AIA

Glossary Term: AIA

Meaning: Aerospace Industries Association

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AIA is the body that authors the NAS standards. 

The following is from their website, http://www.aia-aerospace.org/

The Aerospace Industries Association, founded in 1919 only a few years after the birth of flight, is the premier trade association representing the nation's major aerospace and defense manufacturers.

Based in Arlington, Va., AIA is led by a Board of Governors that meets twice a year and consists of senior representatives (generally chief executive officers) of member companies, and an Executive Committee that meets more frequently. A hallmark of AIA is that it receives its policy guidance from the direct involvement of CEO-level officers of the country's major aerospace companies. The government frequently seeks advice from AIA on issues, and AIA provides a forum for government and industry representatives to exchange views and resolve problems on non-competitive matters related to the aerospace industry.

Today, more than 300 major aerospace and defense companies and their suppliers are members of the association, embodying every high-technology manufacturing segment of the U.S. aerospace and defense industry from commercial aviation and avionics, to manned and unmanned defense systems, to space technologies and satellite communications.

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Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
 1/16"
27
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 1/8"
27
28
 1/4"
18
19
 3/8"
18
19
 1/2"
14
14
 5/8"
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14

 
Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
 3/4"
14
14
1"
11 1/2
11
1 1/4"
11 1/2
11
1 1/2"
11 1/2
11
2"
11 1/2
11
2 1/2"
8
11

 
Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
3"
8
11
3 1/2"
8
11
4"
8
11
5"
8
11
6"
8
11
8"
8
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