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M11x99mm 304 Stainless Steel Hex Head Cap Screw | Fasteners

Expert Overview

This M11x99mm Hex Head Cap Screw, crafted from premium 304 Stainless Steel, offers superior strength and corrosion resistance for critical industrial applications. Engineered for reliable and secure fastening in demanding environments.

StandardASME B18
Material304 Stainless Steel
FinishPassivated
GradeN/A
SizeM11
Length99mm
Head Width26mm

Detailed Engineering Specifications

A high-performance industrial component, this M11x99mm Hex Head Cap Screw is manufactured from robust 304 stainless steel, renowned for its excellent corrosion resistance and moderate tensile strength, making it ideal for environments exposed to moisture and various chemicals. The M11 metric thread size ensures compatibility with standard M11 nuts and tapped holes. Its substantial 99mm length provides ample grip for thicker material assemblies, while the precisely machined 26mm hex head width allows for secure engagement with standard hex wrenches or sockets, facilitating high torque application for robust connections. Ideal for structural assemblies, machinery, and outdoor equipment where durability 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:Yes

Installation Procedure

1. Clean mating surfaces and threads to remove any debris or contaminants. 2. Insert the cap screw through the aligned holes of the components to be joined. 3. Tighten the cap screw using an appropriately sized hex wrench or socket, applying torque according to design specifications to achieve a secure fastening without over-tightening.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASME B18

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°C)
Thermal Expansion
Typical for Material Class

Recommended Torque Values

Bolt SizeDry Torque (ft-lbs)Lubricated Torque (ft-lbs)
M11Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M11Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong size wrench, leading to cam-out and potential damage to the hex head.Always use a wrench or socket that precisely fits the 26mm hex head to ensure proper torque transfer and prevent damage.
Over-tightening the screw, which can strip threads or compromise the structural integrity of the components being joined.Adhere to the recommended torque specifications for the application. If unsure, consult engineering drawings or a torque chart.
Not ensuring proper thread engagement, leading to a weak or failed joint.Ensure the screw is threaded straight and fully engaged with the mating thread before applying significant torque.

Common Applications

  • Machinery and Equipment Manufacturing
  • Structural Steel Assemblies
  • Marine and Outdoor Applications

⚠️ Engineering Warnings

  • Ensure compatibility of mating threads (M11) and torque specifications.
  • Avoid exposing to highly corrosive or acidic environments beyond the capabilities of 304 stainless steel without further protective measures.

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, 304 Stainless Steel made from?

A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Machinery and Equipment Manufacturing, Structural Steel Assemblies, Marine and Outdoor Applications.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 99mmAF26mm1/2"-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.