Stainless Steel Self-Tapping Screws
Product Overview
SS304 Square Slot US Standard Pan Head Self‑Tapping Screws are high‑performance fasteners strictly designed in accordance with US standard ASME/ANSI B18.6.3. They are precision‑made from food‑grade 304 austenitic stainless steel, integrating three core designs – pan head profile, square drive recess, and self‑tapping sharp point. Without pre‑tapping, they can be directly driven into various substrates such as wood, plastics, and thin‑gauge sheet metals, combining installation convenience, structural stability, and long‑term durability. They are the preferred fastener choice for furniture manufacturing, outdoor projects, and equipment assembly.
Product Applications
Furniture Manufacturing: Widely used in the assembly and fixing of solid wood furniture, panel furniture, and outdoor tables and chairs. The rust resistance of 304 stainless steel suits outdoor furniture on balconies and patios, while the pan head design ensures a smooth and even surface.
Building and Renovation Projects: Suitable for fixing light‑gauge steel framing, splicing wooden panels, and installing panels in damp areas such as kitchens and bathrooms. The corrosion‑resistant properties effectively prevent structural loosening caused by screw rusting.
Equipment and Sheet Metal Assembly: Used in assembling plastic enclosures, thin‑sheet metal equipment, and electrical appliance housings. The self‑tapping design enables rapid fastening, and the square drive recess meets the high‑torque, high‑reliability requirements of equipment assembly.
Export Products Compliant with US Standards: The design conforms to US standard specifications, directly fitting the fastener needs of US‑standard equipment and export products, and is compatible with US standard tools and matching parts without the need for additional adjustment.
Product Features
304 Stainless Steel Material: Corrosion‑ and rust‑resistant, suitable for humid and outdoor environments, with a service life far exceeding ordinary galvanised screws; excellent toughness resists deformation and brittle fracture.
Square Drive Recess Design: Multiple contact surfaces for efficient torque transmission, reducing cam‑out during installation, suitable for high‑torque tightening and anti‑tamper applications.
Pan Head Profile: Provides a smooth and neat appearance after installation; the large bearing area prevents crushing of the workpiece surface.
US Standard Self‑Tapping Thread: Optimised sharp point design eliminates the need for pre‑drilling and tapping, enabling efficient installation, compatible with wood, plastics, thin sheet metals, and other materials.
| Material | 304 stainless steel |
| Surface Treatment | Wash white |
| Head Type | Pan head |
| Slot Type | Square groove |
| Thread Type | Full thread |
| Screw Diameter | approx. 3.5mm to 4.8mm |
| Screw Length | Optional (12mm to 50mm) |
| Screw Type | Self-tapping screw |
| Corrosion Resistance | High (suitable for humid, outdoor, mild acid-alkali environments) |
| Applicable Tools | Square bit or power tool |

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malingfei@linghongscrew.com

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