Mil-std-167-2a Pdf Link

MIL-STD-167-2A, officially titled "Vibration, Mechanical (Shipboard Equipment)," is a United States military standard that establishes the vibration testing requirements for equipment installed aboard naval surface ships and submarines. It is the second revision of the original MIL-STD-167, specifically focusing on the environmental vibration durability of shipboard machinery, components, and systems.

The standard is mandatory for shipbuilders and subcontractors who supply equipment to the U.S. Department of Defense (DoD) under Navy contracts. Adherence ensures that sensitive electronics, rotating machinery, and structural components will not fail prematurely due to propeller-induced vibration, machinery operation, or shock events.

The Defense Logistics Agency (DLA) maintains the official Acquisition Streamlining and Standardization Information System (ASSIST). mil-std-167-2a pdf

For a fee, these commercial resellers offer official, watermarked copies of the PDF. This option is best for formal quality management systems that require auditable document traceability.

Important Warning: Avoid random file-sharing sites claiming to offer a "free MIL-STD-167-2A PDF." Many contain outdated revisions, scanning errors, or malware. Always verify the revision letter (e.g., "A" or later) and the date of issue (revised in the 1990s, but still active). Department of Defense (DoD) under Navy contracts

False. MIL-STD-810 addresses a broader range of environmental conditions (humidity, altitude, rain, etc.) but does not specifically capture the unique low-frequency, high-displacement vibration of ship hulls. The Navy requires both standards for different purposes.

The U.S. Department of Defense’s ASSIST (Acquisition Streamlining and Standardization Information System) website is the official repository. A direct search for "MIL-STD-167-2A" will yield a downloadable PDF free of charge, but note that access may require a CAC card or registration for contractors. For a fee, these commercial resellers offer official,

Many professionals confuse the two versions. While both cover vibration, MIL-STD-167-1 focuses on the vibration generated by the equipment itself (emissions). In contrast, MIL-STD-167-2A governs how equipment withstands vibration coming from the ship’s environment (immunity). Specifically, Type I of MIL-STD-167-2A addresses the low-frequency, high-amplitude vibration typical of ship hulls and propulsion systems.

| Document | Relevance | |----------|------------| | MIL-STD-810H (Method 514.8) | Vibration for non-shipboard DoD equipment (not a substitute for 167-2A on ships). | | MIL-STD-901D | Shock testing (heavyweight / lightweight) – often required alongside 167. | | MIL-STD-461G | EMI/EMC – shipboard equipment also needs this. |