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High-Strength Fasteners

High Strength Fasteners for Construction and Steel Structure

High-strength fasteners for construction and steel structure projects, including Grade 8.8 bolts, Grade 10.9 bolts, Grade 12.9 bolts, structural bolts, high-strength anchor bolts, hardened washers and heavy hex nuts.

Send drawings, samples, basic size or material requirements for RFQ review.

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Product
High Strength Fasteners for Construction and Steel Structure
Made to
Drawing / specification / sample photo
Materials
Carbon Steel, Alloy Steel, Stainless Steel
Surface finish
Zinc Plating, Hot Dip Galvanizing, Black Oxide, Dacromet
Size
Diameter, length, thread length, grade and matched hardware confirmed by drawing or standard
Packing
Bulk cartons, pallets, marked bags, labels and project set packing
Application
Grade 8.8 bolts, Grade 10.9 bolts, Grade 12.9 bolts, Structural bolts
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High Strength Fasteners for Construction and Steel Structure made to drawings

Product Information

Material
Carbon Steel, Alloy Steel, Stainless Steel
Surface Treatment
Zinc Plating, Hot Dip Galvanizing, Black Oxide, Dacromet
Manufacturing Process
Cold Heading, Hot Forging, Thread Rolling, Heat Treatment, Surface Treatment, Inspection
Thickness
Fastener diameter and length confirmed by drawing or standard
Tolerance
DIN / ISO / ASTM / custom by drawing
Standard / Custom
Made to drawing / made to specification
Application
Grade 8.8 bolts, Grade 10.9 bolts, Grade 12.9 bolts, Structural bolts, High-strength anchor bolts, Hardened washers, Heavy hex nuts
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Specifications

Key dimensions: Dimensions are confirmed from drawings or samples, including length, hole spacing, thickness, bore size, pitch, and end geometry where applicable.Thickness: Fastener diameter and length confirmed by drawing or standardMaterial / surface: Carbon Steel, Alloy Steel, Stainless SteelTolerance control: DIN / ISO / ASTM / custom by drawingRecommended surface finish: Zinc Plating, Hot Dip Galvanizing, Black Oxide, DacrometStandard / custom: Made to drawing / made to specification

Model / Standard Reference

China standard reference: matched against GB / GB/T or customer drawings when relevantLocal replacement reference: substitute codes can be reviewed from customer drawings or samplesInternational reference: ISO / DIN / ASTM / ANSI mapping is confirmed during RFQ reviewSample stage: English specifications can include tolerance, material, bore, hole spacing, and assembly notes

Surface Finish Notes

Available finishes: Zinc Plating, Hot Dip Galvanizing, Black Oxide, DacrometRecommended matching: Carbon Steel / Alloy Steel / Stainless Steel; select corrosion resistance, strength requirement, wear resistance, and assembly fit by applicationOutdoor or humid use: prioritize corrosion-resistant finishesThreaded or fitted parts: confirm coating thickness and assembly clearanceVisible or handled parts: confirm appearance consistency, cleaning, and anti-rust packing

Technical parameters

High Strength Fasteners for Construction and Steel Structure Specifications

Use these parameters as the minimum RFQ basis before sending drawings or samples.
Product typeHigh Strength Fasteners for Construction and Steel Structure
MaterialCarbon Steel, Alloy Steel, Stainless Steel
Manufacturing routeCold Heading, Hot Forging, Thread Rolling, Heat Treatment, Surface Treatment, Inspection
Surface finishZinc Plating, Hot Dip Galvanizing, Black Oxide, Dacromet
ToleranceDIN / ISO / ASTM / custom by drawing
RFQ basisDrawing, sample, material, quantity, application, and packaging requirement

Typical Applications

Grade 8.8 boltsGrade 10.9 boltsGrade 12.9 boltsStructural boltsHigh-strength anchor boltsHardened washersHeavy hex nuts

Product Advantages

Grade and standard reviewMatched nuts and washersHeat treatment routeConstruction packing support

Size Capability

Small precision partsMedium-size production partsLarger custom parts reviewed by drawing, material, tooling and quantity

Available Secondary Operations

DeburringSurface treatmentHeat treatment when requiredInspectionPacking

Assembly & Packing Options

Nut and washer set packingProject labelsExport cartonsPallet packingAnti-rust protection

To quote accurately, please provide:

Standard or drawingGrade 8.8 / 10.9 / 12.9Diameter and lengthNut and washer setSurface finishCertificate requirementQuantityPacking

RFQ Next Step

Send the drawing, key dimensions, quantity, tolerance, finish, application, and packing requirement so we can review the quotation accurately.

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Used in these industries

ConstructionBrackets, plates, anchors, bolts, washers, and structural fixing components for building and installation systems.Industrial EquipmentAnchor hardware, mounting plates, stamped brackets, washers, fasteners, covers and assemblies for equipment installation and support frames.Cable Support & Cable ManagementApplication-specific brackets, connector plates, splice plates, clamps, rods, fastener sets, and stamped hardware components made to drawings for cable support programs.

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Related materials

Carbon SteelCost-effective strength for anchor bolts, plate washers, stamped brackets, mounting plates, and general construction hardware.Stainless SteelCorrosion resistance and stable strength for stainless bolts, nuts, washers, brackets, clamps, plates, and outdoor installation hardware.Alloy SteelHigh strength material option for fasteners and structural metal components.

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Related surface treatments

Zinc PlatingZinc Plating can be selected according to corrosion resistance, strength requirement, appearance, assembly fit, and customer standards.Hot Dip GalvanizingHot Dip Galvanizing can be selected according to corrosion resistance, strength requirement, appearance, assembly fit, and customer standards.DacrometDacromet can be selected according to corrosion resistance, strength requirement, appearance, assembly fit, and customer standards.Black OxideBlack Oxide can be selected according to corrosion resistance, strength requirement, appearance, assembly fit, and customer standards.

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Related manufacturing capabilities

Cold HeadingHigh-volume forming process for screws, bolts, rivets, pins, studs, and custom fasteners before threading and finishing.Thread RollingThread forming for screws, bolts, studs, threaded rods, and custom fasteners with repeatable profile and strength.Surface TreatmentPlating, coating, passivation, polishing, deburring, cleaning, and corrosion-control support.InspectionDimensional inspection, visual checks, gauges, PPAP-ready documentation support, and shipment verification.

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Related products

BoltsIndustrial bolts for structural joints, equipment frames, mounting hardware, and OEM assemblies, with support for custom dimensions, coatings, and project-based packaging.Anchor Bolts / Foundation BoltsAnchor bolts, foundation bolts, wedge anchors, sleeve anchors, drop-in anchors and custom anchoring parts for construction fixing and equipment bases.NutsThreaded nut solutions for repeat production assemblies, structural fastening, welded connections, and insert applications, with material and coating choices aligned to the project environment.Plate Washers / Square WashersPlate washers, square washers, slotted washers and custom stamped washers for anchor bolts, steel structure, base plates and installation hardware.

Engineering RFQ

Upload drawings or describe the part. We will review material, process, finish, tolerance, and production quantity.

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