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M18x121mm Titanium Grade 5 Hex Cap Screw | Heavy Duty

Expert Overview

Engineered for extreme environments, this M18x121mm Hex Head Cap Screw utilizes high-strength Titanium Grade 5. Offering superior corrosion resistance and a lightweight profile, it's ideal for critical structural and mechanical assemblies.

StandardASTM A106
MaterialTitanium Grade 5
FinishPassivated
GradeN/A
SizeM18
Length121mm
Head Width34mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M18x121mm Hex Head Cap Screw is manufactured from Aerospace-grade Titanium Grade 5 (Ti-6Al-4V), renowned for its exceptional strength-to-weight ratio (approx. 130-150 ksi tensile strength) and outstanding corrosion resistance, even in aggressive chemical and marine settings. The M18 metric thread pitch ensures robust engagement. The 121mm length provides significant grip for thick materials, and the 34mm head width allows for substantial torque application with standard tooling. Ideal for aerospace, marine, chemical processing, and high-performance automotive applications where reliability and longevity are paramount.

🧊 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 threads on both the screw and the mating component are clean and free of debris. 2. Apply a suitable anti-seize compound if recommended for the specific application environment. 3. Thread the screw in by hand initially to verify alignment and prevent cross-threading. 4. Tighten to the specified torque value using a calibrated torque wrench, ensuring consistent application across multiple fasteners.

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)
M18Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M18Varies 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
Overtightening titanium fasteners can lead to thread stripping or material deformation.Always adhere to the manufacturer's recommended torque specifications and use a calibrated torque wrench.
Using incompatible tools or excessive force can damage the hex head or the screw threads.Utilize the correct size and type of wrench (e.g., a 6-point socket) and apply steady, controlled force.

Common Applications

  • Aerospace structural components
  • Marine and offshore equipment
  • Chemical processing plant machinery
  • High-performance vehicle chassis and suspension

⚠️ Engineering Warnings

  • Titanium Grade 5 can gall under high pressure and rotational forces if not properly lubricated or if threads are damaged.
  • Always verify torque specifications with the design engineer or relevant standards for critical applications.

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, Marine and offshore equipment, Chemical processing plant machinery, High-performance vehicle chassis and suspension.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 121mmAF34mm1/2"-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.