Screws
Sheet Metal Screws Manufacturer, Wholesaler, Supplier & Exporter
Sheet metal screws form their own mating thread in thin-gauge metal, making them a fast, reliable fastening choice across HVAC, automotive, and general fabrication. We manufacture and export a full range of head styles and drive types.
Sheet metal screws overlap heavily with self-tapping screws in the catalog sense, but buyers sourcing at volume for HVAC or automotive trim work tend to specify by head style and drive type first, material gauge second — because on a production line, a driver bit change costs more time than most people expect, and standardizing drive type across an entire assembly reduces tooling changeovers.
Case hardening depth is an easy thing to overlook on a spec sheet, but it's what actually determines how many drive cycles a screw survives before the driver bit starts camming out — thin case hardening on a low-cost import screw can look identical to a properly hardened one right up until it's driven.
Minimum Order — Container Quantity (Approx.)
A standard 20ft container (~20 tons) typically holds several million pieces of sheet metal screws in common sizes. Exact quantity depends on length and gauge and is confirmed at quote time.
You don't need a full container to order. Hurain Engitech & Trade — the group Global Fasteners Exports operates under — regularly ships smaller, partial-container (LCL) orders of just a few pallets or boxes for buyers who don't yet need FCL volume, consolidated with other cargo to keep freight cost reasonable.
Specifications
Standards
DIN 7981, DIN 7982, DIN 7983, ISO 1481, ISO 7049.
Head styles
Pan, countersunk, hex washer, and truss head.
Size range
No. 4 to No. 14, lengths 6mm to 50mm.
Finish
Zinc plated, black phosphate, or stainless steel.
Applications
HVAC & ductwork
Sheet metal duct and enclosure assembly.
Automotive body & trim
Panel and trim fastening in thin-gauge steel and aluminum.
Electrical enclosures
Panel and cover fastening.
General fabrication
Light-gauge steel framing and cladding.
Materials Available
Steel
Corrosion-resistant
Hardness and thread-forming torque tested on sample batches for consistent field driving performance.
How We Manufacture & Export This Product
- 1
Spec confirmation
Confirm head style, drive type, and length.
- 2
Forming & hardening
Cold heading, thread rolling, and case hardening.
- 3
Finishing
Zinc or phosphate coating, or stainless finishing.
- 4
Export packing
Bulk boxes palletized for container loading.
Export Track Record
Supplied in bulk to HVAC contractors and sheet metal fabricators on export orders.
Real-World Use Cases
HVAC and enclosure assembly
Fast fastening of sheet metal ducting, cabinets, and enclosures.
Automotive trim and panel work
Thin-gauge steel and aluminum panel fastening in body and trim assembly.
Electrical panel covers
Zinc-plated or stainless screws for panel and cover fastening.
Common Mistakes Buyers Make
Standardizing on the wrong drive type for the assembly line
Switching drive types mid-line costs more in tooling changeovers than most buyers budget for — decide drive type before ordering at volume.
Assuming all case-hardened screws perform the same
Case hardening depth varies by manufacturer and isn't visible on inspection — inconsistent hardening shows up as camming out or thread stripping in the field.
Using standard screws on thicker gauge metal
Beyond roughly 3mm, a self-drilling (Tek) screw is usually needed instead of a standard self-tapping sheet metal screw.
Glossary of Terms
- Case hardening
- A heat treatment that hardens only the outer surface of a screw, giving a tough drive/thread-forming surface over a more ductile core.
- Hex washer head
- A screw head combining a hex drive with an integrated washer face for wide load distribution and easy driver engagement.
- Gauge
- A measure of sheet metal thickness — thicker gauges (lower gauge numbers) often require self-drilling rather than self-tapping screws.
Quality Inspection We Perform
Dimensional inspection
Thread gauge, length, diameter, and head/drive geometry checked against the specified standard.
Material verification
Grade and material composition confirmed against the order specification, with mill test certificates on request.
Mechanical testing
Tensile strength, hardness, and proof-load testing on sample batches, particularly for structural and high-tensile grades.
Finish & coating check
Plating thickness, galvanizing coverage, or passivation quality inspected before packing.
HS Code & Customs Classification
Most fasteners fall under HS Chapter 73 (articles of iron or steel) or Chapter 74/76 for brass and aluminum items — the exact 8-10 digit subheading depends on the specific product and material. We include the HS code on the commercial invoice; confirm the applicable import duty with your customs broker, since rates vary by country and trade agreement.
Packaging & Export Labeling
Export packing is chosen to survive ocean freight and container loading without corrosion or damage: corrosion-protected paper or oil coating where needed, then cartons, drums, or bulk bags, palletized or crated for the container. We can match specific labeling, barcoding, or carton-marking requirements for OEM and repeat buyers.
Countries We Export Sheet Metal Screws To
View all markets →Buying guide
How to Choose a Reliable Sheet Metal Screws Manufacturer, Wholesaler, Supplier & ExporterWhy case-hardening depth and drive-type consistency matter more than they appear to for HVAC and automotive trim buyers ordering at volume.
Frequently Asked Questions
Related Products
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