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Worldwide distributor of NSN parts and consumables located in the USA.

Tube To Boss Cross

Model / MPN: 640-1455 | NSN: 4730-01-259-5531
ITAR Registered seal

A fitting having four branches in the same plane whose axes form right angles. One or more of the connections have machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or are unthreaded and designed to accommodate a tube. The remaining connections are boss connections. The boss connections have internal or external machine threads and are designed to facilitate a gasket, preformed packing, washer, and the like to form a seal at the boss. It may have side inle (s) .

Product Details
NATO Stock Number
4730-01-259-5531
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a 2nd end
Thread Class
3a 1st end
Thread Class
3a 1st end bulkhead
Thread Class
3b 3rd end
Thread Class
3b 4th end
Connection Style
Flared (tube) 2nd end
Connection Style
Gasket seal (boss) 3rd end
Connection Style
Gasket seal (boss) 4th end
Connection Style
Plain (tube) 1st end
Leg Length
1.250 inches 3rd end
Leg Length
1.250 inches 4th end
Leg Length
1.756 inches 2nd end
Leg Length
2.092 inches 1st end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded external tube 2nd end
Connection Type
Threaded internal boss 3rd end
Connection Type
Threaded internal boss 4th end
Thready Qty Per Inch (tpi)
12 1st end
Thready Qty Per Inch (tpi)
12 1st end bulkhead
Thready Qty Per Inch (tpi)
12 2nd end
Thready Qty Per Inch (tpi)
12 3rd end
Thread Size
1.312 inches 1st end
Thread Size
1.312 inches 1st end bulkhead
Thread Size
1.312 inches 2nd end
Thread Size
0.438 inches 4th end
Thread Size
1.062 inches 3rd end
Seat Angle
37.0 degrees 2nd end
Outside Diameter Tube Accommodated
1.000 inches 1st end
Outside Diameter Tube Accommodated
1.000 inches 2nd end
Material
Steel comp 316
Material Specification
Qq-s-763 federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35, ty ii federal specification single treatment response
Thread Series Designator
Unj 1st end
Thread Series Designator
Unj 1st end bulkhead
Thread Series Designator
Unj 2nd end
Thread Series Designator
Unj 3rd end
Thread Series Designator
Unjf 4th end

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640-1455 Cross Reference
  • 640-1455-001