​

Torque Wrench Calibration Services in the San Francisco Bay Area

Valley Calibration Services provides precision torque wrench and driver calibration from our ISO/IEC 17025‑accredited laboratory in Union City, CA. Trusted by aerospace, medical‑device, biotech, and advanced‑manufacturing firms across the Bay Area, we deliver rapid turnaround, rigorous uncertainty analysis, and certificates that stand up to the toughest audits.

Why Accurate Torque Matters

• Product Quality & Safety – Proper torque ensures fastener integrity, preventing leaks, fatigue failures, and warranty claims.

• Regulatory Compliance – FDA, FAA, ISO 13485, AS9100, and GMP guidelines all require documented torque control.

• Audit Readiness – Routine, accredited calibration demonstrates due diligence and reduces non‑conformities.

Capabilities at a Glance

ParameterRangeUncertainty (k = 2)Method / Standard

Click & Beam Wrenches0.2 N·m – 2,000 N·m (0.1 lbf·in – 1,475 lbf·ft)≤ 0.5 % of readingISO 6789‑1:2017, Method A

Dial & Indicating Wrenches0.2 N·m – 1,100 N·m≤ 0.3 % of readingISO 6789‑1:2017, Method B

Torque Screwdrivers5 cN·m – 6 N·m≤ 0.4 % of readingISO 6789‑1:2017

Digital Torque Testers (verification)Up to 2,500 N·m≤ 0.25 % of full scaleISO 17025 internal SOP‑TW‑03

All measurements are traceable to the International System of Units (SI) through NIST.

Our Accreditation & Standards​

• Procedures conform to ISO 6789‑1:2017 & ISO 6789‑2:2017

• Equipment verified daily with dead‑weight torque transducers and controlled environmental conditions (20 ± 2 °C)

• Comprehensive measurement uncertainty budgets maintained and available upon request

Step‑by‑Step Calibration Process

1. Intake & Inspection – Visual check, serial capture, functional test.

2. Environmental Stabilization – Minimum 2 h at 20 °C ± 1 °C, 40 – 50 % RH.

3. Pre‑Adjustment Verification – Up to 12 points across range; data logged.

4. Adjustment & Repair – OEM‑specified techniques; replacement parts stocked.

5. Final Verification – Repeatability, direction, and angle (if applicable).

6. Certificate Generation – Includes as‑found/as‑left data, uncertainty, traceability tree, technician signature.

7. Label & Seal – Calibration sticker with due date and unique asset ID.

Service Options

ServiceDescriptionTypical Turnaround

In‑Lab StandardShip or drop‑off at Union City lab3 – 5 business days

Express (24 h)Priority processing, weekend available1 day

On‑Site CalibrationMobile trailer services SF, Oakland, San Jose corridorsSame day

Pick‑Up & DeliveryDoor‑to‑door by VCS driver1 – 3 days

Flexible annual or semi‑annual calibration programs with automated reminders keep you compliant without paperwork headaches.

Industries We Serve

• Aerospace & Defense

• Medical Devices & Biotech

• Semiconductor Manufacturing

• Automotive R&D and Motorsports

• Renewable Energy & Battery Gigafactories

What You Receive

• PDF certificate with digital signature

• As‑found / As‑left data & uncertainty budget

• Calibration label and tamper‑evident seal

• Asset history stored in our secure portal (24/7 access)

• Free technical support on torque application best practices

Ready for a Quote?

Speak with a calibration specialist today:

Valley Calibration Services
1780 Whipple Road, Suite 204
Union City, CA 94587

📞 (510) 361-0195 | ✉️ sales@valleycalibration.com

Or submit your tools online using our Quick‑Quote Form — most quotes returned within one hour during business hours (Mon‑Fri, 8 am – 5 pm PT).

Keep Your Fasteners Firmly in Spec — Trust Valley Calibration Services for precision torque wrench calibration across the San Francisco Bay Area.