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Tube To Boss Straight Adapter

Model / MPN: 49690-1 | NSN: 4730-00-444-1645
ITAR Registered seal

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

Product Details
NATO Stock Number
4730-00-444-1645
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a 2nd end
Thread Class
3a 1st end
End Application
F-16 aircraft
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flareless (tube) 1st end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded external tube 1st end
Thread Size
0.312 inches 1st end
Thread Size
0.438 inches 2nd end
Seat Angle
12.0 degrees 1st end
Outside Diameter Tube Accommodated
0.125 inches 1st end
Reduced Passage Inside Diameter
0.251 inches 2nd end
Nominallength
1.210 inches
Material
Steel comp 303
Material Specification
Qq-s-764, cond a federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-f-14072, e300, type 2 military specification single treatment response outside
Surface Treatment Specification
Mil-s-5002 military specification single treatment response inside
Thread Series Designator
Unf 2nd end
Thread Series Designator
Unjf 1st end
49690 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M315T7471 Adapter, Straight, Tu 40 EA 04/23/2015
SPE7M316T4517 Adapter, Straight, Tu 56 EA 06/16/2016
SPE4A519T987M Adapter, Straight, Tu 41 EA 11/25/2019
SPE4A520T159Q Adapter, Straight, Tu 65 EA 03/30/2020

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49690-1 Cross Reference
  • 49690-1