Torx Countersunk Screws (GB/T 2673-2000 / ISO 14581)

FULLERKREG manufactures Torx countersunk flat-head screws to GB/T 2673-2000 and ISO 14581 standards. Featuring a 90° countersunk head with an internal Torx (TX) drive, these screws deliver superior torque transmission, reduced cam-out risk, and a flush-mount finish. Available in multiple materials and surface treatments to suit corrosion, strength, and compliance requirements across a wide range of industries.

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Available Series

Torx Countersunk Screws (GB/T2673-2000 / ISO 14581) — Stainless Steel (A2)
Material: A2 (SUS 304)  ·  Surface: Passivated & Whitened  ·  Grade: A2-70  ·  Size: M2–M10

Torx Countersunk Screws (GB/T2673-2000 / ISO 14581) — Marine Stainless Steel (A4)
Material: A4 (SUS 316)  ·  Surface: Passivated & Whitened  ·  Grade: A4-70  ·  Size: M2–M10

Torx Countersunk Screws (GB/T2673-2000 / ISO 14581) — Alloy Steel (Class 10.9) — Black
Material: Alloy Steel 10B21  ·  Surface: Black Oxide  ·  Grade: Class 10.9  ·  Size: M3–M12

Torx Countersunk Screws (GB/T2673-2000 / ISO 14581) — Alloy Steel (Class 10.9) — Zinc Cr3
Material: Alloy Steel 10B21  ·  Surface: Zinc Cr3 (RoHS / ELV Compliant)  ·  Grade: Class 10.9  ·  Size: M3–M12

Torx Countersunk Screws (GB/T2673-2000 / ISO 14581) — Steel (4.8) — Bright Zinc Plated
Material: Low Carbon Steel C1008  ·  Surface: Bright Zinc Cr3 (RoHS / ELV Compliant)  ·  Grade: Class 4.8  ·  Size: M2–M10

Selection Guide

Series	Material	Surface	Grade	Best For
A2 Stainless Steel	SUS 304	Passivated	A2-70	General corrosion resistance, food & medical, indoor/outdoor
A4 Marine Stainless Steel	SUS 316	Passivated	A4-70	Marine, coastal, chemical, chloride-rich environments
Alloy Steel 10.9 Black	10B21 Alloy Steel	Black Oxide	Class 10.9	High-strength machinery, automotive, tooling, dry/indoor
Alloy Steel 10.9 Zinc Cr3	10B21 Alloy Steel	Zinc Cr3	Class 10.9	High-strength + corrosion protection, automotive, RoHS compliant
Steel 4.8 Bright Zinc	C1008 Low Carbon Steel	Bright Zinc Cr3	Class 4.8	General purpose, furniture, electronics, light structural

Standard Overview

• GB/T 2673-2000 — Chinese national standard for Torx countersunk head screws; technically equivalent to ISO 14581:2011
• ISO 14581 — International standard specifying dimensions, tolerances, and drive recess for Torx countersunk screws
• Head angle: 90° (±1°)  ·  Drive: Torx (TX) per ISO 10664  ·  Thread: Metric coarse, tolerance 6g
• Size range covered: M2 – M12  ·  Length range: 3 mm – 100 mm

Why FULLERKREG

🏭 Factory Direct — Manufactured in-house with full process control, no middlemen.
📐 Standard Compliant — Strictly per GB/T 2673-2000 / ISO 14581; third-party inspection available.
🔬 Material Certified — Mill certificates (MTC) provided for all grades and materials.
📦 Bulk Ready — Wholesale quantities from 100 pcs to millions; competitive tiered pricing.
🌍 Global Shipping — Export experience to 30+ countries; DDP / FOB / EXW terms available.
🔧 Technical Support — Engineering team available for selection guidance, drawings, and custom specs.