Fastener purchasing FAQ
Fastener Purchasing FAQ
This FAQ helps overseas buyers confirm common fastener sourcing questions before manual RFQ review, including mixed orders, standards, surface finishes, QC documents, MOQ, and trial orders.
FAQ Review Checklist
Before using the answers below, confirm these RFQ basics.
- Product standard, size, grade or material are visible.
- Finish and packing requirements are written clearly.
- Document requests are separated from optional references.
- Final selection follows drawings, BOM, samples, project specifications, or buyer requirements.
Common Buyer Questions
Each answer links to related sourcing guide pages where useful.
Why is a 20 ft / 20GP container of fasteners often weight-limited before it is volume-full?
Fasteners are dense. Buyers should plan by payload first and CBM second. See the mixed 20 ft / 20GP container guide.
What information should buyers prepare for a mixed fastener RFQ?
Prepare product name, standard, size, grade, material, finish, quantity, carton data, and documents. See the RFQ and QC documents guide.
What certificates should buyers request for Grade 8.8 bolts and class 8 nuts?
MTC/MTR, dimensional report, hardness or tensile records where applicable, thread gauge report, and packing inspection records may be useful.
How do buyers compare DIN 933, DIN 931, ISO 4017 and ISO 4014?
Check full-thread or partial-thread requirements, drawings, BOM, dimensions, and project acceptance. See the DIN and ISO comparison.
What is the difference between zinc plating, hot-dip galvanizing, zinc flake coating and stainless steel?
They differ in corrosion resistance, relative cost, thread fit risk, and verification documents. See the surface treatment comparison.
What QC documents should be requested before shipment?
Common documents include MTC/MTR, dimensional inspection, thread GO/NO-GO records, coating reports, salt spray reports if required, and packing checks.
How should buyers match bolts, nuts and washers?
Confirm standard, thread, grade or class, material, finish, washer hardness if relevant, and application requirements before production.
How do MOQs work for mixed fastener sizes from Chinese manufacturers?
MOQ may depend on size, family, finish, grade, coating batch, packaging, and shipment weight. See the MOQ and trial order guide.
Can a buyer start with samples or a trial order before a full container?
Yes. A conservative path is samples, small trial order, LCL or pilot 20GP, then long-term program.
Why are prices not displayed publicly?
Fastener pricing depends on specification, material, finish, quantity, packaging, documents, and shipment details, so RFQs are reviewed manually.
Should buyers choose a factory or exporter for mixed fastener orders?
A direct factory may fit higher-volume standard items. A transparent exporter may help coordinate mixed SKUs when documents and factory relationships are clear.
What should buyers verify before approving a supplier?
Check business license, ISO 9001 scope where relevant, sample reports, traceability, export documents, packing controls, and communication clarity.
Send RFQ for Manual Review
Share your purchase list, drawings, photos, samples, documents, quantities, and packing requirements.
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Manual RFQ Review
We review RFQs manually. Public prices and automated transaction flow are not used on this website.
Email: xyan060816@gmail.com