Help Center
Answers for engineers and buyers
Clear guidance on grades, sizing, shipping, and quality—so you can specify stainless fasteners with confidence.
Material grades
When to choose 304 vs 316 (A2 vs A4), passivation, and magnetic response of austenitic stainless.
Thread & sizing
Metric and UNC/UNF charts, length measurement, and head style selection for hex bolts and machine screws.
Orders & shipping
Lead times, export packing, Incoterms overview, and how to request a volume quote.
Returns & quality
Inspection criteria, mill certificates, and how to open a quality claim within 14 days of delivery.
Material grades at a glance
| Grade | Also called | Best for |
|---|---|---|
| 304 | A2 | General industrial, indoor, mild outdoor |
| 316 | A4 | Marine, chloride exposure, food processing |
Thread & sizing tips
Measure bolt length under the head for hex cap screws (unless otherwise noted). Confirm pitch before ordering fine-thread UNC/UNF or metric fine series. When substituting, match tensile class and corrosion resistance—not only diameter.
Orders & shipping
In-stock lines typically dispatch within 1–3 business days. Export cartons are labeled by SKU and grade. For FOB / CIF quotes, contact sales with port of destination and preferred Incoterm.
Returns & quality
Photograph packaging and product upon receipt if anything looks damaged. Unused stock in original packaging may be returned within 14 days subject to restocking policy. Quality claims require lot codes from the packing list.
FAQ
Do you supply mill test certificates?
Yes. Standard EN 10204 3.1 documentation is available on request for stocked lots. Specify certificate needs at checkout or in your quote request.
Can I mix sizes in one order?
Absolutely. Cart and quote workflows support mixed diameters and lengths. For palletized export, we may recommend consolidating by grade.
What finishes are available?
Most catalog items ship plain stainless. Passivated and limited PTFE-coated options appear as product variations where stocked.
How do I get a distributor price list?
Email sales with your company details and target monthly volume. We respond within one business day for most regions.
Still need a human?
Our sales engineers answer specification questions in English for international buyers.
Contact us