- DEF STAN
- MIL-PRF
- MIL-PEC
- DOD
Specifications (often informally referred to as specs) refer to an explicit set of requirements to be satisfied by a material, design, product, or service. If a material, product, or service fails to meet one or more of the applicable specifications, it may be referred to as being out of specification.
A specification is a technical standard, a technical specification may be developed by various kinds of organisations, in both public and private sectors.
A defence standard is a document that establishes uniform engineering and technical requirements for military-unique or substantially modified commercial processes, procedures, practices, and methods.
There are different types of defence standards: interface standards, design criteria standards, manufacturing process standards, standard practices, and test method standards.
United States defence standards, often called a military standard, "MIL-STD" or" MIL-SPEC", are used to help achieve standardisation objectives by the U.S. Department of Defence, the UK uses "DEF-STAN" to set similar standards across its military.
The below acronyms are commonly found when working with aerospace specifications, and can often indicate the specification owner, or the type of product or process covered.
Joint Service Designations (JSD) are used in the British Ministry of Defence (MOD) to classify and identify products that are used across the Army, Navy and Air Force. These codes, beginning with a two or three letter identifier, followed by two or three unique numbers, can be broken down into different families of product:
Joint Service Designations are linked to a corresponding UK Defence Standard (DEF STAN), and more information can be found in the Ministry of Defence Standard 01-5.