Pan Head Self-Drilling Screw

Pan Head Self-Drilling Screw

This cross recessed pan head self-drilling screw is manufactured strictly in accordance with national standard GB/T15856.1-2002, as a premium Grade A self-drilling and self-tapping screw. Made of high-quality SWRCH22A cold heading carbon steel with full galvanized anti-rust treatment, it features high hardness, fast drilling speed, low risk of drill-point breakage, rust resistance and long service life. No pre-drilling or pre-tapping required; drilling, tapping and locking can be completed in one operation, greatly improving construction efficiency for steel structure, color steel and panel installation. It is a universal high-quality fastener for light metal fastening.

II. Core Product Parameters

Applicable Standard: GB/T15856.1-2002 (National Standard for Cross Recessed Pan Head Drilling Screws with Tapping Screw Thread) Material: High-quality SWRCH22A cold heading steel Product Grade: Grade A (High precision, burr-free and regular threads) Head Type: Pan Head; Recess Type: Type A Cross Recess Thread Specification: Class A standard thread Regular Stock Sizes: 4.2×13, 4.2×25, 4.8×16, 4.8×50 Customization Available: Screw length and model can be customized. Maximum customizable nominal length: 100mm; special M16 model available upon request Surface Treatment: Galvanized for rust and corrosion resistance, suitable for humid outdoor environments Main Packaging Spec: 4.2×13 (24,000 pcs / 30 boxes per carton). Competitive price for large volumes, specially supplied for engineering bulk orders.

III. Product Advantages

1. Premium SWRCH22A base material with balanced toughness and hardness Fabricated from dedicated cold heading forming steel with fine grain structure and stable strength. The drill point is sharp and wear-resistant, resisting tip chipping and screw fracture under high-speed driving. It delivers strong tensile resistance and stable long-term fastening performance, fully meeting standards for home decoration, steel structures and enclosure projects.

2. Galvanized anti-corrosion process for enhanced durability Full hot-dip galvanizing or electro-galvanizing treatment delivers uniform coating with strong adhesion, effectively isolating oxidation from air and rainwater. Rust and moisture resistant, suitable for long-term service on outdoor color steel roof panels, wall panels and outdoor equipment.

3. Pan head with Type A recess design for neat and flush installation Standard Type A cross recess fits ordinary Phillips electric bits, achieving tight engagement and preventing slipping. The pan head sits flat against the panel surface after tightening with smooth appearance, no protrusion and no sharp edges, ideal for decorative panel installation.

4. Integrated self-drilling & self-tapping design for efficient and labor-saving construction Built with high-strength drill point, it can directly drill and tap holes on color steel sheets, galvanized plates, light steel keels and thin steel structures. Eliminates separate drilling and tapping procedures to greatly cut labor costs and support rapid mass installation.

5. Complete size range and non-standard customization available Full range of commonly used 4.2 and 4.8 sizes kept in stock, covering both short and long lengths. Custom length up to 100mm and special M16 model are available to satisfy special working conditions and non-standard engineering requirements.

IV. Application Scope

Fastening installation of color steel tiles, color steel roof and wall panels Fastening for light steel keels, partition walls and ceiling panels Joint fixing of galvanized steel sheets and thin iron plates Assembly of advertising boards, fences, small photovoltaic brackets and outdoor hardware General fastening for factory renovation, municipal projects, residential and commercial decoration

V. Packaging & Supply

Our flagship size 4.2×13 is supplied as standard: 24,000 pcs per carton packed in 30 separate boxes. Tidy packaging with precise counting, no mixed sizes or defective goods. Ample stock for the full product range. Bulk production available for large engineering orders and customized sizes. Warranty and factory documents can be provided, with stable long-term supply