appliances for assembling casings and securing internal components; in construction and HVAC for light-gauge sheet metal applications; and in furniture and general manufacturing.
Proper installation is crucial for maximizing the performance and longevity of DIN 7981 self-tapping screws. It is recommended to use a pre-drilled pilot hole, the size of which should be carefully selected based on the screw's diameter and the substrate material. The use of a Phillips drive bit that perfectly matches the screw's recess is essential to prevent cam-out. Driving the screw at a consistent, moderate speed is advised to allow the threads to form correctly without stripping the material. Over-tightening should be avoided. Choosing DIN 7981 Phillips Pan Head Self-Tapping Screws offers efficiency, versatility, reliability, durability, ease of use, and cost-effectiveness.
Send Inquiry to This Supplier
You May Also Like
-
Hex Washer Head Self-Tapping ScrewNegotiableMOQ: 1000 Pieces
-
Pan Head Combination Drive Self-Tapping ScrewNegotiableMOQ: 1000 Pieces
-
Countersunk Phillips Head Self-Drilling ScrewNegotiableMOQ: 1000 Pieces
-
Bugle Head Phillips Drive Metric Self-Drilling ScrewNegotiableMOQ: 1000 Pieces
-
Hex Washer Head Self-Drilling ScrewNegotiableMOQ: 1000 Pieces
-
Pan Head Phillips Self-Drilling ScrewNegotiableMOQ: 1000 Pieces
-
Wafer Head Phillips Self-Drilling ScrewNegotiableMOQ: 1000 Pieces
-
Coarse Thread Drywall ScrewNegotiableMOQ: 1000 Pieces
-
Fine Thread Drywall Screw With Bugle Head and Phillips Drive for Metal StudsNegotiableMOQ: 1000 Pieces
-
Double Countersunk Torx Drive Chipboard ScrewNegotiableMOQ: 1000 Pieces
