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Grade 2 Titanium Cap Nuts

Grade 2 Titanium Cap Nuts

Grade 2 Titanium Cap Nuts with closed domed ends for corrosion-resistant protection of exposed bolt threads. Dome clearance, thread engagement, wrenching size and inspection follow the order.

Material
Grade 2 / UNS R50400
Form
Closed-end hex cap / acorn nut
Threads
Metric, UNC, UNF or drawing
Documents
MTC, dimensions and thread inspection
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Product Detail

Product Introduction

Grade 2 Titanium Cap Nuts provide a closed domed end over the mating bolt or stud, helping shield exposed threads and create a finished external profile. They are not automatically pressure-tight. Selection requires thread engagement, available dome depth, stud projection, wrenching clearance, seating face, installation torque and service environment.

Product Specifications

ProductGrade 2 Titanium Cap NutsMaterialTitanium Grade 2 / UNS R50400
Product FormStandard or drawing-specific titanium fastenerTypical Inquiry RangeMetric, inch and custom sizes confirmed at RFQ stage
Dimensional ReferencesExpressly invoked standard or approved drawingThreads / DimensionsMetric coarse or fine, UNC, UNF or drawing-specific as applicable
SurfaceMachined and cleaned; lubricant, anti-galling treatment or coating by agreementDocumentsMTC, heat/lot traceability and dimensional inspection report
InspectionDimensions, thread gauging, surface and agreed functional or mechanical testsSupply BasisApproved purchase order, invoked standard and drawing

Typical inquiry ranges are not a stock guarantee. Final manufacturability, tolerances and test requirements are confirmed against the complete RFQ.

Selection and Configuration

  • Dome clearance: Confirm internal dome depth against bolt or stud projection so the nut seats on the joint rather than bottoming internally.
  • Thread engagement: Define thread, class of fit and minimum usable engagement together with mating fastener material and condition.
  • Sealing expectation: State whether the cap is for protection and appearance only or whether a separate engineered sealing feature is required.
Standards and ordering definition: DIN 1587 or an approved drawing may define particular cap-nut geometry when expressly invoked. The purchase order must separately define titanium grade, condition, proof or mechanical requirements, thread acceptance, tests and documentation.

Send a drawing or complete fastener definition
Include dimensions, quantity, mating parts, service conditions, finish and inspection requirements.

Request a Quotation

Chemical Composition – Titanium Grade 2

Maximum weight percent unless shown otherwise; titanium is the balance.

N maxC maxH maxFe maxO maxResidual each / totalTi
0.030.080.0150.300.250.10 / 0.40Balance

Mechanical Properties – Grade 2 Material Reference

PropertyAnnealed Grade 2 Material Reference Minimum
Ultimate tensile strength345 MPa (50 ksi)
0.2% yield strength275 MPa (40 ksi)
Elongation20%

Material values do not automatically establish finished-fastener loadability. Finished-part acceptance depends on geometry, manufacturing route, condition and the expressly invoked fastener specification or drawing.

Typical Physical Properties

PropertyTypical Value
Density4.51 g/cm³
Elastic modulusApproximately 105 GPa
Poisson ratioApproximately 0.34
Thermal conductivityApproximately 16.4 W/m·K
Coefficient of thermal expansionApproximately 8.6 µm/m·K
Melting pointApproximately 1668°C

Physical values are typical engineering references and are not inspection acceptance limits.

Certificates & Inspection Records

SAKY ALLOY quality management system certificate

Services We Can Provide

Drawing ReviewGeometry, thread, tolerances and mating-component review.
Custom ManufacturingMetric, inch and drawing-specific production subject to review.
InspectionDimensional checks, thread gauging and agreed functional testing.
Surface OptionsCleaning, identification, lubricant or coating by agreement.
TraceabilityMTC, heat/lot records and inspection documentation.
Export SupportProtected packing, labeling and shipping documents.

Product Packaging

Grade 2 Titanium Cap Nuts are separated by size and lot, protected against thread and surface damage, and labeled with grade, dimensions, quantity and traceability reference. Inner bags, cartons and export cases are selected according to product geometry, quantity and shipping method.

Application Scenarios

Chemical processing equipment application environment

Chemical Processing

Corrosion-resistant equipment joints selected against the complete process environment.

Power and energy equipment application environment

Power & Energy

Lightweight engineered assemblies requiring controlled dimensions and traceability.

Marine and shipbuilding application environment

Marine & Shipbuilding

Corrosion-resistant joints subject to galvanic, preload and service-condition review.

FAQ

Are titanium cap nuts pressure-tight?

Not by default. The closed dome protects the thread end, but pressure or fluid sealing requires an expressly engineered sealing interface and validation.

Why is stud projection important?

An overlong stud can bottom inside the dome before the nut seats and develops the intended clamp load. Dome clearance must be checked.

Can a cap nut replace a standard hex nut?

Only after checking engagement, dome clearance, proof or mechanical requirements, seating area, wrenching space and joint inspection.

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