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    Founded in the 1990s, it is a large hardware and fastener manufacturer integrating R&D, production and sales. It is equipped with advanced production equipment and automated assembly lines with strong annual output capacity, holds a full range of honors and a sound quality inspection system, specializing in various self-drilling screws, bolts and customized special-shaped fasteners.

Pan Head Self-Tapping Screws

Pan Head Self-Tapping Screws
Brand: Hengzuan
Product Name: Cross Recessed Pan Head Self-Tapping Screws (National Standard GB/T845-1985)
Surface Finish: Blue-white electro-galvanized; color zinc plating and black oxide treatment are optional
Specifications: Full stock of ST2.9/ST3.5/ST4.2/ST4.8/ST5.5/ST6.3 sizes; complete shank lengths ranging from 13mm to 80mm. Custom non-standard lengths are available.
Packaging: Separately packed in 25kg cartons and bundled on full wooden pallets.

Product Details

Pan Head Self-Tapping Screws


I. Application Fields & National Standard Basis

This product is manufactured in strict compliance with national standard GB/T845-1985, featuring a smooth rounded Phillips pan head. It is mainly used for assembling plastic parts, MDF, solid wood boards, plastic housings of home appliances and small hardware components.

A pilot hole shall be pre-drilled before installation; full threads enable firm fastening after screwing in. Widely applied to the assembly of small home appliances, toys, furniture interior trims and electrical fittings, large quantities are exported year-round to building material markets across Southeast Asia, the Middle East and Africa.

II. Raw Materials & Production Processes

Premium carbon steel is adopted as raw material. The complete production workflow consists of nine procedures: raw material rough drawing, annealing, phosphating, fine drawing, cold heading forming, thread rolling, thermal refining treatment, galvanizing and packaging.

The smooth curved pan head leaves no protruding edges to scratch workpiece paint coatings after installation. Fine and sharp thread profiles prevent cracking when screwed into wood and plastic substrates. The uniform and dense blue-white zinc coating isolates moisture and oxidation, delivering long service life under ordinary humid indoor conditions.

III. Core Product Advantages

Smooth Pan Head Protects Workpieces

The spherical pan head sits flush inside assembly holes for a burr-free flat surface, avoiding scratches on coatings of plastic and painted parts.

Compatibility with Multiple Substrates

Suitable for fastening solid wood, MDF, PVC plastic and ABS plastic, applicable to various scenarios including furniture and electrical equipment assembly.

Flexible Multi-Coating Options

Standard blue-white zinc finish offers high cost performance for general indoor use; color zinc provides superior salt spray resistance for semi-outdoor environments; low-cost black oxide finish is designed for concealed assembly inside equipment.

IV. Quality Control, Warehousing & Supporting Services

All national standard sizes are permanently stocked. Standard orders can be dispatched within 48 hours. We accept small-batch trial orders and full-container export orders.

Before delivery, sampling inspections are conducted in accordance with national standards to check pan head dimensions, cross recess strength, thread sharpness and coating adhesion, eliminating defective products with cracked slots and incomplete threads.

Complete fastener sets bundled with pan head self-drilling screws and various self-tapping screws are available for shipment. Custom extended non-standard sizes can be produced against customer samples, with stable production capacity to guarantee long-term supply.


OUR STRENGTHS

Production Capacity

The company covers an area of 40,000 square meters with over 300 employees, achieving an annual output of more than 20,000 tons each for self-drilling screws and hot-dip galvanized bolts, capable of standard supply and customized special-shaped fastener production.

Production Equipment

It is equipped with over 200 sets of advanced Taiwan-origin self-drilling screw production equipment and 6 numerical control production lines, featuring advanced hardware configuration and high automated production level.

Quality Control

Following the ISO9001:2015 quality management system, the company has built a complete quality inspection laboratory and implements strict full-process quality control and testing from raw materials to finished products.

Certifications

The enterprise has obtained a number of industry honors and national 3A-level quality and integrity brand certification, holding industry status as the Vice Chairman Unit of Hebei Fastener Association and Executive Director Unit of relevant national chambers of commerce.

Production Capacity Production Equipment Quality Control Certifications

OUR STRENGTHS

Production Capacity

Production Capacity

The company covers an area of 40,000 square meters with over 300 employees, achieving an annual output of more than 20,000 tons each for self-drilling screws and hot-dip galvanized bolts, capable of standard supply and customized special-shaped fastener production.

Production Equipment

Production Equipment

It is equipped with over 200 sets of advanced Taiwan-origin self-drilling screw production equipment and 6 numerical control production lines, featuring advanced hardware configuration and high automated production level.

Quality Control

Quality Control

Following the ISO9001:2015 quality management system, the company has built a complete quality inspection laboratory and implements strict full-process quality control and testing from raw materials to finished products.

Certifications

Certifications

The enterprise has obtained a number of industry honors and national 3A-level quality and integrity brand certification, holding industry status as the Vice Chairman Unit of Hebei Fastener Association and Executive Director Unit of relevant national chambers of commerce.

 

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