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M5 x 129mm Titanium Grade 5 Hex Cap Screw | High Strength

Expert Overview

This M5 x 129mm Hex Head Cap Screw is manufactured from high-performance Titanium Grade 5, offering superior strength-to-weight ratio and exceptional corrosion resistance. Ideal for critical aerospace, medical, and industrial applications requiring ultimate reliability.

StandardASTM A106
MaterialTitanium Grade 5
FinishPassivated
GradeN/A
SizeM5
Length129mm
Head Width23mm

Detailed Engineering Specifications

Engineered for reliability and performance, this M5 x 129mm Hex Head Cap Screw is crafted from Titanium Grade 5 (Ti-6Al-4V), a leading alloy renowned for its excellent tensile strength (up to 950 MPa), fatigue resistance, and biocompatibility. The robust hex head design, with a nominal width of 23mm, allows for secure and controlled torque application using standard hex drivers. Its precise M5 thread pitch ensures positive engagement with compatible fasteners, providing a secure and durable joint. This material combination makes it ideal for environments prone to corrosion, high stress, and extreme temperatures, ensuring long-term structural integrity in demanding applications.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

BossardEst. 1831
Switzerland🇨🇭
"Global leader in fastening technology."
Market Rank
🏆 Top 3 Global Fastener Network
Industry Approvals
🚀 Aerospace & Tesla Approved
Warranty & Support
🛡️ Lifetime Traceability
Green Manufacturing
🌱 Carbon Neutral by 2030
Certified:ISO 9001, RoHS, REACH
Würth GroupEst. 1945
Germany🇩🇪
"Premium assembly and fastening materials."
Market Rank
🏆 #1 Global Assembly Supplier
Industry Approvals
🚀 VW & BMW OEM
Warranty & Support
🛡️ 5-Year Industrial Warranty
Green Manufacturing
🌱 100% Recyclable Packaging
Certified:ISO 9001, DIN EN
Brighton-BestEst. 1925
USA🇺🇸
"Master distributor of industrial fasteners."
Market Rank
🏆 Largest Distributor in NA
Industry Approvals
🚀 Boeing Approved
Warranty & Support
🛡️ Global Replacement Guarantee
Green Manufacturing
🌱 Green Steel Initiative
Certified:ISO 9001, A2LA

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:N/A

Installation Procedure

1. Ensure mating threads are clean and free of debris. 2. Hand-thread the screw to confirm alignment and prevent cross-threading. 3. Utilize a calibrated torque wrench to tighten to the manufacturer's specified torque value for the application, ensuring proper preload and joint integrity.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASTM A106

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Recommended Torque Values

Bolt SizeDry Torque (ft-lbs)Lubricated Torque (ft-lbs)
M5Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M5Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-torquing, which can strip threads or weaken the fastener.Always use a calibrated torque wrench and consult application-specific torque charts.
Using a driver size that does not perfectly match the hex head, leading to cam-out and potential damage.Select the correct size hex driver for a snug and secure fit.
Improper thread engagement, such as cross-threading, which can lead to fastener failure.Carefully align the screw with the mating threads and hand-tighten initially to verify proper engagement.

Common Applications

  • Aerospace structural components
  • Medical implants and surgical instruments
  • High-performance automotive and marine systems
  • Chemical processing equipment
  • Corrosion-resistant industrial machinery

⚠️ Engineering Warnings

  • Titanium Grade 5 is susceptible to galling; use anti-seize compound for threaded connections where appropriate, especially in dissimilar metal applications.
  • Always consult material compatibility charts and torque specifications for your specific application to ensure optimal performance and safety.

Alternative Products to Consider

Premium Fastening & Joining equivalentHigher corrosion resistance (316 SS)
Economy Fastening & Joining optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Hex Head Cap Screw, Titanium Grade 5 made from?

A: This Hex Head Cap Screw, Titanium Grade 5 is manufactured from Titanium Grade 5.

Q: What are the main applications?

A: Aerospace structural components, Medical implants and surgical instruments, High-performance automotive and marine systems, Chemical processing equipment, Corrosion-resistant industrial machinery.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 129mmAF23mm1/2"-13TIGHTEN →MECHANICAL PROPERTIESTensile Strength: 150,000 psiThread: 1/2"-13 UNCTorque Direction: Clockwise (CW)Head Marking: 6 radial lines (Grade 8)

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.