Flat Head Hexagonal Socket Screw Supplier
Carbon Steel Flat Head Hexagonal Socket Screw. Flat/oval countersunk head, hex socket. Size range M3–M16. Factory direct pricing with ISO 9001 certification.

Quick Specifications
Material
Carbon Steel
Type
Flat/oval countersunk head, hex socket
Size Range
M3–M16
Surface Finish
Black oxide / Zinc-plated
Grade
8.8 / 10.9
Product Overview
Flat Head Hexagonal Socket Screw is a high-quality fastener manufactured from Carbon Steel. Flat/oval countersunk head, hex socket. Designed for industrial applications requiring reliable performance and durability.
Available in size range M3–M16, with surface finish options including Black oxide / Zinc-plated. Meets international standards 8.8 / 10.9.
All products are manufactured under strict quality control and ISO 9001 certification, ensuring consistent quality and reliability.

Dimensional Specifications
Flat Head Hexagonal Socket Screw – Metric Thread Sizes
| Thread Size | Pitch (mm) | Width (mm) | Height (mm) |
|---|---|---|---|
| M3 | 11 | 17 | 7 |
| M16 | 5 | 22 | 11 |
Applications
Construction
Steel structures, bridges, buildings, concrete anchors
Machinery
Heavy equipment, industrial machines, manufacturing
Infrastructure
Railways, towers, pipelines, power transmission
Automotive
Vehicle assembly, chassis, engine components
Quality Assurance
ISO 9001 Certified
Strict quality management system
Material Certificates
EN 10204 3.1 certificates available
100% Inspection
Dimensional and visual inspection
Professional Packaging
Carton (bag)
Need Flat Head Hexagonal Socket Screw?
Factory direct pricing, MOQ from 1 piece, fast delivery worldwide.