DIN7981 DIN7982 DIN7983 SS Self Tapping Screw Marine
The DIN7981 (Pan Head), DIN7982 (Countersunk Flat Head), and DIN7983 (Raised Oval Head) series are cross recessed self tapping screws designed for rapid single-sided installation into sheet metal, extruded profiles, and pre-drilled thin-gauge plates without requiring a tapped hole or nut. The self-tapping thread form cuts its own mating thread into the base material during installation, eliminating secondary threading operations and reducing assembly time by up to 60% compared to conventional machine screw and nut fastening methods.
In shipbuilding, these Stainless Steel Self Tapping Screws are specified for marine electrical cabinet assembly, bridge console panel fastening, engine room control box mounting, HVAC ducting connections, and accommodation area interior panel fitting. The SS316 Self Tapping Screw variant, containing 2-3% molybdenum for enhanced pitting resistance, withstands continuous exposure to salt-laden air and intermittent seawater spray in above-deck installations. The Marine Grade Screw classification ensures compliance with classification society requirements for corrosion resistance in Category C and D marine environments per ISO 12944.
| Product Name | DIN7981 / DIN7982 / DIN7983 SS Self Tapping Screw |
| Standard | DIN7981 / DIN7982 / DIN7983 / ISO 7049 / ISO 7050 / ISO 7051 |
| Head Type | Pan Head (7981) / Countersunk Flat Head (7982) / Raised Oval Head(7983) |
| Size Range | ST 2.2 – ST 9.5 |
| Length Range | 6.5 mm – 50 mm |
| Thread Type | Self-Tapping (Thread-Forming) Type AB / ST |
| Drive Type | Cross Recessed (Phillips H / Pozidriv Z) / Torx TX |
| Material | SS304 / SS316 / Carbon Steel (Zinc Plated) |
| Hardness | Case Hardened 450-560 HV / Through Hardened (Stainless) |
| Application | Electrical Cabinet / HVAC Ducting / Control Panel / Interior Outfitting / Galley Equipment |
| Packaging | Plastic Box / Bulk Carton + Pallet / Kit Packaging |
SINOFASTENER supplies Self Tapping Sheet Metal Screws in bulk and custom kit configurations to shipyards, marine electrical panel manufacturers, and offshore platform outfitters worldwide. All SS316 products are supplied with full material certification per EN 10204 3.1. For custom head styles, non-standard lengths, or bulk quantity pricing on 316 Marine Screws, contact our marine fastening team with your specification.
E-mail: sales@sinofastener.com | SINOFASTENER
