Premium DIN 7982 Cross Recessed Countersunk Head Self Tapping Screws
Unlike standard fasteners, our DIN 7982 (ISO 7049) screws are manufactured using premium C1022 carbon steel with a specialized case-hardening process. This ensures a hard outer shell for easy thread cutting while maintaining a tough core to prevent snapping under high torque.
Perfect Flush Finish: The precise 90° countersunk head sits perfectly flat against the surface, ideal for aesthetic and aerodynamic requirements.
Anti-Camout Drive: Optimized Phillips (Cross) recess geometry minimizes stripping and allows for higher installation speeds.
Superior Corrosion Resistance: Standard zinc plating passes 48-72 hours salt spray test. Optional Geomet® and Dacromet coatings available for up to 1000+ hours protection.
Sharp Thread Design: Aggressive thread pitch enables rapid penetration into steel sheets, aluminum, and hard plastics without pre-drilling (depending on material thickness).
Key Features
Head Style
Flat countersunk (90°) for flush installation
01
Drive Type
Phillips cross drive for better torque transfer
02
Thread
Self-tapping, forms threads in metals or plastics
03
Surface
Available in zinc-plated, stainless steel (A2, A4), or black oxide finish
04
Sizes
Metric and inch dimensions standardized by DIN 7982
05
Technical Properties
● Standard: DIN 7982 / ISO 7049 equivalent
● Material: Carbon steel (hardened), stainless steel A2/A4
● Hardness: Case-hardened for durability
● Drive Recess: Phillips (ISO 8764-1)
● Head Angle: 90° flat countersunk
Applications
DIN 7982 flat head Phillips self-tapping screws are widely used in:
● Electrical and electronic enclosures
● Sheet metal fabrication
● Furniture and cabinet making
● HVAC and ducting
● Plastic components assembly
The flush-fitting head makes them especially suitable for areas where a smooth surface is required.
DIN 7981 vs. DIN 7982: Which One Do You Need?
Confused between pan head and countersunk? Here is the quick guide:
DIN 7981 (Pan Head): The head protrudes above the surface. Best for general assembly where flushness is not required.
DIN 7982 (Countersunk Head): The head sits flush with or below the surface. Choose this if you need a smooth finish, aerodynamic flow, or if the screw head might interfere with other parts.
Not sure? Contact our engineers for a free consultation.
ASME IFI And Metric Standard Size
|
Diameter |
Length |
|
#6-20(ST3.5) |
1/2''-2''inch (13-50mm) |
|
#8-18(ST4.2) |
1/2''-2''inch (13-50mm) |
|
#10-16(ST4.8) |
1/2''-4''inch(13-100mm) |
|
#12-14(ST5.5) |
1/2''-6''inch(13-150mm) |
|
#14-14(ST6.3) |
1/2''-6''inch(13-150mm) |
Technical Specifications
| Feature | Specification |
|---|---|
| Standard | DIN 7982 / ISO 7049 |
| Head Style | Countersunk Flat Head (90°) |
| Drive Type | Cross Recessed (Phillips PH) |
| Material Options | Carbon Steel (C1022, Case Hardened), Stainless Steel (SS304/A2, SS316/A4) |
| Surface Finish | Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Phosphate, Dacromet, Geomet |
| Hardness | Core: HV 350-450 | Case: HV 550+ (Customizable) |
| Thread Types | Type A, AB, B, C, D (Upon Request) |
| Size Range | M3 - M12 (#6 - #24) |
Frequently Asked Questions (FAQ)
Q: What is the hardness of your DIN 7982 screws?
A: Our carbon steel screws are case-hardened. Typically, the core hardness is between 350-450 HV, and the surface hardness exceeds 550 HV, ensuring they can tap into hard metals without breaking.
Q: Do you offer custom packaging?
A: Yes. We provide bulk carton packing, small retail boxes, blister packs, and labeled bags according to your specific requirements.
Q: Can these screws pass a 500-hour salt spray test?
A: Standard zinc plating usually passes 48-72 hours. For 500+ hours, we recommend our Geomet® or Dacromet coating options. Please specify your environment needs when requesting a quote.
Q: What is the lead time for a 1-ton order?
A: For standard sizes and finishes, our lead time is typically 15-20 days. Custom coatings or non-standard sizes may take 25-30 days.
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