Flat Head (Countersunk) Machine Screws are designed with a conical head that sits completely flush with the mating surface, providing a clean, smooth, and low-profile finish. When manufactured in Stainless Steel 304 (A2) and Stainless Steel 316 (A4), these screws offer excellent corrosion resistance combined with reliable mechanical strength, making them ideal for precision assemblies and demanding environments.
As an experienced industrial fastener manufacturer, JLHY supplies SS 304 / SS 316 flat head machine screws in metric and inch sizes, produced according to ISO, DIN, and ANSI standards. Our products are widely used by OEMs, distributors, and industrial buyers worldwide.
Flush mounting design for smooth, professional appearance
Excellent corrosion resistance in SS 304 / 316
High dimensional accuracy for precision assemblies
Strong and reliable fastening in metal-to-metal connections
Low maintenance and long service life
| JLHY Advantage | Value for B2B Buyers |
|---|---|
| Factory-Direct Manufacturing | Competitive pricing, stable quality, and controlled lead time |
| SS 304 / 316 Expertise | Correct material selection for corrosion-critical applications |
| Full Standards Coverage | ISO / DIN / ANSI compliant production |
| OEM & Custom Support | Custom sizes, special lengths, drives, and packaging |
| Strict Quality Control | Material inspection, in-process checks, final inspection |
| Export-Ready Supply | Professional packaging and global shipping experience |
Looking for a reliable SS 304 / SS 316 flat head machine screw manufacturer for bulk supply or OEM projects?
JLHY provides stable quality, technical support, and competitive factory pricing.
📩 Contact us today for quotations, samples, or technical drawings.
Stainless steel flat head machine screws are widely used in:
Industrial machinery & equipment
Automation and robotics systems
Electrical enclosures and panels
Automotive and transportation components
Marine equipment and outdoor installations
Furniture hardware and architectural fittings
SS 316 flat head screws are especially suitable for coastal, chemical, and high-humidity environments.
Bulk carton or pallet packing
Small box packing for distributors
OEM labeling and private branding
Flexible MOQ for long-term cooperation
| Specification Category | Details |
|---|---|
| Product Name | Flat Head (Countersunk) Machine Screws |
| Head Type | Flat / Countersunk (Flush installation) |
| Drive Types | Hex Socket (Allen), Phillips, Slotted (optional) |
| Standards | DIN 7991, ISO 10642, ANSI / ASME B18.3 |
| Thread Type | Metric Coarse / Fine, Unified UNC / UNF |
| Size Range (Metric) | M2 – M12 |
| Size Range (Inch) | #4 – 1/2″ |
| Length Range | 4 mm – 100 mm (custom available) |
| Material Options | Stainless Steel 304 (A2), Stainless Steel 316 (A4) |
| Tensile Grade | A2-70 / A4-70 (standard), higher grades on request |
| Surface Finish | Plain stainless, passivated |
| Corrosion Resistance | Moderate (304), High (316 – marine/chemical grade) |
| Installation Type | Countersunk flush mount in pre-tapped hole |
| Applications | Machinery, electronics, automotive, marine, enclosures |
| Tolerance Standard | ISO metric tolerance system |
| Customization | Size, thread, length, drive type, packaging available |
| MOQ | Flexible (bulk & OEM support) |
