Validate Long-Term Load Performance Accredited Results at Production Speed with Fastener Durability Testing
Fastener Stress Durability Testing subjects fasteners to sustained load and controlled conditions to confirm they won’t relax, creep, or crack over time in service. AADFW delivers precision-driven, ISO/IEC 17025–accredited testing with the faster turnaround engineers need to keep qualification and lot release on schedule.
Request a Quote Talk to a Testing Specialist : 817-540-0153
Why Fastener Stress Durability Testing Matters
In flight-critical structures and high-pressure joints, fasteners experience long dwell times under preload, thermal cycles, and corrosive environments. Insufficient stress durability can lead to loss of clamp load, under-head fillet cracking, thread root failures, or time-dependent relaxation, compromising fatigue life, leak-tightness, and safety. Stress durability testing verifies design allowables, property class, heat-treat condition, and coating/lubricant effects against program requirements and industry standards (e.g., NASM/ASTM/ISO), enabling confident MRB dispositions and supplier approval.
AADFW’s Approach: Precision, Speed, and Proof
- Accredited & precise: Executed within an ISO/IEC 17025 quality system using calibrated frames/load cells, temperature-controlled fixtures, and documented uncertainty.
- Faster results: Purpose-built fixturing, streamlined intake, and right-sized reporting compress lead times without sacrificing rigor.
- Trusted by industry: Aerospace and oil & gas teams rely on our traceable setup photos, acceptance callouts, and metallurgical context that stand up to audits and primes.
Stress Durability Testing Capabilities
- Hardware Types
Bolts, screws, studs, pins, collars/nuts, lockbolts, Hi-Loks®, and specialty aerospace fasteners.
- Load & Time Profiles
Constant tensile or combined preload protocols per drawing or method; hold times from hours to multi-day exposures; optional cyclic dwell segments as specified.
- Temperature & Environment
Ambient to elevated-temperature conditioning (oven or chamber); optional humidity or post-exposure corrosion screens to assess clamp-load retention effects.
- Setups & Instrumentation
Precision grip/anvil stacks for diameter and head style; alignment control to minimize bending; displacement and load monitoring to capture relaxation/creep.
- Measurements & Acceptance
Initial applied load or torque-tension, residual clamp load after dwell, break/rupture time (if applicable), failure mode (fillet, shank, thread, bearing), and visual/NDT evidence of cracks or fractures.
- Related Verifications (as needed)
- Torque–Tension (ISO 16047) to correlate lubricant/coating with achieved preload.
- Prevailing Torque (ISO 2320) for all-metal and insert-lock nuts before/after durability.
- Hardness & Microstructure (ASTM E18/E384) for heat-treat confirmation; decarburization (ASTM E1077) at thread roots.
- Dye Penetrant (PT) to screen for surface cracks at heads/fillets; metallography to confirm failure mechanisms and MAG particle inspection.
- Chemistry (OES, C/S, O/N/H) to assess embrittlement risk or grade conformity.
- Documentation & Deliverables
Test matrix, setup photos, calibration references, real-time load/temperature traces, acceptance tables with go/no-go conclusions, and appendix micrographs as applicable—audit-ready.
Industries We Support
- Aerospace: Airframe joints, control-surface hinges, landing-gear attachments, and engine-adjacent hardware requiring long-term clamp-load reliability under OEM/FAA expectations.
- Oil & Gas: Pressure-boundary bolting for valves, wellheads, and subsea assemblies where temperature and dwell drive relaxation and leak risk.
- Defense & Advanced Manufacturing: Mission-critical mechanisms and tooling where preload retention and documented durability are non-negotiable.
Trusted by engineers and QC managers across mission-critical industries.
Accreditations & Standards Compliance
AADFW operates to ISO/IEC 17025 with traceable calibrations and uncertainty statements. We execute to customer drawings and specifications and support commonly referenced practices, including:
- NASM 1312 series (stress-related fastener tests, e.g., Stress Durability procedures when specified)
- ASTM F606/F606M (mechanical testing of fasteners)
- Applicable ASME/AMS/IFI and OEM methods upon request
Why Engineers Choose AADFW
- Accredited & audit-ready procedures with complete chains of custody and calibration data.
- Faster turnaround—dedicated fixtures, disciplined scheduling, proactive status updates.
- Trusted partner to aerospace and oil & gas QA organizations.
- Expert metallurgists who translate traces and indications into clear go/no-go decisions and actionable corrective guidance.
Request a Quote for Stress Durability Testing
Verify long-term clamp-load performance with confidence and speed. Request a Quote or Talk to a Testing Specialist : 817-540-0153 to schedule Stress Durability testing for your fasteners today.
