Aesthetic Flush Fitting
Combines a flush countersunk base with a rounded oval top, eliminating sharp edges while delivering a sleek, premium visual appeal for exposed panels.
DIN 7983 Cross Recessed Raised Countersunk Head Tapping Screws
- Standard: DIN 7983
- Material: SUS304, SUS316, SUS410, Carbon Steel
- Thread Size: ST2.2 – ST6.3
- Surface Treatment: Plain, Zinc Plated, HDG, Dacromet, Ruspert
- Thread Type: Self-tapping Thread
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
DIN 7983 is a cross-recessed semi-countersunk self-tapping screw that has now been superseded by the international standard ISO 7051.
It is also commonly referred to as a semi-countersunk or domed-head self-tapping screw and is frequently used for fastening thin metal sheets, plastics, or wood, combining the flush finish of a countersunk screw with the aesthetic appeal of a round-head screw.
Draw
Specification
Key Technical Specifications
Head Style: Raised Countersunk (Oval Head)
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Design: It features a countersunk cone (typically an 80° to 90° angle depending on the exact standard variant) that sits flush within a chamfered hole, but has a slightly rounded, decorative dome top.
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Purpose: It combines the flush-fitting neatness of a countersunk screw with the aesthetic appeal and slight extra drive depth of a pan head.
Thread Type: Tapping (Form A or Form C)
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These screws are designed to cut or form their own mating threads when driven into pre-drilled or punched holes in sheet metal, plastics, or resin-bonded materials.
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Form C: Pointed end (most common for general sheet metal).
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Form F: Flat/blunt end (often used when clearance space behind the substrate is limited).
Drive Types
Traditionally, DIN 7983 specifies a cross recess (Phillips or Pozidriv), though modern manufacturing often adapts the head shape to Torx (six-lobe) drives for better torque transfer in automated assembly.
Product Advantages
Efficient Self-Tapping Capability
Elimination of pre-tapping streamlines automated assembly, while the interference fit ensures superior vibration and looseness resistance.
High Torque Transfer
The extra head thickness allows for deeper drive recesses (Phillips/Torx), minimizing cam-out and enduring higher installation torque.
Common Questions
What are the main differences between DIN 7983 and ISO 1483?
Minor head and recess dimension variations. They are functionally interchangeable globally.
Why do stainless steel DIN 7983 screws require pre-drilled pilot holes?
Unhardened stainless steel lacks sufficient hardness to pierce metal substrates without shearing.
Can DIN 7983 tapping screws replace self-drilling screws in production?
No. Self-drilling screws integrate a drill point; tapping screws require pilot holes.
What is required when using DIN 7983 in high-vibration applications?
Apply thread-locking adhesives or specify modified anti-loosening features to prevent back-out.
