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Grade 2 Titanium Shoulder Bolts

Grade 2 Titanium Shoulder Bolts

Grade 2 Titanium Shoulder Bolts with precision unthreaded shoulders and short threaded ends for corrosion-resistant pivots, guides and locating assemblies. Shoulder tolerance, length, thread and inspection follow the approved drawing.

Material
Grade 2 / UNS R50400
Form
Socket-head precision shoulder bolt
Critical Features
Shoulder diameter, length and runout
Documents
MTC and dimensional inspection report
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Product Detail

Product Introduction

Grade 2 Titanium Shoulder Bolts combine a precision cylindrical shoulder with a smaller threaded end. The shoulder may function as a bearing surface, pivot, guide or spacer, so diameter tolerance, surface finish, shoulder length, straightness, runout, head-to-shoulder transition and thread engagement must be controlled as a complete drawing-defined component.

Product Specifications

ProductGrade 2 Titanium Shoulder BoltsMaterialTitanium 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

  • Shoulder fit: Define shoulder diameter, tolerance class, surface finish and mating bore or bearing clearance.
  • Length and transition: Control usable shoulder length, head fillet, thread relief and any undercut so mating parts seat without interference.
  • Thread and loading: Specify thread, engagement, tightening method, shear and bending duty, mating material, lubrication and galling controls.
Standards and ordering definition: ISO 7379, ASME B18.3 or a customer drawing may be reviewed for shoulder-screw geometry when expressly invoked. These references do not automatically define Grade 2 or Grade 5 titanium material condition, mechanical acceptance, precision tolerance or finished-part testing.

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 Shoulder Bolts 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

What dimension is most important on a shoulder bolt?

The shoulder diameter, tolerance, usable shoulder length and relationship to the mating bore are usually critical. Runout, surface finish and the head fillet can also control fit and motion.

Can ISO 7379 dimensions be ordered directly in titanium?

The geometry can be reviewed, but the order must separately define titanium grade, condition, tolerances, mechanical acceptance, finish and inspection. Direct substitution from a steel part should not be assumed.

Is the threaded end intended to carry shear?

The joint should normally be designed so the precision shoulder carries the intended transverse load. Actual load paths, bending, engagement and safety factors require engineering review.

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