Canceled Checked October 24, 2026
Canceled in 1995. Its successors, ANSI/NCSL Z540-1 and Z540.3, have since been withdrawn too; a modern flowdown names ISO/IEC 17025 or ISO 10012.
What It Covers
Requirements for a calibration system controlling the accuracy of measuring and test equipment, including traceability, intervals, records, and out-of-tolerance evaluation.
Who It Applies To
Only where an existing contract still invokes it.
Key Requirements
- Traceability of calibrations to national standards.
- Calibration intervals set and adjusted on evidence.
- Evaluation of product impact when equipment is found out of tolerance.
What an Auditor Asks to See
- How your calibration system meets the cited clause, mapped to ISO/IEC 17025 or ISO 10012.
Where Systems Fall Short
- Calibration suppliers chosen without checking their accreditation scope.
How QES Helps
Calibration system reviews, and flowdown language updated to current standards.
Related Standards
Sources. ASSIST Quick Search — Defense specifications and standards, status records (opens in a new tab). Status checked October 24, 2026. This page summarizes MIL-STD-45662A; it does not reproduce or replace it. Buy the standard from its publisher, or read the regulation in its official text, before relying on a detail. Not legal advice.