China Hardware SourcingFasteners & Industrial Hardware

Knowledge base

Fastener Sourcing Guide from China

This page helps overseas buyers choose the right fastener sourcing guide before preparing a manual RFQ, checking standards, comparing finishes, or planning mixed orders from China.

Which Guide Should Buyers Read First?

Use this quick table to select the right guide before sending product lists for manual RFQ review.

Buyer taskRecommended pageWhat to prepare
Mixed container planningMixed 20ft container guideSKU list, weight, carton and pallet data
RFQ preparationRFQ and QC documents guideStandard, size, grade, finish, quantity, documents
Technical matchingDIN/ISO and finish guidesDrawing, BOM, sample or buyer specification

Core Buyer Preparation Guides

Start with these three pages when preparing mixed fastener orders, supplier checks, and RFQ documents for manual review.

Mixed 20ft Container Fastener Order GuidePlan payload, SKU weight, carton data, pallet data, CBM, and loading review.Chinese Fastener Supplier Evaluation ChecklistCheck supplier documents, traceability, audit points, packing control, and export evidence.Fastener RFQ and QC Documents GuidePrepare RFQ data, QC documents, lot traceability, thread checks, and packing inspection.

Container & Order Planning

Mixed 20ft Container Fastener Order GuidePlan mixed bolt, nut, washer, rod, and related fastener shipments by payload, CBM, carton data, pallet data, and forwarder limits.MOQ, Trial Order and Mixed Size Buying GuideUnderstand MOQ variables, sample steps, trial orders, LCL or pilot 20GP shipments, and long-term purchasing program setup.

Supplier & Quality Verification

Chinese Fastener Supplier Evaluation ChecklistReview factory capability, documents, traceability, export evidence, audit points, and red flags before supplier approval.Fastener RFQ and QC Documents GuidePrepare RFQ specifications and document requests for MTC/MTR, inspection reports, thread checks, coating reports, and packing review.

Standards & Technical Matching

DIN / ISO Fastener Standards ComparisonCompare DIN 933, ISO 4017, DIN 931, and ISO 4014 before confirming full-thread or partial-thread bolt requirements. DIN, ISO, ASTM, SAE, ASME Standards ComparisonCompare fastener standard families including dimensional differences, thread systems, mechanical grades, and application notes for international sourcing.Surface Treatment Comparison for FastenersCompare zinc plating, HDG, zinc flake coating, and stainless steel with corrosion, cost, fit, and document considerations.Metric and Inch Fastener Conversion GuideReference conversion between metric and inch fasteners, thread pitch and TPI, fractional inch table, and RFQ preparation notes.Bolt Grades and Property Classes GuideCompare metric bolt property classes, SAE grades, and ASTM fastener grades with grade markings, bolt-nut matching, and RFQ preparation.

Sourcing Guide FAQ

Use these short answers before selecting the detailed page you need.

How should buyers use this sourcing guide?

Start with order planning, then verify supplier and QC documents, then confirm standards and finishes before RFQ follow-up.

Does the guide replace buyer engineering review?

No. Final requirements should be confirmed by the buyer's engineering, quality, purchasing, or project team.

Can buyers send mixed fastener lists?

Yes. Mixed lists can be reviewed manually when product details, quantities, packing requirements, and documents are provided.

Are public prices shown in the guide?

No. Requirements vary by specification, finish, quantity, packaging, and documents, so RFQs are reviewed manually.

What documents are useful before supplier approval?

ISO 9001 where relevant, business license, MTC/MTR samples, inspection report examples, and export documents are useful.

What should buyers confirm before placing production?

Confirm product standard, size, grade, material, finish, packing, inspection documents, and shipment constraints.

Product Category References

Use these product category pages together with sourcing guides when preparing RFQs.

BoltsReview bolt types, standards, grades, finishes, and matching parts.NutsReview nut classes, thread fit, coating match, and RFQ details.WashersReview washer dimensions, hardness, finish, and bulk packing weight.AnchorsReview anchor type, material, finish, embedment, and installation notes.

Send RFQ for Manual Review

Share product lists, drawings, photos, samples, material directions, finish directions, quantities, and packaging requirements.

Send RFQ

Manual RFQ Review

We review RFQs manually. Public prices and automated transaction flow are not used on this website.